CN102891314A - Nitrogen silicon carbide as cathode material - Google Patents
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- CN102891314A CN102891314A CN2011102038226A CN201110203822A CN102891314A CN 102891314 A CN102891314 A CN 102891314A CN 2011102038226 A CN2011102038226 A CN 2011102038226A CN 201110203822 A CN201110203822 A CN 201110203822A CN 102891314 A CN102891314 A CN 102891314A
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Abstract
The invention discloses a novel cathode material used in lithium ion batteries. The nitrogen silicon carbide is shown as formula Si1-x-yCxNy, wherein x and y are percentage values of atoms, x is larger than 0 and less than 1, and the sum of x and y is larger than 0 and less than 1; N is used as a doping element; elements Si, C and N are configured into single nanocrystalline; and when the concentration of N is more than 5%, and two-phase microstructures of silicon carbide and silicon nitride are formed. The cathode material has good circulation properties.
Description
Technical field
The present invention relates to application, preparation method and the lithium ion battery of a kind of electrode material in lithium rechargeable battery.
Background technology
Lithium secondary battery (Lithium Ion Battery is called for short LIB) is the storage battery after nickel-cadmium cell, Ni-MH battery.As a kind of novel chemical power source, it is outstanding that it has advantages of that operating voltage is high, specific energy is large, the discharge potential curve is steady, self discharge is little, have extended cycle life, cryogenic property is good, memoryless, pollution-free etc., can satisfy people to the double requirements of the needed battery lightweight of portable information system and environmental protection, be widely used in the Miniature digital systems such as mobile communication, notebook computer, video camera, also can provide electrical source of power for motor vehicle.
Lithium ion battery is among the development, and except updating positive electrode, the high-performance negative material that preparation reversibly embeds the removal lithium embedded ion is important.Lithium ion battery negative material generally should be when discharging and recharging in the highly reversible insertion reaction Gibbs free little, lithium ion diffusion coefficient in the solid of negative pole is high, conductivity is high, does not react in the chemical environments such as electrolyte, macroscopic property is stable.The development trend of negative material is as target take raising capacity and cyclical stability.
Various metals, metalloid and alloy thereof have high capacity as electrode material, but because its volumetric expansion in lithium ion battery removal lithium embedded process changes greatly, make the electrochemical active material structural deterioration, and crystal is cracked, and cycle period reduces.These materials can not form scale manufacturing.At present, used carbon and graphite material theoretical capacity low (372mAh/g), low (the Li vs.Li of current potential
+＜0.1V), negative material is necessary to improve performance.
Summary of the invention
The invention provides and be suitable for the negative material that lithium secondary battery uses, the fire sand powder is such as chemical formula such as Si
1-x-yC
xN
yShown in, x wherein, y is the atomic percent value, 0＜x＜1,0＜y＜1,0＜x+y＜1; In (a) x＞0, y＜0.1 o'clock belongs to nitrogenous silicon-carbon, is a kind of solid phase; (b) x＞0, y＞0.1st, nitrogen is in silicon-carbon that covalent bond substitutes in the crystal silicon or carbon atom position forms local two-phase micro-structural.NIIHARA IZAK1K K and KAWAKAMI N. are published in J Mater Sci Lett, 1990,10 (2): fire sand material preparation and thermodynamic property studied earlier in the article of 112-116, thereafter researcher also is conceived to mechanical property, the research of its slotting lithium performance of rare concern.This negative material is characterised in that nitrogen content can be controlled and change gradually in silicon-carbon.At least the one dimension crystallization direction of fire sand crystalline size is less than 100nm, i.e. the nanometer crystalline phase.Nanometer crystalline phase fire sand is the phase of crystalline state, and this shows that mutually the crystallization atomic arrangement has the long-range order rule, and its x ray spectra and Raman spectrum all have sharp-pointed, clear and definite boundary peak value.And " amorphous phase ", its x ray and Raman spectrogram then show without sharp-pointed and clear and definite boundary peak value.
In certain embodiments, can select the x value, make x 〉=0.4, and can select the y value, make y＞0, y 〉=0.01, y 〉=0.06, y 〉=0.10, or y 〉=0.15.For example, in certain embodiments, x 〉=〉=0.6, x 〉=0.7, in addition larger, y＞0 or y0.06.When y 〉=0.06, N foreign atom in silicon-carbon develops and is the covalent crystal attitude, silicon-carbon (SiC) mutually in the new phase silicon nitride (Si of formation
3N
4).
Fire sand can be used for lithium secondary battery anode, described lithium secondary battery also comprises, positive pole and electrolyte.Negative pole is preferably the complex of fire sand and bonding agent (any known bonding agent is such as polyimides) and conductive agent (Graphene, acetylene black) combination.Electrolyte is any known electrolyte, for example, and hexafluoro phosphorus lithium+vinylene carbonate+dimethyl carbonate+methyl ethyl carbonate fat.
This kind material is incorporated in the lithium secondary battery, and it demonstrates long cycle period and good enclosed pasture efficient.This material and use the battery of this negative material easily to make.
In following accompanying drawing and the description, one or more embodiments of the detail of the present invention have been provided.From describe and and claim can see other features, objects and advantages of the present invention.
Embodiment
Fire sand dusty material described in the invention is specially adapted to the negative pole of lithium secondary battery.This material is characterised in that, is used for the fire sand dusty material of lithium secondary battery, suc as formula Si
1-x-yC
xN
yShown in, x wherein, y is the atomic percent value, 0＜x＜1,0＜y＜1,0＜x+y＜1.In x 〉=0.3, y＜0.06 o'clock, it is single-phase that nitrogen doping and silicon and carbon form fire sand; When x 〉=0.3, y 〉=0.06 nitrogen-atoms o'clock occurs and replace carbon or silicon atom (N replaces the less carbon atom of radius generally speaking) in crystal, forms and the covalently bound silicon nitride cenotype of silicon-carbon micro-structural.This particle scale is in the nanoscale scope.The crystalline state silicon-carbon is exotic material, generates temperature higher (greater than 1650 ℃).Preferably, obtain fire sand by the high temperature sintering technology.Pass into nitrogen when raw materials for sintering, the control nitrogen flow can be controlled the content of nitrogen in silicon-carbon, is determining the appearance of silicon nitride phase in the silicon-carbon crystal.
The present invention adopts the high temperature sintering technology to obtain fire sand.Used high temperature sintering furnace is optional multiple, such as other sintering furnace in VSF-75 type vacuum high-temperature sintering stove, the Shanghai HZA2000-140 of Huachen vacuum technique company vacuum carbon tube furnace or this area of Shenyang vacuum technique research institute, all is optional equipment.
This fire sand powder is suitable for the negative pole of lithium secondary battery.Negative pole is preferably the composite structure in conjunction with bonding agent and conductive agent.The bonding agent example that is fit to comprises polyimides and polyvinylidene fluoride.The example of suitable conductive agent comprises acetylene black, or carbon black, or Graphene.
Be the preparation battery, need positive pole, negative pole and electrolyte are combined into an individual system.Suitable anodal or its composition example comprises LiCoO
2, LiMn
2O
4, LiFePO
4, or other nickel oxidate for lithium.Electrolytical form is liquid, solid or gel.The example of solid electrolyte comprises polymer dielectric, and suitable example comprises, poly(ethylene oxide), fluoropolymer and copolymer (Kynoar) and composition thereof.The example of liquid electrolyte comprises fluoroethylene carbonate, methyl carbonate, ethyl carbonate, polypropylene carbonate fat.Provide lithium electrolyte salt to electrolyte, the example of suitable electrolytic salt comprises LiPF6, LiBF4, ethanedioic acid lithium borate, LiClO4 and LiAsF6 etc.
Nano oxidized inferior silicon and nano-sized carbon whisker are self-control.Frank T.Ferguson and Joseph A.Nuth are published in J.Chem.Eng.Data, and 2008,53 (12), the article of pp 2824-2832 and Literature thereof have been described the preparation method of the inferior silicon of oxidation.Nano oxidized inferior silicon preparation method probably is, insert the silica boat at quartz ampoule, silica powder vacuumizes, and is heated to 1250 ℃, pass into hydrogen, silica and hydrogen generation reduction reaction generate the inferior silicon gas of oxidation, take outlet condensation place to air-flow, condensing forms the inferior silicon powder of oxidation, and its particle diameter distribution is about 40～80nm.The people such as Ishioka M and Okada T are published in Carbon, 1992,30 (7): the preparation method of vapor phase method growing nano carbon fiber described in 975 article.Its method is roughly the metallic nickel beaded catalyst is put in quartz ampoule inside, passes into the methane that hydrogen is carrier gas under 1100 ℃, is decomposed into carbon nano-fiber.The carbon nano-fiber diameter of this method preparation is at 100-300nm, and draw ratio reaches more than 20.
Use the Britain RENISHAW RM-1000 type Laser-Raman microspectroscopy that is equipped with argon ion laser (Ar+, 514.5nm, 20mW) to collect raman scattering spectrum, see accompanying drawing 1.Use has been equipped with the Rigaku x x ray diffractometer x (D-MAX 2200 VPC) of copper target x ray tube and diffracted beam monochromator and has collected x x ray diffraction collection of illustrative plates, sees Table 1.Obtained mutually with the x ray diffraction data by Raman spectrum, be based on the resulting feature peak shape of each fire sand sample.Bright and sharp, definite boundary that these peak shapes have.From the Raman scattering peak and the x ray diffraction peaks analyze, sintered product only has a kind of phase of fire sand, is the cubic lattice type, in conjunction with the analysis of diffraction peak width, calculates with the Schere formula, the crystallite dimension of phase is 43nm.Think the nanometer crystalline phase when calculating crystallite dimension less than 100nm.The demonstration of X ray diffracting spectrum data, the fire sand crystal structure belongs to cubic lattice, i.e. beta structure.
The Raman spectrum of Fig. 1 fire sand sample 1 shows single phase character.
Shown in Figure 2 is according to the sample 1,4 of the introducing fire sand electrode of capacity vs. cycle period, 6 and 8 example electrochemical half-cell performance.
Shown in Figure 3 is the ESEM microphoto of fire sand powder, shows shown in the figure that fire sand is single solid-phase crystallization phase.
For the electrode for the preparation of the electrochemical cell circulation, every kind of powder of suspension 1.9g in the METHYLPYRROLIDONE (NMP) of 2g.Then be added to the suspended substance of this powder by 10% solid suspension near the carbon black of the NMP of 1: 1 weight and the 4.5g in the polyvinylidene fluoride.The suspended substance of mixed at high speed gained on mechanical agitator, shear time 2 minutes then is coated on the Copper Foil that thickness is 230um, so that the coating of active material fire sand 80%, polyvinylidene fluoride 8% and carbon black 12% to be provided.180 ℃ were descended dry this coating 3 hours in a vacuum, to form electrode.Metal lithium sheet in conjunction with thickness 400um is to electrode, and structure CR2032 type is buckled battery, and double-deck CELLGUARD 2400 is as dividing plate, the 1M LiPF of 1: 2 mixture of carbon fat ethene and diethyl carbonate
6As electrolyte.
For first circulation, the 0.2A/cm between 2.1V and 0.05V
2Constant current under, use golden promise electronics CT2001A battery test system this battery that circulates, and for all additional cycles, the 0.4A/cm between 2.1V and 0.05V
2Constant current under this battery of circulation, table 3 has demonstrated the circulation result with 60 cycles of the half-cell of the electrode of fire sand active material preparation.Data show in the table, and nitrogen concentration surpasses 5% in the fire sand crystal, and when cycle period reached 60 times, the volume lowering amplitude was large.Show that possible reason is that nitrogen concentration is excessive, form carborundum and silicon nitride solid solution two-phase solid, worsened the robustness of crystal structure, so that the chemical property variation of active material.
Embodiment 2
Take by weighing the nano oxidized inferior Si powder of 7.14g and 9.25g carbon fiber (all be 99.9% or higher purity), other takes by weighing the nickel chloride powder of 1mg, after the mixing, insert in the graphite alms bowl body, use the cap seal mouth, put into VSF-75 type vacuum high-temperature sintering stove, in inert gas+nitrogen mixture atmosphere, heat this mixture, heat up with 25 ℃/minute speed, until 1700 ℃, naturally cool to room temperature after keeping 1 hour heating time, open the alms bowl lid, product is fire sand, its weight 5.17g.Regulate in this course nitrogen flow, the control nitrogen-atoms enters the content of silicon-carbon crystal growth, enters the silicon in the replacement lattice or carbon atom in the silicon-carbon crystal as doped chemical, or enters the space, and it is large that the nano-silicone wire/carbon crystal cell parameter of generation becomes.Generation has the Si of compound form
55C
42N
3The fire sand powder, fire sand is draw ratio greater than 1 nano whisker, all amounts are all used the atomic percentage value in its chemical formula.Adopt in the same manner as in Example 1 x x ray diffraction collection of illustrative plates and Raman spectrum as the identification of means of crystal structure and crystalline size.
Process made powder, for the preparation of electrode as described in Example 1.In the final composition that applies, comprise 80% active material, 12% activated carbon and 8% bonding agent (Kynoar).Shown in Figure 2 is according to the sample 1,4 of the introducing fire sand electrode of capacity vs. cycle period, 6 and 8 example electrochemical half-cell performance.
This powder sample is made into coated electrode, introduces in the electrochemical cell, and circulation, as described in the powder sample in the example 1.For the first circulation, by the constant current (0.2A/cm between 2.1V and the 0.05V
2) charging and discharging, carry out this circulation, for constant current charge and the discharge between all additional cycles 2.1V and the 0.06V, carry out this circulation.This battery have 2750mAh/g first discharge capacity with have different discharge capacity curves, show that this electroactive substance is exactly the performance of fire sand.This half-cell has shown good cycle characteristics.
Embodiment 3
Example 8-10 sample by enumerating in the general step table 2 identical with example 1-7 has following difference.Use commercially available nano oxidized inferior silicon (the triumphant peace Coating Materials in Suzhou Co., Ltd), commercially available carbon nano-fiber (300-600nm, draw ratio is greater than 30, ICHEL INC, Japan) sintering prepares fire sand, the cut-off temperature is 1750 ℃, keeps 2 hours reaction time.
Each example 1-10 sample of enumerating in table 1 is made electrode.And the sign that in the electrochemical cell with lithium metal pair electrode, circulates.Prepare according to the following steps electrode.In 45 milliliters of rustless steel containers, use a magnetic stir bar, amount is mixed for the poly-inclined to one side tetrafluoroethene (being dissolved in the solution of 20 percentage by weights in the METHYLPYRROLIDONE) of the fire sand powder of 2.9g, 0.22g conductive carbon (Shenzhen Wei Feng scientific ﹠ technical corporation) and 1.2g.Place on the KX85-2 type temperature constant magnetic stirring machine (China), mix 3 hours time with 4 grades of mixing speeds.Then, using coating die head that the mixing material that obtains is applied to thickness is on 13 microns the Copper Foil.With coating under 180 ℃ temperature dry 3 hours, be used for constructing 2016 type button cells.Described battery comprises the lithium sheet metal conduct of 380 micron thick to electrode, two-layer plain film polypropylene diaphragm (Cellguard2400, the U.S.) and electrolyte (mixture is used before using this mixture is used 3A type molecular sieve drying 12 hours).The component representation of 2016 type button cells is published in J.Electrochem.Soc. at A.M.Wilson and J.R.Dahn, in the article of 142,326-332 (1995).
Use CT2001A (Wuhan Jin Nuo company) battery test system that the electrochemical cell by example 1-10 sample preparation is circulated between 0.08V to 0.01V.Discharge and recharge with current constant mode and carry out, electric current is 0.3mA/cm
2The charge efficiency that records and enclosed pasture efficiency value are recorded in the table 2.
Embodiment 4
The above-mentioned electrode that forms with the fire sand powder of the preparation of method described in the embodiment 1,2 and 3, in first circulation and additional cycles thereafter, when utilizing the energy storage of lithium ion battery principle, can consume lithiums a large amount of in positive electrode and the electrolyte and form passivating film (SEI film), the fire sand lithium embeds and takes off the amount reduction of embedding as a result, irreversible capacity increases, and capacitance loss makes us and can't stand.
For taking full advantage of the purpose of fire sand embedding lithium.A kind of method is to adopt the mode that is pre-formed the SEI film to reduce the consumption of the lithium metal in electrolyte and the positive pole: fire sand is made electrode slice, do electrode with lithium metal, 1MLiPF6/PC or 1MLiClO4/PC are electrolyte, form the SEI film on the negative material surface in advance by charging process, be assembled into again lithium ion battery.This processing can improve embedding lithium density, effectively reduces the initial charge capacitance loss, can make the voltage of electrolyte Nai Genggao simultaneously.Its concrete operations mode is, at first the lithium sheet is as to the electrode negative pole, and fire sand and conductive agent and binding agent are made electrode slice, take 1M LiClO4/PC or 1M LiPF6 as electrolyte, is assembled into battery, charges.Then measure its charging performance.Form the SEI film by this charging process on the fire sand surface, reduce irreversible capacity loss.Fire sand negative plate for charged is configured to iron phosphate lithium positive pole and electrolyte, is assembled into lithium ion battery, realizes jumbo discharging and recharging.Another kind method is that Coated with Organic Matter is carried out on the fire sand surface, make it become ion conductor, the insulator of electronics, as coat poly-lithium acetate ethene, Lithium polyacrylate etc., reduce the thickness of the SEI film of fire sand surface formation, thereby in the minimizing positive pole and the consumption of lithium metal in the electrolyte, reduce irreversible capacity loss.The third method is at fire sand surface deposition one deck LiOH or Li2CO3, and this can reduce the fire sand irreversible capacity loss, improve enclosed pasture efficient.
Embodiment 5
According to document [Zhong Q, Bonakdarpour A, Zhang M, et al.Synthesis and electro-chemistry of Li Ni
xMn
2-xO
4.J Eleetroehem SOC, 1997,144 (1): 205--213. and Kawai H, Nagata M, Tukamoto H, et al.A novel cathode Li2CoMn308for lithium ion batteries operating over 5 volts.J Mater Chem, 1998,8 (4): 837-839] described method prepares 5V positive electrode LiNi
0.5-0.5yCr
yMn
1.5-0.5yO
4, wherein, y=0.00,0.05,0.10,0.15, specific capacity is 126.2mAh/g.Do not carry out Cr and mix, through behind the preparation technology, known by chemical analysis, product is LiNi
5Mn
15O
4Anode electrode for for the preparation of the electrochemical cell circulation takes by weighing handled high voltage 5V positive electrode LiNi in the required ratio of electrochemical cell both positive and negative polarity
5Mn
15O
4Material 1.5g, every kind of powder of suspension 1.9g in the METHYLPYRROLIDONE (NMP) of 2g.Then be added to the suspended substance of this powder by 10% solid suspension near the carbon black of the NMP of 1: 1 weight and the 4.5g in the polyvinylidene fluoride.With positive active material LiNi
5Mn
15O
4, acetylene black and polyvinylidene fluoride mix with 80: 12: 8 mass ratio, with absolute ethyl alcohol as dispersant, high speed shear effect 45 minutes.Then, with hair-dryer dry up, glass bar picks up to press and makes it to become film.Cut out the disk that diameter is 10mm with the circle punching from film, after the drying, with powder compressing machine it is pressed on the aluminium foil of handling well as positive plate a little.With 120 ℃ of lower vacuumize 12h of ready-made pole piece, to form the anode electrode sheet.Take the electrode slice of fire sand active material preparation as negative pole, electrolyte is 1mol/L HPF6/ (EC+DMC), and barrier film is the Celgard2400 film, dresses up 2032 type button cells in relative humidity in less than 0.3% glove box.The electrode slice of the fire sand powdery structure of processing among the above embodiment 1-4 and 5V positive electrode LiNiMnO
4The anode electrode sheet combination that consists of, with step among the embodiment 1 just as, assembling forms lithium ion battery, the work cut-ff voltage is 3.5V-5V.Discharge and recharge experiment and carry out at the battery test system CT2001A that Jin Nuo electronics corporation in Wuhan produces, adopt specific capacity and the cycle performance of constant current charge-discharge method test material.Battery circulates with the 0.05C rate charge-discharge first and changes in a week, then with different multiplying battery is carried out the constant current charge-discharge test respectively.
Circulation volume can reach 2380mAh/g first, enclosed pasture efficient 99.9%, and the charge/discharge cycle characteristics of additional cycles demonstrates the lithium ion battery characteristic.
Table 1 fire sand x x ray diffraction collection of illustrative plates peak position Value Data
The preparation of table 2 fire sand powder
When preparing fire sand take the inferior silicon of homemade oxidation and carbon nano-fiber as raw material, in the situation that keep other general condition identical, add the copper nickel-metal catalyst, then produce lattice structure and change.It is many types of that the fire sand hexagonal lattice appears.Fire sand according to this method growth is example 11-15 sample, and its x x ray diffraction collection of illustrative plates data are as shown in table 2.
Regulate nitrogen flow and can control the doping content of nitrogen.The cycle period of the example 1-10 sample shown in the table 3 shows, when nitrogen doped concentration concentration reaches more than 5%, its capacity will reduce.
Table 3 electrochemistry example
| Example number | Capacity mAh/g after 60 circulations | Enclosed pasture efficient % |
| 1 | 1280 | 99.99 |
| 2 | 679.7 | 99.75 |
| 3 | 986.7 | 100.04 |
| 4 | 2450.3 | 100.50 |
| 5 | 509 | 99.96 |
| 6 | 1968.6 | 99.98 |
| 7 | 297.3 | 99.67 |
| 8 | 1899.1 | 100.34 |
| 9 | 879.2 | 99.93 |
| 10 | 1902.4 | 99.96 |
A plurality of embodiment of the present invention has been described.In the situation that without departing from the spirit and scope of the present invention, can make various modifications.Therefore, other embodiment is in following claim scope.
Claims (11)
1. lithium ion battery negative material, fire sand, chemical formula such as Si
1-x-yC
xN
yX wherein, y is the atomic percent value, and 0＜x＜1,0＜y＜1,0＜x+y＜1.
2. lithium ion battery negative material according to claim 1 is characterized in that the fire sand powder is the crystal on a kind of crystallography meaning, can have two kinds of phases or be called solid solution phase.
3. lithium ion battery negative material according to claim 1, it is characterized in that fire sand at one dimension direction crystalline size at least less than 100nm.
4. lithium ion battery negative material according to claim 1 is characterized in that N (nitrogen) atom that mixes is to replace carbon (C) atom less in the lattice or in lattice voids, do not produce new solid phase.
5. lithium ion battery negative material according to claim 1 is characterized in that N (nitrogen) the atom y that mixes＞0.1 o'clock producing SiC and Si
3N
4The solids mixing phase of covalency.
6. lithium ion battery negative material according to claim 1 is characterized in that x＞0.4, while y＞0.1, x+y＜1.
7. lithium ion battery negative material according to claim 1 is characterized in that x＞0.6, while y＞0.1, x+y＜1.
8. lithium ion battery negative material according to claim 1 is characterized in that described electrode material and conductive agent and binding agent are mixed with after the electrode slice, charges first, through preliminary treatment, forms the SEI film, is assembled into lithium ion battery again.
According to claim 1 with 5 described lithium ion battery negative materials, it is characterized in that described electrode material makes before the electrode slice, a kind of in fire sand and lithium hydroxide, the lithium carbonate or be combined to form composite negative pole material.
10. according to electrode material claimed in claim 1, it is characterized in that described electrode material makes before the electrode slice, fire sand is processed through the organic substance parcel.
11. a lithium ion battery is by negative pole, anodal and electrolyte and formation, and wherein, negative material is by fire sand, Si
1-x-yC
xN
y, chemical formula such as Si
1-x-yC
xN
y, x, y are atomic percents, and composition consists of, and positive active material is by LiNi
0.5-0.5yCr
yMn
1.5-0.5yO
4Consist of, wherein, y=0.00,0.05,0.10,0.15, the optional multiple known kind of electrolyte.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103137973A (en) * | 2013-03-08 | 2013-06-05 | 张泽森 | Carbonization base electrode material |
| CN103500814A (en) * | 2013-09-17 | 2014-01-08 | 天津师范大学 | Preparation method and application of porous SiCN-HF lithium ion battery negative electrode material |
| WO2015014121A1 (en) * | 2013-07-29 | 2015-02-05 | 华为技术有限公司 | Negative active material of lithium-ion secondary battery and preparation method therefor, negative plate of lithium-ion secondary battery, and lithium-ion secondary battery |
| CN104347858A (en) * | 2013-07-29 | 2015-02-11 | 华为技术有限公司 | Lithium ion secondary cell cathode active material and preparation method thereof, lithium ion secondary cell cathode pole piece and lithium ion secondary cell |
| CN107565096A (en) * | 2017-09-26 | 2018-01-09 | 湖南格兰博智能科技有限责任公司 | A kind of anode plate for lithium ionic cell and its processing method and a kind of lithium ion battery |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101171710A (en) * | 2005-05-16 | 2008-04-30 | 三菱化学株式会社 | Rechargeable battery with nonaqueous electrolyte, its negative electrode, and its material |
-
2011
- 2011-07-19 CN CN2011102038226A patent/CN102891314A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101171710A (en) * | 2005-05-16 | 2008-04-30 | 三菱化学株式会社 | Rechargeable battery with nonaqueous electrolyte, its negative electrode, and its material |
Non-Patent Citations (1)
| Title |
|---|
| MAGDALENA GRACZYK-ZAJAC ET AL.: "Electrochemical studies of carbon-rich polymer-derived SiCN ceramics as anode materials for lithium-ion batteries", 《JOURNAL OF THE EUROPEAN CERAMIC SOCIETY》, vol. 30, no. 15, 31 July 2010 (2010-07-31), pages 3235 - 3243, XP027231397 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103137973A (en) * | 2013-03-08 | 2013-06-05 | 张泽森 | Carbonization base electrode material |
| WO2015014121A1 (en) * | 2013-07-29 | 2015-02-05 | 华为技术有限公司 | Negative active material of lithium-ion secondary battery and preparation method therefor, negative plate of lithium-ion secondary battery, and lithium-ion secondary battery |
| CN104347858A (en) * | 2013-07-29 | 2015-02-11 | 华为技术有限公司 | Lithium ion secondary cell cathode active material and preparation method thereof, lithium ion secondary cell cathode pole piece and lithium ion secondary cell |
| CN104347858B (en) * | 2013-07-29 | 2016-12-28 | 华为技术有限公司 | Negative electrode of lithium ionic secondary battery and preparation method thereof, cathode pole piece of lithium ion secondary battery and lithium rechargeable battery |
| US10454094B2 (en) | 2013-07-29 | 2019-10-22 | Huawei Technologies Co., Ltd. | Cathode active material for lithium-ion secondary battery and preparation method thereof, cathode pole piece for lithium-ion secondary battery, and lithium-ion secondary battery |
| CN103500814A (en) * | 2013-09-17 | 2014-01-08 | 天津师范大学 | Preparation method and application of porous SiCN-HF lithium ion battery negative electrode material |
| CN103500814B (en) * | 2013-09-17 | 2015-08-26 | 天津师范大学 | The preparation method of porous SiC N-HF lithium ion battery negative material and application |
| CN107565096A (en) * | 2017-09-26 | 2018-01-09 | 湖南格兰博智能科技有限责任公司 | A kind of anode plate for lithium ionic cell and its processing method and a kind of lithium ion battery |
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Application publication date: 20130123 |