CN106450185B - MoS2Nanoneedle/carbon nanotube composite negative pole material preparation method - Google Patents

MoS2Nanoneedle/carbon nanotube composite negative pole material preparation method Download PDF

Info

Publication number
CN106450185B
CN106450185B CN201610875853.9A CN201610875853A CN106450185B CN 106450185 B CN106450185 B CN 106450185B CN 201610875853 A CN201610875853 A CN 201610875853A CN 106450185 B CN106450185 B CN 106450185B
Authority
CN
China
Prior art keywords
carbon nanotube
mos
nanoneedle
negative pole
composite negative
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.)
Active
Application number
CN201610875853.9A
Other languages
Chinese (zh)
Other versions
CN106450185A (en
Inventor
赵海雷
张子佳
杜雪飞
李兆麟
赵丽娜
滕勇强
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.)
University of Science and Technology Beijing USTB
Original Assignee
University of Science and Technology Beijing USTB
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 University of Science and Technology Beijing USTB filed Critical University of Science and Technology Beijing USTB
Priority to CN201610875853.9A priority Critical patent/CN106450185B/en
Publication of CN106450185A publication Critical patent/CN106450185A/en
Application granted granted Critical
Publication of CN106450185B publication Critical patent/CN106450185B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/362—Composites
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
    • 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
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • 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
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
    • H01M4/581—Chalcogenides or intercalation compounds thereof
    • H01M4/5815—Sulfides
    • 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
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
    • H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
    • 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

Abstract

The invention discloses a kind of MoS2Nanoneedle is epitaxially grown in the preparation method of carbon nanotube composite negative pole material.By using chemical vapour deposition technique, MoS is prepared2Nanoneedle/carbon nano tube compound material.MoS2It is combined with carbon nanotube in interface coherence, improves the bond strength of the two, guarantee that active material configuration is stablized in charge and discharge process, and accelerate the transmission of electronics in electrochemical reaction process；MoS2Nanoneedle prevents nano active substance from reuniting in charge and discharge process in being uniformly distributed for carbon nanotube；Flexible carrier carbon nanotube can alleviate volume change of the active material in charge and discharge process, ensure electrode structure stability.The advantage of the invention is that the preparation process of composite material is simple, yield is big, is suitble to large-scale industrial production.The MoS of the method preparation2Nanoneedle/carbon nano tube compound material has stable cycle performance and excellent high rate performance, is a kind of ideal lithium ion battery negative material, can be widely applied to the fields such as portable electronic device, electric car and aerospace.

Description

MoS2Nanoneedle/carbon nanotube composite negative pole material preparation method
Technical field
The invention belongs to new energy materials and electrochemical field, and in particular to a kind of MoS2Nanoneedle/carbon nanotube is novel Can charging-discharging lithium ion battery composite negative pole material preparation method.
Technical background
Lithium ion battery have many advantages, such as energy density it is high, it is environmental-friendly, have extended cycle life, in the convenient electricity such as mobile communication It is widely applied in sub- equipment.With its high performance advantage, the main development for becoming power battery becomes lithium ion battery Gesture has become hot spot and China's new-energy automobile industrialization of international competition using lithium ion battery as the electric car of power Main way.Graphite material is now widely used lithium ion battery negative material, has the advantages that good cycle, but Its specific capacity is lower, and (theoretical capacity is 372mAh g-1).Lithium ion battery of new generation, especially power lithium-ion battery is to electrode Material specific capacity and in terms of put forward higher requirements.Therefore, research and development have specific capacity high and cyclicity The excellent novel anode material of energy is of great significance for lithium ion battery of new generation, especially power lithium-ion battery technology With specific application value.
MoS2Material, theoretical capacity are up to 667mAh g-1, resourceful, low toxicity is low in cost, receives in recent years The extensive concern of researchers.But MoS2Along with biggish volume change during removal lithium embedded, so that active particle is sent out Fecula, active material falls off from collection liquid surface and loses electrical contact, so as to cause capacity sharp-decay.In addition, MoS2Material The electronic conductance of material is poor, causes electrochemical reaction dynamics slower, and electrode ladder high rate performance is not fully up to expectations.Currently, changing Kind MoS2The method of chemical property specifically includes that reduction particle size, shortens lithium ion diffusion path, accelerates electrochemical reaction Dynamics；Special appearance is synthesized, the volume change during removal lithium embedded is buffered.Another kind is effectively improved MoS2Chemical property Method is to be compounded to form compound with compliant conductive matrix, the electronic conductance of composite material not only can be improved, but also can buffer and fill Volume change in discharge process.
Representative MoS in document2The research work of base electrode material includes:
(1) Tsinghua University Wang Xun teaches research group and uses mixed solution method, by regulating and controlling the type of alcohol in solution, The MoS of different scale and pattern is prepared2Material.Synthesize monodispersed MoS when alcohols material used is ethyl alcohol2Nanometer Piece tests the discovery of its chemical property as lithium ion battery negative material: cyclical stability and ladder high rate performance compared with Difference.In 100mAg-1Low current under, capacity sharp-decay, circulation 50 times after, reversible capacity only has 606mAh g-1；With Current density is gradually increased, and capacity attenuation is very fast, and when electric current is restored to initial current, capacity can not be restored to initial value (Adv.Mater.,2014, 26,964-969)。
(2) Shandong University Yang Jian teaches research group and uses solvent-thermal method, using the intermediate in reaction process as mould Plate prepares the hollow MoS that nanometer sheet is assembled into2Nano particle.Electrochemical property test shows: in 100mA g-1Electric current it is close After lower circulation 80 times of degree, electrode shows 902mAh g-1Reversible capacity；In 1000mA g-1High current density under, electrode 780mAh g can still be shown-1Reversible capacity (ACS Appl.Mater.Interfaces, 2013,5,1003- 1008).But the preparation process technological parameter controllability is poor.
(3) Zhejiang University Chen Weixiang teaches research group and uses liquid phase method, assists synthesizing using L-cysteine Flaky molybdenum disulfide/graphene composite nano material, then under certain atmosphere, 800 DEG C of annealing 2h obtain final sample.It will A series of molybdenum disulfide/graphene composite nano material of obtained different ratios is carried out as the negative electrode material of lithium ion battery Performance test, as a result, it has been found that first discharge specific capacity highest is close in electric current when the ratio of molybdenum disulfide and graphene is 1:2 Degree is 100mA g-1When, reach 1571mAh g-1, and after 100 circulations, specific discharge capacity is still up to 1187mAh g-1 (ACS Nano,2011,6, 4720-4728).But the preparation process complex process, energy consumption is high.
At present for lithium ion battery negative material MoS2Research to be concentrated mainly on nanosizing, Composite and design special Different pattern.Prepare the pure MoS of nanoscale2Material, due to volume change biggish in charge and discharge process and poor electronics Conductance, and nano material is easy so that activity MoS2Reunite in charge and discharge process, cyclical stability and high rate performance It still needs further improvement；Prepare the MoS of special appearance2Organic formwork or organic surface active agent, preparation process are used mostly Complexity, low yield；It prepares compound and mostly uses solvent-thermal method, surface cladding process, but such preparation method complex technical process, it is multiple Between polymer component together by physisorption, binding force is weaker.
Summary of the invention
The purpose of the present invention is to provide a kind of MoS2Nanoneedle/carbon nanotube composite negative pole material preparation method.
The present invention provides a kind of MoS2Nanoneedle/carbon nanotube composite negative pole material preparation method, it is characterized in that adopting Be grown on carbon nanotube matrix in a manner of extension with nanoscale is prepared with a step chemical vapour deposition technique MoS2, specific process step are as follows:
(1) molybdenum source of certain molar weight, sulphur source and carbon nanotube are uniformly mixed in protective atmosphere, it will be mixed Powder afterwards is placed in sealing device；Wherein, wherein the amount of molybdenum source substance is controlled in 3 × 10-4~1 × 10-2Mol, sulphur source object The amount of matter is controlled 2 × 10- 3~1 × 10- 1The amount of mol, carbon nanotube material are controlled 5 × 10-4~4 × 10-3mol；
(2) protective gas that certain flow is passed through in tube furnace will be installed on obtained in step (1), in certain temperature Lower heat treatment certain time.Wherein, gas flow control is controlled in 10~100sccm, heat treatment time in 1~8h；
Wherein protective atmosphere described in step (1) is high-purity argon gas or high pure nitrogen；The molybdenum source is molybdenum oxide, molybdenum Sour ammonium or phosphomolybdic acid；The sulphur source is sulphur powder, thiocarbamide, thioacetamide or carbon disulfide；The sealing device is stainless Steel seal pipe or quartz glass seals pipe；
Temperature in step (2) is that protective gas is high-purity argon gas or high pure nitrogen；The certain temperature, refers to heat The temperature of processing is 600~900 DEG C.
The invention discloses a kind of MoS2Nanoneedle is epitaxially grown in the preparation method of carbon nanotube composite negative pole material.It is logical It crosses using chemical vapour deposition technique, prepares MoS2Nanoneedle/carbon nano tube compound material.MoS2With carbon nanotube in interface Coherence combines, and improves the bond strength of the two, guarantees that active material configuration is stablized in charge and discharge process, and accelerate electrochemical reaction The transmission of electronics in the process；MoS2Nanoneedle prevents nano active substance in charge and discharge process in being uniformly distributed for carbon nanotube Reunite；Flexible carrier carbon nanotube can alleviate volume change of the active material in charge and discharge process, ensure electrode knot Structure stability.Final MoS2Nanoneedle/carbon nano tube compound material shows stable cycle performance and excellent high rate performance.
The advantage of the invention is that the preparation process of composite material is simple, yield is big, is suitble to large-scale industrial production.This The MoS of method preparation2Nanoneedle/carbon nano tube compound material has stable cycle performance and excellent high rate performance, is one The ideal lithium ion battery negative material of kind, can be widely applied to portable electronic device, electric car and aerospace etc. Field.
Detailed description of the invention
Fig. 1 is the MoS of embodiment 12Nanoneedle/carbon nano tube compound material field emission scanning electron microscope figure.
Fig. 2 is the MoS of embodiment 12Nanoneedle/carbon nano tube compound material transmission electron microscope picture.
Fig. 3 is the MoS of embodiment 12Nanoneedle/carbon nano tube compound material cycle performance figure.
Fig. 4 is the MoS of embodiment 12Nanoneedle/carbon nano tube compound material high rate performance figure.
Specific embodiment
Below with reference to embodiment, the present invention will be further described, but is not limited to protection scope of the present invention:
Embodiment 1:
The molybdenum trioxide of 0.1g, the thiocarbamide of 0.5g and the carbon nanotube of 0.012g are uniformly mixed in an ar atmosphere, it will Powder after mixing is placed in stainless steel seal pipe.Stainless steel seal pipe obtained above is placed in tube furnace and is passed through air-flow Amount is that the Ar gas of 10sccm finally obtains MoS in 600 DEG C of heat treatment 8h2Nanoneedle/carbon nano tube compound material.
By the MoS of 75wt.% obtained2Nanoneedle/carbon nano tube compound material, the acetylene black of 15wt.% and The sodium carboxymethylcellulose of 15wt.% is uniformly mixed, and slurry is made, is coated uniformly on copper foil, circle is stamped into after vacuum drying Shape electrode plates are to electrode, 1mol L with lithium metal-1LiPF6/ EC+DEC+DMC (volume ratio 1:1:1) is electrolyte, Celgard 2400 is diaphragm, is assembled into button cell.Constant current charge-discharge test is carried out to battery, charging/discharging voltage range is 0.01~3.0V, the results showed that, with preferable chemical property: 0.1A g-1Current density under, circulation 20 times after it is compound Material has up to 1030mAh g-1Reversible specific capacity；Even if in 2A g-1High current density under, composite material still table Reveal 750mAh g-1Reversible specific capacity, high rate performance is excellent.
Embodiment 2:
The phosphomolybdic acid of 0.4g, the sulphur powder of 0.55g and the carbon nanotube of 0.024g are uniformly mixed in an ar atmosphere, it will Powder after mixing is placed in quartz glass seals pipe.Quartz glass seals pipe obtained above is placed in tube furnace and is passed through Throughput is the N of 40sccm2Gas finally obtains MoS in 800 DEG C of heat treatment 3h2Nanoneedle/carbon nano tube compound material.
By the MoS of 75wt.% obtained2Nanoneedle/carbon nano tube compound material, the acetylene black of 15wt.% and The sodium carboxymethylcellulose of 15wt.% is uniformly mixed, and slurry is made, is coated uniformly on copper foil, circle is stamped into after vacuum drying Shape electrode plates are to electrode, 1mol L with lithium metal-1LiPF6/ EC+DEC+DMC (volume ratio 1:1:1) is electrolyte, Celgard 2400 is diaphragm, is assembled into button cell.Constant current charge-discharge test is carried out to battery, charging/discharging voltage range is 0.01~3.0V, the results showed that, with preferable chemical property: 0.1A g-1Current density under, circulation 20 times after it is compound Material has up to 870mAh g-1Reversible specific capacity；Even if in 2A g-1High current density under, composite material still shows 640mAh g out-1Reversible specific capacity, high rate performance is excellent.
Embodiment 3:
In N2By the ammonium molybdate of 0.1g in atmosphere, the carbon nanotube mixing of the thioacetamide and 0.018g of 0.3g is equal It is even, the powder after mixing is placed in stainless steel seal pipe.Stainless steel seal pipe obtained above is placed in tube furnace and is led to Enter the N that throughput is 80sccm2Gas finally obtains MoS in 700 DEG C of heat treatment 5h2Nanoneedle/carbon nano tube compound material.
By the MoS of 75wt.% obtained2Nanoneedle/carbon nano tube compound material, the acetylene black of 15wt.% and The sodium carboxymethylcellulose of 15wt.% is uniformly mixed, and slurry is made, is coated uniformly on copper foil, circle is stamped into after vacuum drying Shape electrode plates are to electrode, 1mol L with lithium metal- 1LiPF6/ EC+DEC+DMC (volume ratio 1:1:1) is electrolyte, Celgard 2400 is diaphragm, is assembled into button cell.Constant current charge-discharge test is carried out to battery, charging/discharging voltage range is 0.01~3.0V, the results showed that, with preferable chemical property: 0.1A g-1Current density under, circulation 20 times after it is compound Material has up to 950mAh g-1Reversible specific capacity；Even if in 2A g-1High current density under, composite material still shows 700mAh g out-1Reversible specific capacity, high rate performance is excellent.

Claims (5)

1. a kind of MoS2Nanoneedle/carbon nanotube composite negative pole material preparation method, it is characterized in that using a step chemical vapor deposition Area method is prepared with nanoscale and the MoS that is epitaxially grown on carbon nanotube matrix2Nanoneedle, specific process step are as follows:
(1) molybdenum source of certain molar weight, sulphur source and carbon nanotube are uniformly mixed in protective atmosphere, after mixing Powder is placed in sealing device；Wherein, the amount of molybdenum source substance is controlled 3 × 10-4~1 × 10-2Mol, the amount control of sulphur source substance 2 × 10-3~1 × 10-1The amount of mol, carbon nanotube material are controlled 5 × 10-4~4 × 10-3mol；
(2) sealing device described in step (1) is passed through to the protective gas of certain flow in tube furnace, in certain temperature Lower heat treatment certain time；Wherein, gas flow control is controlled in 10~100sccm, heat treatment time in 1~8h；
Protective atmosphere described in step (1) is high-purity argon gas or high pure nitrogen；
Sealing device described in step (1) is stainless steel seal pipe or quartz glass seals pipe.
2. MoS according to claim 12Nanoneedle/carbon nanotube composite negative pole material preparation method, it is characterised in that: Molybdenum source described in step (1) is molybdenum oxide, ammonium molybdate or phosphomolybdic acid.
3. MoS according to claim 12Nanoneedle/carbon nanotube composite negative pole material preparation method, it is characterised in that: Sulphur source described in step (1) is sulphur powder, thiocarbamide, thioacetamide or carbon disulfide.
4. MoS according to claim 12Nanoneedle/carbon nanotube composite negative pole material preparation method, it is characterised in that: Protective gas in step (2) is high-purity argon gas or high pure nitrogen.
5. MoS according to claim 12Nanoneedle/carbon nanotube composite negative pole material preparation method, it is characterised in that: Certain temperature described in step (2) refers to that the temperature of heat treatment is 600~900 DEG C.
CN201610875853.9A 2016-09-30 2016-09-30 MoS2Nanoneedle/carbon nanotube composite negative pole material preparation method Active CN106450185B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610875853.9A CN106450185B (en) 2016-09-30 2016-09-30 MoS2Nanoneedle/carbon nanotube composite negative pole material preparation method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610875853.9A CN106450185B (en) 2016-09-30 2016-09-30 MoS2Nanoneedle/carbon nanotube composite negative pole material preparation method

Publications (2)

Publication Number Publication Date
CN106450185A CN106450185A (en) 2017-02-22
CN106450185B true CN106450185B (en) 2019-05-10

Family

ID=58172793

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610875853.9A Active CN106450185B (en) 2016-09-30 2016-09-30 MoS2Nanoneedle/carbon nanotube composite negative pole material preparation method

Country Status (1)

Country Link
CN (1) CN106450185B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107934939A (en) * 2017-11-14 2018-04-20 中山大学 A kind of controllable MoS of the number of plies2The preparation method of/carbon nano tube compound material
CN107892330B (en) * 2017-12-01 2019-06-25 东华大学 A kind of preparation method of piece heap molybdenum disulfide nano tube
CN109904408B (en) * 2019-01-09 2021-01-01 哈尔滨工业大学（深圳） MoS2Preparation method and application of composite material with nanosheet embedded in carbon substrate
CN110380028B (en) * 2019-07-08 2022-09-09 武汉理工大学 CNT/MoS 2 Lithium ion battery cathode material and preparation method thereof
GB2615511A (en) * 2021-12-07 2023-08-16 Oxlid Ltd Electrochemical cell

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104835964A (en) * 2015-05-14 2015-08-12 哈尔滨工业大学 Three-dimensional macroporous graphene, carbon nano tube and molybdenum disulfide composite material, and preparation method and application of composite material

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104835964A (en) * 2015-05-14 2015-08-12 哈尔滨工业大学 Three-dimensional macroporous graphene, carbon nano tube and molybdenum disulfide composite material, and preparation method and application of composite material

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"Multilayered MoS2 nanoflakes bound to carbon nanotubes as electron acceptors in bulk heterojunction inverted organic solar cells";Il Jeon,et al.;《Organic Electronics》;20141226;第17卷;275-280
"锂离子电池SnS2基负极材料";刘欣，等.;《化学进展》;20140903;第26卷(第9期);1586-1595

Also Published As

Publication number Publication date
CN106450185A (en) 2017-02-22

Similar Documents

Publication Publication Date Title
CN106450185B (en) MoS2Nanoneedle/carbon nanotube composite negative pole material preparation method
CN105742602B (en) A kind of sodium-ion battery cathode Sn/MoS2/ C composite and preparation method thereof
CN108598390B (en) Preparation method of positive electrode material for lithium-sulfur battery and lithium-sulfur battery
CN107425185B (en) Preparation method of carbon nanotube-loaded molybdenum carbide material and application of carbon nanotube-loaded molybdenum carbide material in lithium-sulfur battery positive electrode material
CN106654215B (en) Biological micromolecule and graphene composite material functional membrane and preparation method thereof
CN111211300A (en) Metallic nickel/nitrogen doped carbon nanotube and lithium-sulfur battery composite positive electrode material thereof
CN104966824A (en) Nitrogen-doped porous carbon sphere and cobaltous oxide nano-composite anode material based on chitosan and derivatives thereof and preparation method thereof
CN106505204B (en) A kind of lithium-sulphur cell positive electrode binder and preparation method thereof
CN107464938B (en) Molybdenum carbide/carbon composite material with core-shell structure, preparation method thereof and application thereof in lithium air battery
CN107452951A (en) XS2@YSe2The preparation method of the anode material of lithium-ion battery of core shell structure
CN109148859A (en) A kind of preparation method of double carbon-coating coated manganese oxide composite materials
CN112018344B (en) Carbon-coated nickel sulfide electrode material and preparation method and application thereof
CN110571416A (en) Transition metal selenium-sulfur compound and preparation method thereof
CN109830662A (en) A kind of phosphorus doping nanometer silicon lithium ion battery cathode material and preparation method thereof
CN110931729A (en) Preparation method of multiplying power type lithium ion battery silicon composite oxide material
CN108306001B (en) Lithium ion battery cathode material Fe3O4Preparation method of/N-C
CN108987735A (en) A kind of porous hollow carbon ball load stannous sulfide nano-quantum point combination electrode material
CN104577126A (en) Method for preparing MWCNT@a-C@Co9S8 composite electrode material with uniform morphology and application of material in lithium electrode
CN110224126B (en) Iron-nickel sulfide nano material and preparation method and application thereof
CN107482196B (en) Composite nano material for lithium ion battery and preparation method thereof
CN106058193A (en) Novel negative electrode material of sodium-ion battery as well as preparation method and application thereof
CN105845920B (en) A kind of high circulation stability nanometer rods self assembly molybdenum trioxide material and preparation method thereof
CN107681133A (en) A kind of lithium ion battery negative material and preparation method
CN113594427B (en) MoS 2 Negative electrode material of-MoP quantum dot @ carbon composite sodium ion battery and preparation method of negative electrode material
CN103035918A (en) SnO2-C compound, preparation method thereof and application of SnO2-C compound as negative electrode material of lithium ion battery casing

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant