CN103017502B - Dewatering system and method for improving water content of positive and negative electrode plates of batteries - Google Patents
Dewatering system and method for improving water content of positive and negative electrode plates of batteries Download PDFInfo
- Publication number
- CN103017502B CN103017502B CN201210531150.6A CN201210531150A CN103017502B CN 103017502 B CN103017502 B CN 103017502B CN 201210531150 A CN201210531150 A CN 201210531150A CN 103017502 B CN103017502 B CN 103017502B
- Authority
- CN
- China
- Prior art keywords
- pole piece
- air
- moisture
- lithium ion
- ion battery
- 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
Links
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
Abstract
The invention discloses a dewatering system, which comprises a body (1) and a shell (2) sleeved on the body (1), a blast cavity is arranged in the body (1), the top of the blast cavity is provided with an opening (3) which communicates with the outside of the shell (2), and a heater (4) is arranged in the blast cavity. The invention also discloses a method for improving the water content of positive and negative electrode plates of batteries, which includes the following steps: after a coating process, the high-temperature dewatering systems remove the water adsorbed on the surface of an electrode plate (11) contacted with the air and the water and crystal water adsorbed between active substance particles. The invention has the advantages that: by adding a plurality of sets of high-temperature dewatering systems, the water adsorbed on the surfaces of positive and negative electrode plates can be removed in time, and meanwhile, because an infrared heater, a lightwave heater or a ceramic heater is adopted, the heater reduces the energy consumed by heating in comparison with the conventional electric heating wire.
Description
Technical field
The present invention relates to lithium ion battery processing technique field, particularly a kind of de-watering apparatus and improve the method for lithium ion battery plus-negative plate pole piece water content.
Background technology
Along with the increasingly mature of the association area products such as digital product, electric bicycle, battery-operated motor cycle, electrocar, electrically-operated platform truck and development, require also harsher to lithium ion battery uniformity and cost etc.For the importance that the stability and expansion lithium ion battery that can improve lithium ion battery are applied in association area and developed, in the manufacture and control procedure of lithium ion battery, it is an important breakthrough mouth that reduction moisture is controlled cost.
Lithium ion battery composition is by positive active material (LiCoO
3, LiMnO
2, LiNi
0.zco
0.ymn
0.xo, LiMPO
4), negative electrode active material (graphite), electrolyte (LiPF
6deng), isolator (PP, PE), Copper Foil, aluminium foil, the compositions such as unlike material housing.
In lithium ion battery, the number of moisture is the key factor affecting lithium ion battery combination property, moisture and lithium ion battery electrolyte (LiPF
6) there is decomposition reaction generation hydrofluoric acid (HF), i.e. H
2o+LiP F
6→ LiF+2HF ↑+POF
3, because HF is high toxicity gas and have severe corrosive.Hydrofluoric acid (HF) material can have dissolving in various degree to active substance of lithium ion battery anode; deposit in various degree can be formed at lithium ion battery negative pole active materials particle or negative plate surface; affect the formation of lithium ion battery negative SEI film; or destroy the SEI film of lithium ion battery negative formation; add interface impedance, thus affect lithium ion battery combination property.
At present, for just reducing, grain moisture content between negative plate active material particle and particle, usually by increasing roasting procedure, just control, cathode pole piece ingress of air and increase roasting plant, suppress moisture just, on the impact of battery performance after negative plate surface deposition, as Chinese patent 2011100685043, disclose a kind of production process of waterborne positive lithium ion battery, comprise following operation, both positive and negative polarity is prepared burden, both positive and negative polarity is coated with, film-making, baking, battery core processed, survey short circuit, baking etc., the moisture of pole piece is reduced by baking, but existing processing technology cannot just effectively be improved, the existence of the crystallization water between anode active material particles and particle.
Summary of the invention
The object of the invention is to the shortcoming overcoming prior art, provide a kind of and obviously can improve grain moisture and positive and negative plate adsorption moisture between positive and negative plate active material particle and particle, reduce the de-watering apparatus of integrated cost simultaneously and improve the method for lithium ion battery plus-negative plate pole piece water content.
Object of the present invention is achieved through the following technical solutions: de-watering apparatus, it comprises body and is set in the shell of engine body exterior, air blast chamber is provided with in body, top, air blast chamber is provided with the opening be communicated with hull outside, air blast is provided with heater in chamber, the both sides being up and down positioned at heater in air blast chamber are provided with one deck homogenating plate, air blast chamber is divided into air-inlet cavity, heating chamber and air-out chamber by two-layer homogenating plate, homogenating plate is distributed with air vent, body is also provided with air inlet, and air inlet is communicated with air-inlet cavity.
Described opening is reverse V-shaped opening, and edge is from air blast chamber to the direction of housing exterior, and the draught area of opening reduces gradually.
Described body adopts the heat-barrier material that can block hot-fluid transmission to make.
Described shell adopts stainless steel material to make.
Described heater is infrared heater, light wave heater or ceramic heater.
The method of the improvement lithium ion battery plus-negative plate pole piece water content of the de-watering apparatus described in employing, after painting process, remove pole piece by high temperature water scavenging system and to contact the adsorption moisture of rear surface and active material particle and intergranular adsorption moisture and crystallization moisture with air.
After it is also included in roll processing steps, removes pole piece by high temperature water scavenging system and contact the adsorption moisture of rear surface and the step of active material particle and intergranular adsorption moisture and crystallization moisture with air.
After it is also included in film-making operation, removes pole piece by high temperature water scavenging system and contact the adsorption moisture of rear surface and the step of active material particle and intergranular adsorption moisture and crystallization moisture with air.
Described high temperature water scavenging system comprises two de-watering apparatus being divided into the upper and lower both sides of pole piece, and the opening being positioned at the de-watering apparatus A above pole piece is right against the upper surface of pole piece, and the opening being positioned at the de-watering apparatus B below pole piece is right against the lower surface of pole piece.
Described high temperature water scavenging system is removed pole piece and is contacted the adsorption moisture of rear surface and the method for active material particle and intergranular adsorption moisture and crystallization moisture with air, specifically comprise the following steps: the air inlet of the de-watering apparatus of high temperature water scavenging system is all connected with blower fan, the gas that blower fan is blown into enters air-inlet cavity by air inlet, after even by the homogenating plate A be arranged between air-inlet cavity and heating chamber, enter heating chamber, then by heater, the gas entering heating chamber is heated, evenly blown to the surface of pole piece by opening after gas after heating is even by the homogenating plate B be arranged between heating chamber and air-out chamber, the adsorbed water and just of removing pole piece, the crystallization water between anode active material particles and particle.
Described pole piece is anode pole piece, and described coating machine is positive pole coating machine.
Described pole piece is cathode pole piece, and described coating machine is negative pole coating machine.
Described pelleter is full-automatic pelleter or semi-automatic pelleter.
The present invention has the following advantages: the present invention mainly realized before lithium ion battery prepares assembly process, emphasis to lithium ion battery is just improving classical production process, the problem of low moisture content difficulty is kept in cathode pole piece, both positive and negative polarity pole piece adsorption moisture is removed in time by setting up many group high temperature water scavenging systems, in reduction lithium ion battery preparation process just, negative plate adsorption water and just, the crystallization water between anode active material particles and particle, can just obviously improve, grain moisture and just between negative plate active material particle and particle, negative plate adsorption moisture.Adopt infrared heater, light wave heater or ceramic heater simultaneously, compare and adopt traditional electrical heated filament to reduce heating energy consumption, decrease the fixing infusion of financial resources needing purchase separate bake equipment to bring, thus greatly reduce integrated cost.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention
Fig. 2 is the cross-sectional schematic of the present invention along A-A cross section in Fig. 1
Fig. 3 is the cross-sectional schematic of the present invention along B-B cross section in Fig. 2
Fig. 4 is the structural representation of high temperature water scavenging system of the present invention
In figure, 1-body, 2-shell, 3-opening, 4-heater, 5-air-inlet cavity, 6-heating chamber, 7-air-out chamber, 8-air inlet, 9-de-watering apparatus A, 10-de-watering apparatus B, 11-pole piece, 12-homogenating plate A, 13-homogenating plate B.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described, and protection scope of the present invention is not limited to the following stated:
As shown in Figure 1, Figure 2, Figure 3 shows, de-watering apparatus, it comprises body 1 and is set in the shell 2 of body 1 outside, air blast chamber is provided with in body 1, top, air blast chamber is provided with the opening 3 be communicated with hull outside, heater 4 is provided with in air blast chamber, the both sides being up and down positioned at heater 4 in air blast chamber are provided with one deck homogenating plate, air blast chamber is divided into air-inlet cavity 5, heating chamber 6 and air-out chamber 7 by two-layer homogenating plate, homogenating plate is distributed with air vent, body 1 is also provided with air inlet 8, and air inlet 8 is communicated with air-inlet cavity 5.
Described opening 3 is reverse V-shaped opening 3, and edge is from air blast chamber to the direction of shell 2 outside, and the draught area of opening 3 reduces gradually.
Described body 1 adopts the heat-barrier material that can block hot-fluid transmission to make.
Described shell 2 adopts stainless steel material to make.
Described heater 4 is infrared heater 4, light wave heater 4 or ceramic heater 4.
Improve a method for lithium ion battery plus-negative plate pole piece water content, after painting process, remove pole piece 11 by high temperature water scavenging system and to contact the adsorption moisture of rear surface and active material particle and intergranular adsorption moisture and crystallization moisture with air.
After it is also included in roll processing steps, removes pole piece 11 by high temperature water scavenging system and contact the adsorption moisture of rear surface and the step of active material particle and intergranular adsorption moisture and crystallization moisture with air.
After it is also included in film-making operation, removes pole piece 11 by high temperature water scavenging system and contact the adsorption moisture of rear surface and the step of active material particle and intergranular adsorption moisture and crystallization moisture with air.
Described high temperature water scavenging system comprises two de-watering apparatus being divided into pole piece about 11 both sides, the opening 3 being positioned at the de-watering apparatus A9 above pole piece 11 is right against the upper surface of pole piece 11, and the opening 3 being positioned at the de-watering apparatus B10 below pole piece 11 is right against the lower surface of pole piece 11.
Described high temperature water scavenging system is removed pole piece and is contacted the adsorption moisture of rear surface and the method for active material particle and intergranular adsorption moisture and crystallization moisture with air, specifically comprise the following steps: the air inlet 8 of the de-watering apparatus of high temperature water scavenging system is all connected with blower fan, the gas that blower fan is blown into enters air-inlet cavity 5 by air inlet 8, after even by the homogenating plate A12 be arranged between air-inlet cavity 5 and heating chamber 6, enter heating chamber 6, then by heater 4, the gas entering heating chamber 6 is heated, evenly blown to the surface of pole piece 11 by opening 3 after gas after heating is even by the homogenating plate B13 be arranged between heating chamber 6 and air-out chamber 7, the adsorbed water and just on removing pole piece 11 surface, the crystallization water between anode active material particles and particle.
Described pole piece 11 is anode pole piece, and described coating machine is positive pole coating machine.
Described pole piece 11 is cathode pole piece, and described coating machine is negative pole coating machine.
Described pelleter is full-automatic pelleter or semi-automatic pelleter.
The course of work of the present invention is as follows:
1, by positive active material LiCoO
3, LiMnO
2, LiNi
0.zco
0.ymn
0.xo, LiMPO
4, add in PVDF solution and conducting solution, making after stirring becomes anode sizing agent.
By the anode sizing agent made, be coated on aluminium foil or aluminium uniformly by positive pole coating machine online, dry road prebake through coating machine, make and become positive pole one side pole piece containing positive active material, conductive agent, binding agent, aluminium foil or aluminium net.
By the anode sizing agent made, the area required according to different designs is evenly coated in the reverse side of the positive pole one side pole piece completed, and dries road prebake through positive pole coating machine, and the positive plate completing coating workshop section makes.
Complete the positive plate after the making of coating workshop section, adjustable by the one group of high temperature water scavenging system 60 DEG C ~ 130 DEG C being placed in rolling place of positive pole coating machine, removing anode pole piece contacts the adsorption moisture of rear surface with air, while before roller bundle machine, remove positive active material particle and intergranular adsorption moisture and crystallization moisture in the lump at anode pole piece.
2, by negative electrode active material graphite, hard carbon, soft carbon etc., add in CMC solution and conducting solution, making after stirring becomes cathode size.
By the cathode size made, be coated on Copper Foil or copper mesh uniformly by negative pole coating machine, dry road prebake through coating machine, make and become negative pole one side pole piece containing negative electrode active material, conductive agent, binding agent, Copper Foil or copper mesh.
By the cathode size made, the area required according to different designs is evenly coated in the reverse side of the negative pole one side pole piece completed, and dries road prebake through negative pole coating machine, and the negative plate completing coating workshop section makes.
Complete the negative plate after the making of coating workshop section, adjustable by the one group of high temperature water scavenging system 60 DEG C ~ 130 DEG C being placed in rolling place of negative pole coating machine, removing cathode pole piece contacts the adsorption moisture of rear surface with air, while before roller bundle machine, remove anode active material particles and intergranular adsorption moisture and crystallization moisture in the lump at cathode pole piece.
3, install adjustable for one group of high temperature water scavenging system 60 DEG C ~ 130 DEG C at roller mill, full-automatic/semi-automatic pelleter respectively, both positive and negative polarity pole piece can be removed before roller is pricked, carry or deposit the moisture causing both positive and negative polarity pole piece to be adsorbed, and both positive and negative polarity pole piece water content is remained on below 30PPM; Remove both positive and negative polarity pole piece both positive and negative polarity active material particle and intergranular crystallization water after roller is pricked simultaneously, and its moisture is remained on below 30PPM.
Aforesaid operations makes to dry the both positive and negative polarity pole piece after road, roller bundle machine, full-automatic/semi-automatic pelleter when at the uniform velocity 1.5m/min ~ 12.0m/min advances through coating machine, positive/negative plate adsorption moisture content, between both positive and negative polarity active material particle and particle crystallization water content lower than below 30PPM, by controlling between active material particle and particle, the method for both positive and negative polarity pole piece adsorption moisture effectively can control the related physical property of pole piece 11, can effectively improve lithium ion battery combination property.
Claims (6)
1. improve a method for lithium ion battery plus-negative plate pole piece water content, adopt the high temperature water scavenging system of designed, designed, improve lithium ion battery plus-negative plate pole piece water content, it is characterized in that: it comprises following one or more step:
(1) after painting process, remove pole piece (11) by high temperature water scavenging system and to contact the adsorption moisture of rear surface and active material particle and intergranular adsorption moisture and crystallization moisture with air;
(2) after roll processing steps, remove pole piece (11) by high temperature water scavenging system and contact the adsorption moisture of rear surface and the step of active material particle and intergranular adsorption moisture and crystallization moisture with air;
(3) after film-making operation, remove pole piece (11) by high temperature water scavenging system and contact the adsorption moisture of rear surface and the step of active material particle and intergranular adsorption moisture and crystallization moisture with air;
Wherein, described high temperature water scavenging system comprises two de-watering apparatus being divided into the upper and lower both sides of pole piece (11), be positioned at the de-watering apparatus A(9 of pole piece (11) top) opening (3) be right against the upper surface of pole piece (11), be positioned at the de-watering apparatus B(10 of pole piece (11) below) opening (3) be right against the lower surface of pole piece (11);
Described de-watering apparatus comprises body (1) and is set in the outside shell (2) of body (1), body is provided with air blast chamber in (1), top, air blast chamber is provided with the opening (3) be communicated with hull outside, heater (4) is provided with in air blast chamber, the both sides being up and down positioned at heater (4) in air blast chamber are provided with one deck homogenating plate, air blast chamber is divided into air-inlet cavity (5) by two-layer homogenating plate, heating chamber (6) and air-out chamber (7), homogenating plate is distributed with air vent, body (1) is also provided with air inlet (8), air inlet (8) is communicated with air-inlet cavity (5).
2. a kind of method improving lithium ion battery plus-negative plate pole piece water content according to claim 1, it is characterized in that: described opening (3) is reverse V-shaped opening (3), edge is from air blast chamber to the direction that shell (2) is outside, and the draught area of opening (3) reduces gradually.
3. a kind of method improving lithium ion battery plus-negative plate pole piece water content according to claim 1, is characterized in that: described body (1) adopts the heat-barrier material that can block hot-fluid transmission to make.
4. a kind of method improving lithium ion battery plus-negative plate pole piece water content according to claim 1, is characterized in that: described shell (2) adopts stainless steel material to make.
5. a kind of method improving lithium ion battery plus-negative plate pole piece water content according to claim 1, it is characterized in that: described high temperature water scavenging system is removed pole piece and contacted the adsorption moisture of rear surface and the method for active material particle and intergranular adsorption moisture and crystallization moisture with air, specifically comprise the following steps: the air inlet (8) of the de-watering apparatus of high temperature water scavenging system is all connected with blower fan, the gas that blower fan is blown into enters air-inlet cavity (5) by air inlet (8), homogenating plate A(12 by being arranged between air-inlet cavity (5) and heating chamber (6)) evenly after, enter heating chamber (6), then by heater (4), the gas entering heating chamber (6) is heated, gas after heating is by the homogenating plate B(13 be arranged between heating chamber (6) and air-out chamber (7)) the even rear surface evenly being blown to pole piece (11) by opening (3), the adsorbed water and just on removing pole piece (11) surface, the crystallization water between anode active material particles and particle.
6. a kind of method improving lithium ion battery plus-negative plate pole piece water content according to claim 1, is characterized in that: described pole piece (11) is anode pole piece or cathode pole piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210531150.6A CN103017502B (en) | 2012-12-11 | 2012-12-11 | Dewatering system and method for improving water content of positive and negative electrode plates of batteries |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210531150.6A CN103017502B (en) | 2012-12-11 | 2012-12-11 | Dewatering system and method for improving water content of positive and negative electrode plates of batteries |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103017502A CN103017502A (en) | 2013-04-03 |
| CN103017502B true CN103017502B (en) | 2015-05-27 |
Family
ID=47966390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210531150.6A Active CN103017502B (en) | 2012-12-11 | 2012-12-11 | Dewatering system and method for improving water content of positive and negative electrode plates of batteries |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103017502B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109888269A (en) * | 2018-12-29 | 2019-06-14 | 广东邦普循环科技有限公司 | A kind of pretreated method of ternary material mixing |
| CN115025952B (en) * | 2022-07-20 | 2023-05-09 | 佛山市天劲新能源科技有限公司 | Vacuum baking production method and device for soft-package lithium battery |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2035746A (en) * | 1932-11-03 | 1936-03-31 | Electric Storage Battery Co | Machine for treating newly pasted storage battery plates |
| US2553192A (en) * | 1947-09-09 | 1951-05-15 | Gen Motors Corp | Method of curing positive storage battery plates |
| CN202180040U (en) * | 2011-04-22 | 2012-04-04 | 天津力神电池股份有限公司 | Position adjusting device for drying oven nozzle of coating machine |
| CN102423749A (en) * | 2011-12-27 | 2012-04-25 | 深圳市赢合科技股份有限公司 | Pole piece drying system of pole piece coating machine |
| CN202290500U (en) * | 2011-06-16 | 2012-07-04 | 赵宽 | Lithium ion battery pole piece coating machine with coating internal-heating drying method |
| CN202343426U (en) * | 2011-11-24 | 2012-07-25 | 深圳科雷拉能源科技有限公司 | Coater oven with adjustable air distributing devices |
| CN203013847U (en) * | 2012-12-11 | 2013-06-19 | 广汉禧丹佛纳米锂电池有限公司 | Dehydration device for improving water content of lithium ion battery positive and negative pole pieces |
-
2012
- 2012-12-11 CN CN201210531150.6A patent/CN103017502B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2035746A (en) * | 1932-11-03 | 1936-03-31 | Electric Storage Battery Co | Machine for treating newly pasted storage battery plates |
| US2553192A (en) * | 1947-09-09 | 1951-05-15 | Gen Motors Corp | Method of curing positive storage battery plates |
| CN202180040U (en) * | 2011-04-22 | 2012-04-04 | 天津力神电池股份有限公司 | Position adjusting device for drying oven nozzle of coating machine |
| CN202290500U (en) * | 2011-06-16 | 2012-07-04 | 赵宽 | Lithium ion battery pole piece coating machine with coating internal-heating drying method |
| CN202343426U (en) * | 2011-11-24 | 2012-07-25 | 深圳科雷拉能源科技有限公司 | Coater oven with adjustable air distributing devices |
| CN102423749A (en) * | 2011-12-27 | 2012-04-25 | 深圳市赢合科技股份有限公司 | Pole piece drying system of pole piece coating machine |
| CN203013847U (en) * | 2012-12-11 | 2013-06-19 | 广汉禧丹佛纳米锂电池有限公司 | Dehydration device for improving water content of lithium ion battery positive and negative pole pieces |
Non-Patent Citations (1)
| Title |
|---|
| 锂电池极片干燥箱风速场均匀特性研究;李徐佳等;《机械设计》;20110820;第28卷(第08期);77-81 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103017502A (en) | 2013-04-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7220360B2 (en) | Method for recovering positive electrode material, obtained positive electrode material and use thereof | |
| CN102751548B (en) | Method for recovering and preparing lithium iron phosphate from waste lithium iron phosphate battery | |
| CN103647073B (en) | A kind of anode material for lithium-ion batteries and preparation method thereof | |
| WO2017024720A1 (en) | Preparation method for high capacity lithium-ion battery negative electrode material | |
| CN111224187B (en) | Method for directly repairing and regenerating waste lithium iron phosphate battery positive electrode material | |
| CN104681782B (en) | A kind of lithium rechargeable battery composite positive pole and preparation method thereof | |
| CN103311496B (en) | The manufacture method of nonaqueous secondary battery electrode, non-aqueous secondary batteries and drying device | |
| CN110759341B (en) | Method for recycling graphite material based on aluminum-graphite double-ion battery | |
| CN103633312A (en) | Surface modified anode material for lithium ion battery and method | |
| CN111430677B (en) | Negative electrode material and preparation method thereof, negative electrode and lithium ion battery | |
| CN102916178B (en) | Preparation method of carbon cladding modified lithium manganate anode material | |
| CN107919460A (en) | Preparation method of modified anode material and lithium ion battery | |
| CN113437378A (en) | Method for recycling and reusing anode and cathode of waste battery | |
| CN114229816B (en) | Method for recycling and preparing anode material from waste lithium iron phosphate battery | |
| CN105789606A (en) | Preparation method of lithium titanate coated lithium ion battery nickel cobalt manganese cathode material | |
| CN102130359A (en) | Lithium sulfur battery and preparation method thereof | |
| CN107808954A (en) | A kind of lithium titanate cladding hard carbon composite and preparation method thereof | |
| CN110311130A (en) | A kind of titanium niobate negative electrode material and preparation method thereof | |
| CN103000874A (en) | Preparation method of carbon-coated ternary positive electrode material | |
| CN103017502B (en) | Dewatering system and method for improving water content of positive and negative electrode plates of batteries | |
| CN102709521A (en) | Lithium ion battery and anode thereof | |
| Sarkar et al. | Electrochemical-driven green recovery of lithium, graphite and cathode from lithium-ion batteries using water | |
| CN110165198A (en) | A kind of preparation method of the anode material for lithium-ion batteries of coated graphite alkene | |
| CN117393886A (en) | Method for regenerating and repairing graphite of negative electrode of waste lithium ion battery | |
| CN203013847U (en) | Dehydration device for improving water content of lithium ion battery positive and negative pole pieces |
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 |