CN109103490A - A kind of high magnification iron phosphate polymer lithium battery - Google Patents

A kind of high magnification iron phosphate polymer lithium battery Download PDF

Info

Publication number
CN109103490A
CN109103490A CN201810939106.6A CN201810939106A CN109103490A CN 109103490 A CN109103490 A CN 109103490A CN 201810939106 A CN201810939106 A CN 201810939106A CN 109103490 A CN109103490 A CN 109103490A
Authority
CN
China
Prior art keywords
electrolyte
active material
iron phosphate
conductive agent
high magnification
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810939106.6A
Other languages
Chinese (zh)
Inventor
万伟超
符泽卫
谭春华
李季
孙正磊
李胜前
罗云凤
王家涛
罗开燕
刘恒宇
李青
闵照友
吴明娇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yunnan Tin Group (holdings) Co Ltd R & D Center
Original Assignee
Yunnan Tin Group (holdings) Co Ltd R & D Center
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yunnan Tin Group (holdings) Co Ltd R & D Center filed Critical Yunnan Tin Group (holdings) Co Ltd R & D Center
Priority to CN201810939106.6A priority Critical patent/CN109103490A/en
Publication of CN109103490A publication Critical patent/CN109103490A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
    • H01M4/624—Electric conductive fillers
    • H01M4/625—Carbon or graphite
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Secondary Cells (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

The invention discloses a kind of high magnification iron phosphate polymer lithium battery, the anode containing positive active material, the cathode containing negative electrode active material, diaphragm, the electrolyte of setting between a positive electrode and a negative electrode；Positive active material in anode is nano-grade lithium iron phosphate, negative electrode active material is high magnification artificial graphite in cathode, positive conductive agent be Super-P KS-6 carbon nanotube-graphene composite conductive agent, plus plate current-collecting body is oil system carbon-coated aluminum foils, and electrolyte constituent and mass percent are organic solvent 77-86%, electrolyte 12-15%, additive 2-8%；The compound additive that battery of the present invention uses can effectively improve lithium salts Ion transfer under low temperature, promote cryogenic property, solvent ethyl acetate plays the role of reducing low-temperature solvent freezing point, while playing additives for overcharge protection, and combined conductive agent can promote battery multiplying power；Experimental result shows, the big multiplying power discharging of battery low temperature of the present invention and cycle performance are good, has marketing application prospect.

Description

A kind of high magnification iron phosphate polymer lithium battery
Technical field
The present invention relates to technical field of lithium-ion battery more particularly to a kind of high magnification iron phosphate polymer lithium electricity Pond.
Background technique
Ferric phosphate lithium cell has extended cycle life, is highly-safe, is widely used in pure electric vehicle bus automobile, but its cryogenic property The characteristics of difference, material electronics poorly conductive, restricts its application, modified with the continuous promotion of hybrid-power electric vehicle fuel optimal index The excellent fast charge of high rate lithium iron phosphate cell, fast exoergic power and cryogenic property will be able to apply in hybrid vehicle to be facilitated Automobile fuel saving；Especially the winter of severe cold is the normal work for guaranteeing hybrid power system, must be requested that guarantees electrolyte low temperature Excellent conductivity, otherwise it is difficult to ensure that the normal operation of battery.
Summary of the invention
In view of the above shortcomings of the prior art, the purpose of the present invention is to provide a kind of high magnification and high temperature performance it is excellent Iron phosphate polymer lithium battery.
To achieve the goals above, technical scheme is as follows:
High magnification iron phosphate polymer lithium battery of the present invention includes the anode containing positive active material, contains negative electrode active material Cathode, setting diaphragm, electrolyte between a positive electrode and a negative electrode；Positive active material in anode is nano-grade lithium iron phosphate, In cathode negative electrode active material be high magnification artificial graphite, positive conductive agent be Super-P KS-6 carbon nanotube-graphene it is multiple Conductive agent is closed, plus plate current-collecting body is oil system carbon-coated aluminum foils, and electrolyte constituent and mass percent are organic solvent 77-86%, electricity Solve matter 12-15%, additive 2-8%.
Wherein organic solvent constituent and mass percent be ethylene carbonate 25%-30%, dimethyl carbonate 10%-20%, Methyl ethyl carbonate 25%-30%, diethyl carbonate 10%-20%, ethyl acetate 1%-15%.
Electrolyte is lithium hexafluoro phosphate；
The constituent additive amount of additive is as follows: the additive amount of LiDFOB is that the additive amount of 1-2%, LiFSI of electrolyte quality are The 0.2-1% of electrolyte quality, the 0.8%-5% that the additive amount of fluorinated ethylene carbonate (FEC) is electrolyte quality.
The Super-P KS-6 carbon nanotube-graphene composite conductive agent be Super-P, KS-6 and carbon nanotube-stone The mixture of black alkene combined conductive agent, the additive amount of Super-P are the 2-6% of positive dry powder quality, and the additive amount of KS-6 is anode The 1-4% of dry powder quality, carbon nanotube-graphene composite conductive agent additive amount are positive dry powder quality 0.2-2%.
1%≤C≤3%, D in the nano-grade lithium iron phosphate50≤3μm。
High magnification iron phosphate polymer lithium battery case of the present invention uses laminated aluminum film bag.
High magnification iron phosphate polymer lithium battery of the present invention is prepared using common process, such as by conventional positive and negative anodes Piece coating, lamination, baking, tab welding, aluminum plastic film encapsulation, baking, fluid injection, chemical conversion, high temperature ageing, is taken out at positive/negative plate film-making Vacuum trimming secondary sealing, partial volume, finished product monomer.
The present invention has the advantages that following significant compared with prior art:
LiDFOB additive of the present invention, which does anode film forming, which improves high temperature, can also improve low temperature, and LIFSI, FEC can be effectively improved Lithium salts Ion transfer under low temperature promotes cryogenic property, and solvent ethyl acetate, which plays, reduces low-temperature solvent freezing point, while playing Charge protection effect；Combined conductive agent can promote battery multiplying power；Experiments have shown that the big multiplying power of ferric phosphate lithium cell low temperature of the present invention is put Electricity and cycle performance are good；The battery can be applied to start stop system or hybrid electric car, have the application of preferable market Prospect.
Specific embodiment
Below with reference to embodiment, the present invention will be further described in detail, but the scope of protection of the invention reality without being limited thereto Apply example, in embodiment raw material unless otherwise specified be conventional commercial raw material or obtained according to a conventional method, side in embodiment Method is conventional method unless otherwise specified, and other component is conventional use of component unless otherwise specified in battery.
Embodiment 1: this high magnification iron phosphate polymer lithium battery, including the anode containing positive active material, containing negative Cathode, diaphragm, the electrolyte of setting between a positive electrode and a negative electrode of pole active material；Positive active material in anode is nanometer LiFePO4 (carbon coating gross activity content of material 2%, D50=3 μm), negative electrode active material is high magnification artificial graphite in cathode, just Pole conductive agent be Super-P KS-6 carbon nanotube-graphene composite conductive agent (it is Super-P, KS-6 and carbon nanotube- The mixture of graphene composite conductive agent, the additive amount that the additive amount of Super-P is 5%, KS-6 of positive dry powder quality is anode The 2% of dry powder quality, carbon nanotube-graphene composite conductive agent additive amount are positive dry powder quality 0.5%), plus plate current-collecting body For oil system carbon-coated aluminum foils, electrolyte constituent and mass percent are organic solvent 82.5%, lithium hexafluoro phosphate 12%, additive 5.5%；Wherein organic solvent constituent and mass percent are ethylene carbonate 28.5%, dimethyl carbonate 20%, methyl ethyl carbonate 25%, diethyl carbonate 20%, ethyl acetate 6.5%；The additive amount of the constituent LiDFOB of additive be electrolyte quality 1%, The additive amount of LiFSI is the 0.5% of electrolyte quality, the additive amount of fluorinated ethylene carbonate is the 4% of electrolyte quality；
Above-mentioned battery is produced in conventional fashion, and is melted into 25 DEG C of temperature, and Aging Temperature and time are 60 DEG C after chemical conversion, 72h.
Embodiment 2: this high magnification iron phosphate polymer lithium battery, including the anode containing positive active material, containing negative Cathode, diaphragm, the electrolyte of setting between a positive electrode and a negative electrode of pole active material；Positive active material in anode is nanometer LiFePO4 (carbon coating gross activity content of material 2.5%, D50=3 μm), negative electrode active material is high magnification artificial graphite in cathode, Positive conductive agent be Super-P KS-6 carbon nanotube-graphene composite conductive agent (be Super-P, KS-6 and carbon nanotube- The mixture of graphene composite conductive agent, the additive amount that the additive amount of Super-P is 4%, KS-6 of positive dry powder quality is anode The 2% of dry powder quality, carbon nanotube-graphene composite conductive agent additive amount are positive dry powder quality 1.5%), plus plate current-collecting body For oil system carbon-coated aluminum foils, electrolyte constituent and mass percent are organic solvent 79.5%, lithium hexafluoro phosphate 14%, additive 6.5%；Wherein organic solvent constituent and mass percent are ethylene carbonate 25%, dimethyl carbonate 20%, methyl ethyl carbonate 30%, diethyl carbonate 20%, ethyl acetate 15%；The additive amount of the constituent LiDFOB of additive be electrolyte quality 2%, The additive amount of LiFSI is the 1% of electrolyte quality, the additive amount of fluorinated ethylene carbonate is the 3.5% of electrolyte quality；
Above-mentioned battery is produced in conventional fashion, and is melted into 25 DEG C of temperature, and Aging Temperature and time are 60 DEG C after chemical conversion, 72h.
Embodiment 3: this high magnification iron phosphate polymer lithium battery, including the anode containing positive active material, containing negative Cathode, diaphragm, the electrolyte of setting between a positive electrode and a negative electrode of pole active material；Positive active material in anode is nanometer LiFePO4 (carbon coating gross activity content of material 1%, D50=2 μm), negative electrode active material is high magnification artificial graphite in cathode, just Pole conductive agent be Super-P KS-6 carbon nanotube-graphene composite conductive agent (be Super-P, KS-6 and carbon nanotube-stone The mixture of black alkene combined conductive agent, the additive amount that the additive amount of Super-P is 6%, KS-6 of positive dry powder quality are that anode is dry The 1% of silty amount, carbon nanotube-graphene composite conductive agent additive amount are positive dry powder quality 1%), plus plate current-collecting body is oil It is carbon-coated aluminum foils, electrolyte constituent and mass percent are organic solvent 77%, lithium hexafluoro phosphate 15%, additive 8%；Wherein Organic solvent constituent and mass percent are ethylene carbonate 30%, dimethyl carbonate 20%, methyl ethyl carbonate 30%, carbonic acid two Ethyl ester 18%, ethyl acetate 2%；The additive amount of the constituent LiODFB of additive is the additive amount of the 2% of electrolyte quality, LiFSI For the 1% of electrolyte quality, 5% that the additive amount of fluorinated ethylene carbonate is electrolyte quality；
Above-mentioned battery is produced in conventional fashion, 25 DEG C of temperature of chemical conversion, Aging Temperature and time after chemical conversion, and 60 DEG C, 72h.
Embodiment 4: this high magnification iron phosphate polymer lithium battery, including the anode containing positive active material, containing negative Cathode, diaphragm, the electrolyte of setting between a positive electrode and a negative electrode of pole active material；Positive active material in anode is nanometer LiFePO4 (carbon coating gross activity content of material 3%, D50=1.5 μm), negative electrode active material is high magnification artificial graphite in cathode, Positive conductive agent be Super-P KS-6 carbon nanotube-graphene composite conductive agent (be Super-P, KS-6 and carbon nanotube- The mixture of graphene composite conductive agent, the additive amount that the additive amount of Super-P is 3%, KS-6 of positive dry powder quality is anode The 3% of dry powder quality, carbon nanotube-graphene composite conductive agent additive amount are positive dry powder quality 2%), plus plate current-collecting body is Oil system carbon-coated aluminum foils, electrolyte constituent and mass percent are organic solvent 86%, lithium hexafluoro phosphate 12%, additive 2%；Its Middle organic solvent constituent and mass percent are ethylene carbonate 27%, dimethyl carbonate 20%, methyl ethyl carbonate 28%, carbonic acid Diethylester 17%, ethyl acetate 8%；The additive amount of the constituent LiODFB of additive is the addition of the 1% of electrolyte quality, LiFSI Amount be the 0.2% of electrolyte quality, 0.8% that the additive amount of fluorinated ethylene carbonate is electrolyte quality；
Above-mentioned battery is produced in conventional fashion, and is melted into 25 DEG C of temperature, and Aging Temperature and time are 60 DEG C after chemical conversion, 72h.
Comparative example 1: this high magnification iron phosphate polymer lithium battery, including the anode containing positive active material, containing negative Cathode, diaphragm, the electrolyte of setting between a positive electrode and a negative electrode of pole active material；Positive active material in anode is nanometer LiFePO4 (carbon coating gross activity content of material 2%, D50=3 μm), negative electrode active material is high magnification artificial graphite in cathode, just Pole conductive agent be Super-P KS-6 carbon nanotube-graphene composite conductive agent (be Super-P, KS-6 and carbon nanotube-stone The mixture of black alkene combined conductive agent, the additive amount that the additive amount of Super-P is 5%, KS-6 of positive dry powder quality are that anode is dry The 2% of silty amount, carbon nanotube-graphene composite conductive agent additive amount are positive dry powder quality 0.5%), plus plate current-collecting body is Normal aluminium foil, electrolyte constituent and mass percent are organic solvent 82.5%, lithium hexafluoro phosphate 12%, additive 5.5%；Its Middle organic solvent constituent and mass percent are ethylene carbonate 28.5%, dimethyl carbonate 20%, methyl ethyl carbonate 25%, carbon Diethyl phthalate 20%, ethyl acetate 6.5%；The additive amount of the constituent LiDFOB of additive is the 1% of electrolyte quality, LiFSI Additive amount is the 0.5% of electrolyte quality, the additive amount of fluorinated ethylene carbonate is the 4% of electrolyte quality；
Above-mentioned battery is produced in conventional fashion, 25 DEG C of temperature of chemical conversion, Aging Temperature and time after chemical conversion, and 60 DEG C, 72h.
Comparative example 2: this high magnification iron phosphate polymer lithium battery, including the anode containing positive active material, containing negative Cathode, diaphragm, the electrolyte of setting between a positive electrode and a negative electrode of pole active material；Positive active material in anode is nanometer LiFePO4 (carbon coating gross activity content of material 2.5%, D50=3 μm), negative electrode active material is high magnification artificial graphite in cathode, It is the additive amount of mixture Super-P of Super-P, KS-6 is positive dry powder quality that positive conductive agent, which is Super-P KS-6(, The additive amount of 4%, KS-6 be the 2% of positive dry powder quality), plus plate current-collecting body is oil system carbon-coated aluminum foils, electrolyte constituent and Mass percent is organic solvent 79.5%, lithium hexafluoro phosphate 14%, additive 6.5%；Wherein organic solvent constituent and quality hundred Divide than being ethylene carbonate 25%, dimethyl carbonate 20%, methyl ethyl carbonate 30%, diethyl carbonate 20%, ethyl acetate 15%；Add The additive amount for adding the constituent LiDFOB of agent is the 2% of electrolyte quality, the additive amount of LiFSI is the 1% of electrolyte quality, fluoro The additive amount of ethylene carbonate is the 3.5% of electrolyte quality；
Above-mentioned battery is produced in conventional fashion, and is melted into 25 DEG C of temperature, and Aging Temperature and time are 60 DEG C after chemical conversion, 72h.
Comparative example 3: this high magnification iron phosphate polymer lithium battery, including the anode containing positive active material, containing negative Cathode, diaphragm, the electrolyte of setting between a positive electrode and a negative electrode of pole active material；Positive active material in anode is nanometer LiFePO4 (carbon coating gross activity content of material 1%, D50=2 μm), negative electrode active material is high magnification artificial graphite in cathode, just Pole conductive agent be Super-P KS-6 carbon nanotube-graphene composite conductive agent (be Super-P, KS-6 and carbon nanotube-stone The mixture of black alkene combined conductive agent, the additive amount that the additive amount of Super-P is 6%, KS-6 of positive dry powder quality are that anode is dry The 1% of silty amount, carbon nanotube-graphene composite conductive agent additive amount are positive dry powder quality 1%), plus plate current-collecting body is oil It is carbon-coated aluminum foils, electrolyte constituent and mass percent are organic solvent 86%, lithium hexafluoro phosphate 14%；Wherein organic solvent group It is ethylene carbonate 30%, dimethyl carbonate 20%, methyl ethyl carbonate 30%, diethyl carbonate 18%, second at object and mass percent Acetoacetic ester 2%；
Above-mentioned battery is produced in conventional fashion, 25 DEG C of temperature of chemical conversion, Aging Temperature and time after chemical conversion, and 60 DEG C, 72h.
Comparative example 4: this high magnification iron phosphate polymer lithium battery, including the anode containing positive active material, containing negative Cathode, diaphragm, the electrolyte of setting between a positive electrode and a negative electrode of pole active material；Positive active material in anode is nanometer LiFePO4 (carbon coating gross activity content of material 3%, D50=1.5 μm), negative electrode active material is high magnification artificial graphite in cathode, Positive conductive agent be Super-P KS-6 carbon nanotube-graphene composite conductive agent (be Super-P, KS-6 and carbon nanotube- The mixture of graphene composite conductive agent, the additive amount that the additive amount of Super-P is 3%, KS-6 of positive dry powder quality is anode The 3% of dry powder quality, carbon nanotube-graphene composite conductive agent additive amount are positive dry powder quality 2%), plus plate current-collecting body is Oil system carbon-coated aluminum foils, electrolyte constituent and mass percent are organic solvent 86%, lithium hexafluoro phosphate 12%, additive 2%；Its Middle organic solvent constituent and mass percent are ethylene carbonate 27%, dimethyl carbonate 20%, methyl ethyl carbonate 28%, carbonic acid Diethylester 17%, ethyl acetate 8%；The additive amount of the constituent LiODFB of additive is the addition of the 1% of electrolyte quality, LiFSI Amount be the 0.2% of electrolyte quality, 0.8% that the additive amount of fluorinated ethylene carbonate is electrolyte quality；
Above-mentioned battery is produced in conventional fashion, 25 DEG C of temperature of chemical conversion, Aging Temperature and time after chemical conversion, and 40 DEG C, 72h.
1 plus plate current-collecting body of comparative example uses normal aluminium foil, with 1 experiment contrast of embodiment, verifies oil system carbon-coated aluminum foils to electricity The high rate performance in pond influences；Comparative example 2 is compareed with embodiment 2, verifies carbon nanotube-graphene composite conductive agent pair in conductive agent The promotion of battery high rate performance；Comparative example 3 is compareed with embodiment 3, verifying electrolysis additive to battery multiplying power, dynamic internal resistance, The influence of low temperature discharge；Comparative example 4 is compareed with embodiment 4, verifies high temperature Aging Temperature and digestion time to the shadow of battery performance It rings.
Iron phosphate polymer lithium battery obtained by above scheme carries out 30C multiplying power discharging test respectively, and battery DCR is tested, and -30 Degree cold start-up test etc., each test item takes three tests, and test result is shown in Table 1.
It can be with by test datas such as battery room temperature 30C discharge capacitance, dynamic internal resistance (DCR), low-temperature cool startings Find out and use oil system carbon-coated aluminum foils as anode collection physical efficiency enhancing active material and collector interface conductivity, hence it is evident that reduces battery Dynamic internal resistance promotes battery high rate performance, be added in conductive agent carbon nanotube graphene composite conductive agent can promote battery times Rate, electrolyte use ad hoc type solvent formula, add special additive, LiDFOB additive, which does anode film forming, improves high temperature Also it can improve low temperature, LIFSI, FEC can be effectively improved lithium salts Ion transfer under low temperature, promote cryogenic property, solvent acetic acid second Ester plays the role of reducing low-temperature solvent freezing point, while playing additives for overcharge protection.The big multiplying power of gained ferric phosphate lithium cell low temperature is put Electricity and cycle performance are good；The battery core can apply start stop system, hybrid electric car.
Above-described embodiment, only presently preferred embodiments of the present invention, is not intended to limit the invention practical range, therefore all with this The equivalent change or modification that feature described in invention claim and principle are done should all be included in scope of the invention as claimed Within.

Claims (6)

1. a kind of high magnification iron phosphate polymer lithium battery, including the anode containing positive active material, contains negative electrode active material Cathode, diaphragm, the electrolyte of setting between a positive electrode and a negative electrode of matter；It is characterized by: the positive active material in anode is Nano-grade lithium iron phosphate, negative electrode active material is high magnification artificial graphite in cathode, positive conductive agent be Super-P KS-6 carbon receive Mitron-graphene composite conductive agent, plus plate current-collecting body are oil system carbon-coated aluminum foils, and electrolyte constituent and mass percent are organic Solvent 77-86%, electrolyte 12-15%, additive 2-8%.
2. high magnification iron phosphate polymer lithium battery according to claim 1, it is characterised in that: organic solvent constituent and Mass percent is ethylene carbonate 25%-30%, dimethyl carbonate 10%-20%, methyl ethyl carbonate 25%-30%, diethyl carbonate 10%-20%, ethyl acetate 1%-15%.
3. high magnification iron phosphate polymer lithium battery according to claim 1, it is characterised in that: electrolyte is hexafluorophosphoric acid Lithium.
4. high magnification iron phosphate polymer lithium battery according to claim 1, which is characterized in that the constituent of additive adds Dosage is as follows: the additive amount that the additive amount of LiDFOB is 1-2%, LiFSI of electrolyte quality be electrolyte quality 0.2-1%, The additive amount of fluorinated ethylene carbonate is the 0.8%-5% of electrolyte quality.
5. high magnification iron phosphate polymer lithium battery according to claim 1, it is characterised in that: Super-P KS-6 carbon Nanotube-graphene alkene combined conductive agent is Super-P, KS-6 and carbon nanotube-graphene composite conductive agent mixture, The additive amount of Super-P is the 2-6% of positive dry powder quality, and the additive amount of KS-6 is the 1-4% of positive dry powder quality, carbon nanometer Pipe-graphene composite conductive agent additive amount is positive dry powder quality 0.2-2%.
6. high magnification iron phosphate polymer lithium battery according to claim 1, it is characterised in that: 1% in nano-grade lithium iron phosphate ≤ C≤3%, D50≤3μm。
CN201810939106.6A 2018-08-17 2018-08-17 A kind of high magnification iron phosphate polymer lithium battery Pending CN109103490A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810939106.6A CN109103490A (en) 2018-08-17 2018-08-17 A kind of high magnification iron phosphate polymer lithium battery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810939106.6A CN109103490A (en) 2018-08-17 2018-08-17 A kind of high magnification iron phosphate polymer lithium battery

Publications (1)

Publication Number Publication Date
CN109103490A true CN109103490A (en) 2018-12-28

Family

ID=64850119

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810939106.6A Pending CN109103490A (en) 2018-08-17 2018-08-17 A kind of high magnification iron phosphate polymer lithium battery

Country Status (1)

Country Link
CN (1) CN109103490A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110137577A (en) * 2019-06-04 2019-08-16 广东省飞驰新能源科技有限公司 It is a kind of can high current charge-discharge iron phosphate polymer lithium lithium battery
CN110660963A (en) * 2018-12-29 2020-01-07 宁德时代新能源科技股份有限公司 Electrode plate and electrochemical device
CN114243089A (en) * 2021-12-13 2022-03-25 上海瑞浦青创新能源有限公司 Lithium iron phosphate secondary battery
WO2024127150A1 (en) 2022-12-13 2024-06-20 Dyson Technology Limited Liquid electrolyte

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102394312A (en) * 2011-12-03 2012-03-28 山东精工电子科技有限公司 Low temperature improved lithium iron phosphate cell
CN106299291A (en) * 2016-09-09 2017-01-04 深圳市沃特玛电池有限公司 A kind of ultralow temperature lithium iron phosphate dynamic battery and preparation method thereof
CN107086287A (en) * 2017-03-27 2017-08-22 湖北猛狮新能源科技有限公司 A kind of preparation method of high multiplying power lithium ion battery
CN108306018A (en) * 2017-12-28 2018-07-20 骆驼集团武汉光谷研发中心有限公司 A kind of lithium iron phosphate dynamic battery improving low temperature charging performance

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102394312A (en) * 2011-12-03 2012-03-28 山东精工电子科技有限公司 Low temperature improved lithium iron phosphate cell
CN106299291A (en) * 2016-09-09 2017-01-04 深圳市沃特玛电池有限公司 A kind of ultralow temperature lithium iron phosphate dynamic battery and preparation method thereof
CN107086287A (en) * 2017-03-27 2017-08-22 湖北猛狮新能源科技有限公司 A kind of preparation method of high multiplying power lithium ion battery
CN108306018A (en) * 2017-12-28 2018-07-20 骆驼集团武汉光谷研发中心有限公司 A kind of lithium iron phosphate dynamic battery improving low temperature charging performance

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
中国汽车技术研究中心: "《节能与新能源汽车年鉴 2012》", 31 December 2012 *
吴其胜等: "《新能源材料》", 30 June 2017 *
杨铁军: "《产业专利分析报告 第44册》", 30 June 2016 *
陈玉华等: "《专利热点与审查实务研究》", 31 July 2017 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110660963A (en) * 2018-12-29 2020-01-07 宁德时代新能源科技股份有限公司 Electrode plate and electrochemical device
CN110660963B (en) * 2018-12-29 2021-04-27 宁德时代新能源科技股份有限公司 Electrode plate and electrochemical device
CN110137577A (en) * 2019-06-04 2019-08-16 广东省飞驰新能源科技有限公司 It is a kind of can high current charge-discharge iron phosphate polymer lithium lithium battery
CN110137577B (en) * 2019-06-04 2020-12-08 广东省飞驰新能源科技有限公司 Lithium iron phosphate polymer lithium battery capable of realizing large-current charging and discharging
CN114243089A (en) * 2021-12-13 2022-03-25 上海瑞浦青创新能源有限公司 Lithium iron phosphate secondary battery
CN114243089B (en) * 2021-12-13 2023-10-13 上海瑞浦青创新能源有限公司 Lithium iron phosphate secondary battery
WO2024127150A1 (en) 2022-12-13 2024-06-20 Dyson Technology Limited Liquid electrolyte

Similar Documents

Publication Publication Date Title
CN105591158B (en) A kind of tertiary cathode material lithium ion battery and its electrolyte
CN103400962B (en) A kind of spherical LiFePO 4/ (C+La 2/3-xli 3xtiO 3) composite anode material and preparation method thereof
CN103117414B (en) A kind of negative pole lithium titanate battery electrolyte, lithium ion battery and preparation method thereof
CN106340672A (en) Lithium ion battery non-aqueous electrolyte and lithium ion battery
CN105336943A (en) Lithium battery formed on basis of lithium nickel manganese oxide and lithium titanate and preparation method of lithium battery
CN103000939B (en) Lithium ion battery with graphene composite membrane as current collector and preparation method thereof
CN111883839B (en) High-voltage electrolyte and lithium ion battery based on same
CN104600362A (en) Power battery and lithium ion electrolyte thereof
CN109103490A (en) A kind of high magnification iron phosphate polymer lithium battery
CN108306018A (en) A kind of lithium iron phosphate dynamic battery improving low temperature charging performance
CN102610790B (en) Lithium rechargeable battery and its positive plate
CN105336504A (en) Hybrid capacitor battery
CN112018428A (en) Lithium ion battery and preparation method and application thereof
CN107293781A (en) Electrolyte and lithium ion battery
CN107681198A (en) A kind of lithium-ion battery electrolytes and its lithium ion battery
CN108110318A (en) A kind of nonaqueous electrolytic solution and lithium ion battery for lithium ion battery
CN106571485A (en) Low temperature manganese-iron-lithium phosphate power battery
CN108417894A (en) A kind of lithium secondary cell electrolyte and lithium secondary battery
CN108110215B (en) Positive plate, preparation method thereof and lithium ion battery
CN105552426A (en) Lithium-ion battery with overcharge protection function
CN115020806A (en) Electrolyte and lithium ion battery containing same
CN104466236A (en) Energy and power compatible lithium ion battery and preparation method thereof
CN108695487A (en) Positive plate and energy storage device
CN103000938B (en) The lithium ion battery and preparation method thereof being collector body with graphene crystal slice
CN116525952A (en) Nonaqueous electrolyte and sodium ion battery

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20181228

RJ01 Rejection of invention patent application after publication