CN101609883B - Preparation method of nano-silver particle dispersed Li4Ti5O12 thin film lithium ion battery negative electrode - Google Patents

Preparation method of nano-silver particle dispersed Li4Ti5O12 thin film lithium ion battery negative electrode Download PDF

Info

Publication number
CN101609883B
CN101609883B CN2009100889058A CN200910088905A CN101609883B CN 101609883 B CN101609883 B CN 101609883B CN 2009100889058 A CN2009100889058 A CN 2009100889058A CN 200910088905 A CN200910088905 A CN 200910088905A CN 101609883 B CN101609883 B CN 101609883B
Authority
CN
China
Prior art keywords
preparation
film
thin film
lithium
negative electrode
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.)
Expired - Fee Related
Application number
CN2009100889058A
Other languages
Chinese (zh)
Other versions
CN101609883A (en
Inventor
胡晨
卢祥军
汪浩
潘山存
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.)
Dalian Derun Industry Co., Ltd.
Original Assignee
BEIJING ANHUA LIANHE ENERGY TECHNOLOGY Co Ltd
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 BEIJING ANHUA LIANHE ENERGY TECHNOLOGY Co Ltd filed Critical BEIJING ANHUA LIANHE ENERGY TECHNOLOGY Co Ltd
Priority to CN2009100889058A priority Critical patent/CN101609883B/en
Publication of CN101609883A publication Critical patent/CN101609883A/en
Application granted granted Critical
Publication of CN101609883B publication Critical patent/CN101609883B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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

  • Battery Electrode And Active Subsutance (AREA)

Abstract

The invention discloses a preparation method of an all solid-state film lithium ion battery negative electrode-a nano-silver particle dispersed Li4Ti5O12 negative electrode thin film, which belongs to the technical field of electrochemistry. The process is as follows: material preparation: dissolving compounds of titanium and the compounds of lithium in an organic solvent for obtaining solution Aand mixing water, complexing agent and silver nitrate for obtaining solution B; preparation of precursor solution as follows: stirring and mixing the solution A and the solution B to a stable sol; and the preparation of the thin film: preparing a gel thin film on a substrate through the sol-gel method, carrying out preheating decomposition at 200-400 DEG C, annealing in an H2 atmosphere at 600-800 DEG C and further preparing the Ag/Li4Ti5O12 thin film. The thin film provided by the invention has the advantages of controllable stoichiometric composition, simple preparation method, process and equipment and easy preparation of the negative electrode thin film with large area. Compared with the traditional Li4Ti5O12 thin film negative electrode, the lithium ion battery negative electrode of the invention has high area specific capacity and excellent cycle performance in case of high multiplying power discharge.

Description

A kind of nano-Ag particles disperses Li 4Ti 5O 12Film lithium ion battery negative pole preparation method
Technical field
The invention discloses a kind of Ag/Li 4Ti 5O 12Method for manufacturing thin film, prepared film can be used as negative material and is applied to solid-State Thin Film Li-Ion Batteries, belongs to technical field of electrochemistry.
Background technology
Film lithium cell is a kind of secondary cell of extensive application prospect, and discharge voltage height charge-discharge performance is good, mass-energy density metric density advantages of higher but it has.At present abroad, become focus about the research of film lithium cell, and at home about the research of film lithium cell carry out also few.In recent years, although some full solid thin film batteries emerge gradually, their performance still needs further to improve.Current research mainly concentrates on anode thin film, has also obtained bigger progress, and the research of anticathode film report also seldom, particularly still expects to solve for the improvement of negative film security performance and the problems such as optimization of manufacturing process.Lithium metal is often used as the anode material of film lithium cell, and fusing point is low, chemism is high-leveled and difficult to bear shortcomings such as high-temperature soldering but exist; The safety problem and material with carbon element might set off an explosion in the super-charge super-discharge process etc.Therefore, the new negative film of development high-performance, low cost and safe and reliable height ratio capacity has very important significance to exploitation full solid thin film battery.
Spinel-type Li 4Ti 5O 12Be that a kind of " zero strain " inserts material, it is with good cycle performance and stable structure and become a kind of material that is subjected to extensive concern in the lithium ion battery negative material extremely.Li 4Ti 5O 12The about 1.55V of plateau potential (vs.Li/Li+), during as lithium ion battery negative, high more a lot of than lithium metal and carbon-based material current potential, the surface does not form passivating film, in the fast charging and discharging process, avoided to cause the lithium metal electro-deposition of potential safety hazard, so use Li 4Ti 5O 12Has good security performance as negative material.But Li 4Ti 5O 12Be insulating material, the electronic conductivity performance is very low, and high rate during charging-discharging is very poor.Therefore, also need further to improve Li 4Ti 5O 12Performances such as the high-multiplying power discharge of film.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, provide a kind of and will be used for negative film and the manufacture method thereof that solid-State Thin Film Li-Ion Batteries is used,, prepare a kind of nano-Ag particles and disperse Li by adding electric conductivity good metal silver 4Ti 5O 12Film improves battery machining area specific capacity and cycle performance under high magnification.
Purpose of the present invention is achieved through the following technical solutions:
A kind of negative film preparation methods is characterized in that it is undertaken by following step:
(1) preparation precursor solution: take by weighing the compound of a certain amount of lithium, the compound of titanium, and be dissolved in the organic solvent mixture stirred A liquid; Take by weighing a certain amount of deionized water again, complexing agent and silver nitrate powder, mixing the back constantly stirs, all dissolve up to silver nitrate and complexing agent, get B liquid, the wherein compound of titanium: the compound of lithium: organic solvent: deionized water: complexing agent: silver nitrate (mol ratio)=1: 0.9: 15～60: 15～60: 1.9: 0.01～0.2; A liquid and B liquid are mixed back continuation stirring, up to the precursor sol that obtains colour stable, again that colloidal sol ageing under room temperature is stand-by;
(2) preparation Ag/Li 4Ti 5O 12Film: carry out film preparation with sol evenning machine, solution is dripped on the carrier substrate, with after 5～20 seconds of 200～1000rpm running, 2000～5000rpm turned round for 20～50 seconds again, whenever even glue carries out once pre-thermal decomposition process after once, pre-heat decomposition temperature is 200～400 ℃, and the time was 60～300 seconds; Behind the even glue 10～50 times, at H 2600～800 ℃ of annealing 10～60min obtain Ag/Li in the atmosphere 4Ti 5O 12Film.
The invention has the advantages that:
1. Zhi Bei Ag/Li 4Ti 5O 12Film densification, even, the stoichiometric composition of film is controlled;
2. cycle performance is good: nano-Ag particles is dispersed in Li 4Ti 5O 12The dispersiveness that has height in the film, these nanometer Ag particles have formed a conductive network in film, thereby strengthened electrically contacting between film self, film and substrate, film and the electrolyte, improved the electronic conductivity of material, reduce the electric charge transfger impedance, improved battery machining area specific capacity and cycle performance under high magnification;
3. preparation process is simple, and is cheap.
Description of drawings
Fig. 1 is an example 1,2,3, and the Ag/Li that makes of Comparative Examples 4Ti 5O 12The nanometer negative film is the discharge cycles performance map of 5C at discharging current.
Embodiment
In order better to illustrate the present invention, describe below in conjunction with example.
Example 1
Take by weighing a certain amount of acetylacetone,2,4-pentanedione lithium, isopropyl titanate, and be dissolved in the organic solvent butanols, with mixture stir A liquid; Take by weighing a certain amount of deionized water again, glacial acetic acid and silver nitrate powder, mixing the back constantly stirs, all dissolve up to silver nitrate and complexing agent, get B liquid, wherein isopropyl titanate: acetylacetone,2,4-pentanedione lithium: propyl alcohol: deionized water: glacial acetic acid: silver nitrate (mol ratio)=1: 0.9: 15: 60: 1.9: 0.0103; A liquid and B liquid are mixed back continuation stirring, up to the precursor sol that obtains colour stable, again that colloidal sol ageing under room temperature is stand-by; When sparing film, solution is dripped on the substrate.The 1000rpm of elder generation turned round after 5 seconds, and 2000rpm turned round for 50 seconds again.Whenever even glue once after, film 200 ℃ of 300 seconds of thermal decomposition process, behind the even glue 15 times, is placed H with sample 2Carry out annealing in process 10min in the atmosphere, annealing temperature is 800 ℃, obtains the Ag/Li that Ag content is 1wt% 4Ti 5O 12Laminated film.
With the positive pole of making, be assembled into the CR2016 button battery with metal lithium sheet (purity is greater than 99%) as lithium ion battery.Electrolyte is 1mol/L LiPF 6/ (EC: DMC: EMC) (volume ratio 1: 1: 1), barrier film is the Celgard2400 microporous barrier.In the glove box that is full of argon gas gas, carry out anhydrous, the anaerobic assembling (moisture is less than 1ppm, and oxygen content is less than 1ppm) of lithium ion battery.Battery adopts the 5C constant-current discharge, and charging/discharging voltage is 1.0～2.5V., loop test Ag/Li in 23 ± 2 ℃ of environment 4Ti 5O 12The charge-discharge performance of nanometer negative film (seeing b curve among Fig. 1).
Example 2
Take by weighing a certain amount of tetrabutyl titanate, acetylacetone,2,4-pentanedione lithium, and be dissolved in the organic solvent butanols, with mixture stir A liquid; Take by weighing a certain amount of deionized water again, glacial acetic acid and silver nitrate powder, mixing the back constantly stirs, all dissolve up to silver nitrate and complexing agent, get B liquid, wherein tetrabutyl titanate: acetylacetone,2,4-pentanedione lithium: butanols: deionized water: polyvinylpyrrolidone (PVP): silver nitrate (mol ratio)=1: 0.9: 30: 40: 1.9: 0.032; A liquid and B liquid are mixed back continuation stirring, up to the precursor sol that obtains colour stable, again that colloidal sol ageing under room temperature is stand-by; When sparing film, solution is dripped on the substrate.The 300rpm of elder generation turned round after 20 seconds, and 3000rpm turned round for 40 seconds again.Whenever behind the even glue 1 time, film 280 ℃ of 200 seconds of thermal decomposition process, behind the even glue 40 times, is placed H with sample 2Carry out annealing in process 60min in the atmosphere, annealing temperature is 600 ℃, and obtaining Ag content is 3wt%Ag/Li 4Ti 5O 12Laminated film.
With the Ag/Li that makes 4Ti 5O 12The nanometer negative film is assembled into the CR2016 button battery as the positive pole of lithium ion battery with metal lithium sheet (purity is greater than 99%).Electrolyte is 1mol/L LiPF 6/ (EC: DMC: EMC) (volume ratio 1: 1: 1), barrier film is the Celgard2400 microporous barrier.In the glove box that is full of argon gas gas, carry out anhydrous, the anaerobic assembling (moisture is less than 1ppm, and oxygen content is less than 1ppm) of lithium ion battery.Battery adopts the 5C constant-current discharge, and charging/discharging voltage is 1.0～2.5V., loop test Ag/Li in 23 ± 2 ℃ of environment 4Ti 5O 12The charge-discharge performance of nanometer negative film (seeing a curve among Fig. 1).
Example 3
Take by weighing a certain amount of tetrabutyl titanate, lithium acetate, and be dissolved in the organic solvent isopropyl alcohol, with mixture stir A liquid; Take by weighing a certain amount of deionized water again, glacial acetic acid and silver nitrate powder, mixing the back constantly stirs, all dissolve up to silver nitrate and complexing agent, get B liquid, wherein tetrabutyl titanate: lithium acetate: EGME: deionized water: glacial acetic acid: silver nitrate (mol ratio)=1: 0.9: 60: 15: 1.9: 0.114; A liquid and B liquid are mixed back continuation stirring, up to the precursor sol that obtains colour stable, again that colloidal sol ageing under room temperature is stand-by; When sparing film, solution is dripped on the substrate.The 500rpm of elder generation turned round after 15 seconds, and 5000rpm turned round for 20 seconds again.Whenever even glue once after, film 400 ℃ of 60 seconds of thermal decomposition process, behind the even glue 30 times, is placed H with sample 2Carry out annealing in process 30min in the atmosphere, annealing temperature is 700 ℃, and obtaining Ag content is 10wt%Ag/Li 4Ti 5O 12Laminated film.
With the Ag/Li that makes 4Ti 5O 12The nanometer negative film is assembled into the CR2016 button battery as the positive pole of lithium ion battery with metal lithium sheet (purity is greater than 99%).Electrolyte is 1mol/L LiPF 6/ (EC: DMC: EMC) (volume ratio 1: 1: 1), barrier film is the Celgard2400 microporous barrier.In the glove box that is full of argon gas gas, carry out anhydrous, the anaerobic assembling (moisture is less than 1ppm, and oxygen content is less than 1ppm) of lithium ion battery.Battery adopts the 5C constant-current discharge, and charging/discharging voltage is 1.0～2.5V., loop test Ag/Li in 23 ± 2 ℃ of environment 4Ti 5O 12The charge-discharge performance of nanometer negative film (seeing C curve among Fig. 1).
Comparative Examples
Take by weighing a certain amount of isopropyl titanate, acetylacetone,2,4-pentanedione lithium, and be dissolved in the organic solvent butanols, with mixture stir A liquid; Take by weighing a certain amount of deionized water again, glacial acetic acid mixes the back and constantly stirs, and all dissolves up to complexing agent, get B liquid, wherein isopropyl titanate: acetylacetone,2,4-pentanedione lithium: propylene glycol monomethyl ether: deionized water: polyvinylpyrrolidone (PVP): (mol ratio)=1: 0.9: 30: 40: 1.9; A liquid and B liquid are mixed back continuation stirring, up to the precursor sol that obtains colour stable, again that colloidal sol ageing under room temperature is stand-by; When sparing film, solution is dripped on the substrate.The 300rpm of elder generation turned round after 20 seconds, and 3000rpm turned round for 40 seconds again.Whenever behind the even glue 1 time, film 280 ℃ of 200 seconds of thermal decomposition process, behind the even glue 40 times, is placed H with sample 2Carry out annealing in process 60min in the atmosphere, annealing temperature is 600 ℃, and obtaining Ag content is 0wt%Ag/Li 4Ti 5O 12Laminated film.
With the Ag/Li that makes 4Ti 5O 12The nanometer negative film is assembled into the CR2016 button battery as the positive pole of lithium ion battery with metal lithium sheet (purity is greater than 99%).Electrolyte is 1mol/L LiPF 6/ (EC: DMC: EMC) (volume ratio 1: 1: 1), barrier film is the Celgard2400 microporous barrier.In the glove box that is full of argon gas gas, carry out anhydrous, the anaerobic assembling (moisture is less than 1ppm, and oxygen content is less than 1ppm) of lithium ion battery.Battery adopts the 5C constant-current discharge, and charging/discharging voltage is 1.0～2.5V., loop test Ag/Li in 23 ± 2 ℃ of environment 4Ti 5O 12The charge-discharge performance of nanometer negative film (seeing d curve among Fig. 1).

Claims (3)

1. a nano-Ag particles disperses Li 4Ti 5O 12Film lithium ion battery negative pole preparation method is characterized in that, may further comprise the steps:
(1) preparation precursor solution: take by weighing the compound of a certain amount of lithium, the compound of titanium, and be dissolved in the organic solvent mixture stirred A liquid; Take by weighing a certain amount of deionized water again, complexing agent and silver nitrate powder, mixing the back constantly stirs, all dissolve up to silver nitrate and complexing agent, get B liquid, the wherein compound of titanium: the compound of lithium: organic solvent: deionized water: complexing agent: the mol ratio of silver nitrate=1: 0.9: 15～60: 15～60: 1.9: 0.01～0.2; A liquid and B liquid are mixed back continuation stirring, up to the precursor sol that obtains colour stable, again that colloidal sol ageing under room temperature is stand-by; The compound of said titanium is tetrabutyl titanate or isopropyl titanate; The compound of said lithium is lithium acetate or acetylacetone,2,4-pentanedione lithium; Said complexing agent is glacial acetic acid, citric acid, oxalic acid or polyvinylpyrrolidone;
(2) preparation Ag/Li 4Ti 5O 12Film: carry out film preparation with sol evenning machine, solution is dripped on the carrier substrate, with after 5～20 seconds of 200～1000rpm running, turned round for 20～50 seconds with 2000～5000rpm again, whenever even glue carries out once pre-thermal decomposition process after once, pre-heat decomposition temperature is 200～400 ℃, and the time was 60～300 seconds; Behind the even glue 10～50 times, at H 2600～800 ℃ of annealing 10～60min obtain Ag/Li in the atmosphere 4Ti 5O 12Film.
2. nano-Ag particles according to claim 1 disperses Li 4Ti 5O 12Film lithium ion battery negative pole preparation method is characterized in that said organic solvent is a methyl alcohol, ethanol, propyl alcohol, isopropyl alcohol, butanols, the mixture of one or more of EGME, propylene glycol monomethyl ether.
3. nano-Ag particles according to claim 1 disperses Li 4Ti 5O 12Film lithium ion battery negative pole preparation method is characterized in that said carrier is Pt/SiO 2/ Si, Au/SiO 2/ Si, Pt, Au or quartz substrate.
CN2009100889058A 2009-07-13 2009-07-13 Preparation method of nano-silver particle dispersed Li4Ti5O12 thin film lithium ion battery negative electrode Expired - Fee Related CN101609883B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009100889058A CN101609883B (en) 2009-07-13 2009-07-13 Preparation method of nano-silver particle dispersed Li4Ti5O12 thin film lithium ion battery negative electrode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009100889058A CN101609883B (en) 2009-07-13 2009-07-13 Preparation method of nano-silver particle dispersed Li4Ti5O12 thin film lithium ion battery negative electrode

Publications (2)

Publication Number Publication Date
CN101609883A CN101609883A (en) 2009-12-23
CN101609883B true CN101609883B (en) 2011-01-05

Family

ID=41483539

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009100889058A Expired - Fee Related CN101609883B (en) 2009-07-13 2009-07-13 Preparation method of nano-silver particle dispersed Li4Ti5O12 thin film lithium ion battery negative electrode

Country Status (1)

Country Link
CN (1) CN101609883B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT509504A1 (en) * 2010-02-19 2011-09-15 Rubacek Lukas METHOD FOR PRODUCING LITHIUM TITANATE
CN101944612B (en) * 2010-08-18 2013-03-27 东莞新能源科技有限公司 Lithium titanate cathode material and preparation method thereof and lithium ion battery using lithium titanate cathode material
CN102544438A (en) * 2010-12-20 2012-07-04 梅岭化工厂 Lithium titanate electrode doped with nanometer silver powder for lithium ion battery and preparation method for electrode
CN102610824A (en) * 2012-03-26 2012-07-25 上海大学 Preparation method of lithium titanate (Li4Ti5O12)/Ag composite lithium-ion negative electrode materials
CN103400977B (en) * 2013-08-19 2015-06-17 攀枝花学院 Sol-gel method for preparing lithium titanate
BE1021719B1 (en) * 2013-10-31 2016-01-12 Prayons S.A. PROCESS FOR THE PRODUCTION OF THIN FILMS BY WETWAY
CN103840135B (en) * 2014-03-27 2016-05-04 合肥国轩高科动力能源有限公司 Preparation method of lithium titanate material membrane electrode
CN105932272B (en) * 2016-05-23 2018-11-13 渤海大学 A kind of preparation method of metatitanic acid chromium lithium nano material
CN113380971B (en) * 2021-06-07 2022-11-15 吉首大学 Composite negative electrode material of thin-film lithium ion battery and preparation method thereof
CN113380972A (en) * 2021-06-07 2021-09-10 吉首大学 Low-resistance lithium ion battery negative electrode film and preparation method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1588677A (en) * 2004-09-17 2005-03-02 中国科学院上海硅酸盐研究所 Lithium secondary cell composite electrode material capable of high power discharging and charging and preparing method
CN101000960A (en) * 2006-12-29 2007-07-18 深圳市贝特瑞电子材料有限公司 Composite lithium titanate electrode material and preparation method thereof
CN101373829A (en) * 2008-10-07 2009-02-25 深圳市贝特瑞新能源材料股份有限公司 Titanium-series cathode active material and preparation method thereof, titanium-series lithium ion power battery

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1588677A (en) * 2004-09-17 2005-03-02 中国科学院上海硅酸盐研究所 Lithium secondary cell composite electrode material capable of high power discharging and charging and preparing method
CN101000960A (en) * 2006-12-29 2007-07-18 深圳市贝特瑞电子材料有限公司 Composite lithium titanate electrode material and preparation method thereof
CN101373829A (en) * 2008-10-07 2009-02-25 深圳市贝特瑞新能源材料股份有限公司 Titanium-series cathode active material and preparation method thereof, titanium-series lithium ion power battery

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Shahua Huang etal.Improving the electrochemical performance of Li4Ti5O12/Ag composite by an electroless deposition method.《Electrochimica Acta》.2006,第52卷3704-3708. *
Shahua Huang etal.Li4Ti5O12/Ag composite as electrode materials for lithium-ion battery.《Solid State Ionics》.2006,第177卷851-855. *

Also Published As

Publication number Publication date
CN101609883A (en) 2009-12-23

Similar Documents

Publication Publication Date Title
CN101609883B (en) Preparation method of nano-silver particle dispersed Li4Ti5O12 thin film lithium ion battery negative electrode
CN103022446B (en) A kind of lithium ion battery silicon oxide/carbon negative material and preparation method thereof
CN104241626B (en) The process for preparing sol-gel of lithium ion battery lithium vanadate negative material
CN109888245B (en) Titanium niobium oxygen/carbon composite material with oxygen vacancy and carbon coating adjustment and preparation method and application thereof
CN103545519B (en) Coated lithium-rich anode material of a kind of carbon and preparation method thereof
CN101635348B (en) Tantalum-containing lithium ion battery cathode material lithium titanate preparation method
CN103972497B (en) Lithium ion battery Co2snO4/ C nano composite negative pole material and preparation and application thereof
CN110104677B (en) Composite lithium titanate material and preparation method and application thereof
CN101777644A (en) Method for preparing carbon-encapsulated magnesium-doped lithium ion battery cathode material lithium titanate
CN103928668B (en) Lithium ion battery and preparation method of anode material thereof
CN111029552B (en) High-voltage high-rate lithium cobalt oxide cathode material and preparation method thereof
CN104852040B (en) A kind of preparation method of the nickel lithium manganate cathode material of high multiplying power lithium ion battery
CN103390748B (en) A kind of preparation method of alumina-coated lithium cobaltate cathode material
WO2022133926A1 (en) Lithium-ion secondary battery and preparation method therefor, battery module, battery pack, and device
CN104638253A (en) Preparation method of Si and C-RG core-shell composite material used as cathode of lithium ion battery
CN102738454B (en) Surface coating material for cathode material of lithium ion battery and preparation method
CN103236518A (en) Lithium ion battery negative nanometer material SnO2/MCMB (Mesophase Carbon Micro Beads) shell, and preparation method and application thereof
CN103771500A (en) Preparation method of lithium ion secondary battery with nanometer lithium titanate simultaneously doped at A and B site
CN103441257B (en) A kind of preparation method of lithium titanate material
CN102569813A (en) Preparation method of lithium ion battery molybdenum oxide carbon composite cathode material
CN102104149A (en) Lithium iron phosphate composite anode material in lithium-ion battery and preparation method thereof
CN101764227A (en) Lithium ferrosilicon silicate/carbon composite cathode material and preparation method thereof
CN103579598A (en) Preparation method of cathode material nano lithium titanate of lithium ion secondary battery
CN103579599A (en) Preparation method of yttrium-containing lithium ion battery cathode material lithium titanate carbon-coated composite material
CN105671363B (en) A kind of antimony-containing alloy material and its application

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
ASS Succession or assignment of patent right

Owner name: DALIAN DERUNDA INDUSTRY CO., LTD.

Free format text: FORMER OWNER: BEIJING ANHUA UNITED POWER CO., LTD.

Effective date: 20111206

C41 Transfer of patent application or patent right or utility model
COR Change of bibliographic data

Free format text: CORRECT: ADDRESS; FROM: 101102 TONGZHOU, BEIJING TO: 116600 DALIAN, LIAONING PROVINCE

TR01 Transfer of patent right

Effective date of registration: 20111206

Address after: 116600 Huaihe East Road, Dalian economic and Technological Development Zone, Liaoning 157, China

Patentee after: Dalian Derun Industry Co., Ltd.

Address before: 101102 Beijing City, Tongzhou District Majuqiao town Zhongguancun Golden Bridge Industrial Technology Base Jing Sheng South four Street No. 15 East Valley 15A U

Patentee before: Beijing Anhua Lianhe Energy Technology Co., Ltd.

C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110105

Termination date: 20130713