CN106384855A - Recovery method of waste lithium iron phosphate positive electrode material - Google Patents
Recovery method of waste lithium iron phosphate positive electrode material Download PDFInfo
- Publication number
- CN106384855A CN106384855A CN201610947213.4A CN201610947213A CN106384855A CN 106384855 A CN106384855 A CN 106384855A CN 201610947213 A CN201610947213 A CN 201610947213A CN 106384855 A CN106384855 A CN 106384855A
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- China
- Prior art keywords
- iron phosphate
- lithium
- lithium iron
- positive electrode
- active material
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Classifications
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- 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
- H01M10/54—Reclaiming serviceable parts of waste accumulators
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B26/00—Obtaining alkali, alkaline earth metals or magnesium
- C22B26/10—Obtaining alkali metals
- C22B26/12—Obtaining lithium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/001—Dry processes
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/84—Recycling of batteries or fuel cells
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention relates to a recovery method of a waste lithium iron phosphate positive electrode material. The method comprises the following steps: carrying out high-temperature calcination on a waste lithium iron phosphate positive electrode plate until the lithium iron phosphate active substance and current collector aluminum foil fall off, and screening to obtain the lithium iron phosphate active substance; and mixing the obtained lithium iron phosphate active substance with graphite, carrying out ball milling by using ethanol as a medium, and drying to obtain the lithium iron phosphate precursor mixture. The iron element of the lithium iron phosphate in the waste lithium iron phosphate positive electrode material can be easily oxidized into iron oxide in the battery use process and high-temperature sintering process, so that the properties of the lithium iron phosphate positive electrode material decrease. The scheme is simple and feasible: the oxidized part in the waste lithium iron phosphate positive electrode material is reduced, thereby achieving the goal of regenerating and reutilizing the waste lithium iron phosphate positive electrode material.
Description
Technical field
The present invention relates to electrokinetic cell recovery technology field, specially a kind of recovery side of waste lithium iron phosphate positive electrode
Method.
Background technology
Lithium ion battery have have extended cycle life, specific energy height, discharging voltage balance, small volume, memory-less effect etc. excellent
Point.Lithium ion battery can use in fields such as portable set, satellite, redundant electrical power, electric automobiles, has wide development
Prospect.The enforcement of China 863 new-energy automobile key special subjects is it is anticipated that the marketization of China's electric motor car and industrialization will be very
Near next.In recent years, based on the exploitation to regenerative resource, huge demand will be had to energy storage device.
LiFePO4 has the advantages that safe and environment-friendly, good stability, specific capacity be high, low price is it is considered to be power electric
Important candidate's positive electrode in pond and energy-storage battery.Therefore, the market potential of ferric phosphate lithium cell is very huge.Permissible
It is envisioned that the yield of LiFePO 4 material and usage amount will be substantially improved.So, the recovery of waste lithium iron phosphate battery also has
Greatly meaning, not only contributes to the protection of environment, is more beneficial for the recycling of resource.
Content of the invention
The invention provides a kind of recovery method of waste lithium iron phosphate positive electrode, method simple by waste and old phosphorus
Sour iron lithium makes recycling ferric lithium phosphate precursor mixture, and this method is to be realized using following scheme:
A kind of recovery method of waste lithium iron phosphate positive electrode, comprises the steps,
Step one, by waste lithium iron phosphate positive plate high-temperature calcination so that lithium-iron phosphate active material and current collector aluminum foil
Come off, then screening obtains lithium-iron phosphate active material；
Step 2, lithium-iron phosphate active material is mixed by the lithium-iron phosphate active material obtaining with graphite, and with ethanol
For medium, carry out ball milling, then dry, obtain ferric lithium phosphate precursor mixture.
Preferably, in step one, LiFePO4 calcining heat is 600～800 DEG C.
Preferably, in step 2, lithium-iron phosphate active material is 1 with the mol ratio of graphite:0.3～0.5.
In the present invention, in waste lithium iron phosphate positive electrode the ferro element of LiFePO4 battery use during and
Be easily oxidized to iron oxide during high temperature sintering so that lithium iron phosphate positive material performance reduce, the present invention scheme simple
Easy by the oxidized partial reduction in waste lithium iron phosphate positive electrode, reached waste lithium iron phosphate positive electrode again
The purpose made profits.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not used to
Limit the present invention.
Embodiment 1
Under conditions of the iron phosphate lithium positive pole being recovered to piece is placed in 800 DEG C calcining so that lithium-iron phosphate active material with
Current collector aluminum foil comes off, and then screening obtains lithium-iron phosphate active material.
By lithium-iron phosphate active material and graphite with 1：0.5 mixing is scattered in ethanol, carries out ball milling, dries after ball milling 4h
Dry, obtain ferric lithium phosphate precursor mixture.
Embodiment 2
Under conditions of the iron phosphate lithium positive pole being recovered to piece is placed in 900 DEG C calcining so that lithium-iron phosphate active material with
Current collector aluminum foil comes off, and then screening obtains lithium-iron phosphate active material.
By lithium-iron phosphate active material and graphite with 1:0.4 mixing is scattered in ethanol, carries out ball milling, dries after ball milling 4h
Dry, obtain ferric lithium phosphate precursor mixture.
Embodiment 3
Under conditions of the iron phosphate lithium positive pole being recovered to piece is placed in 600 DEG C calcining so that lithium-iron phosphate active material with
Current collector aluminum foil comes off, and then screening obtains lithium-iron phosphate active material.
By lithium-iron phosphate active material and graphite with 1:0.3 mixing is scattered in ethanol, carries out ball milling, dries after ball milling 4h
Dry, obtain ferric lithium phosphate precursor mixture.
Embodiment 4
Calculate mass change again before and after ball milling for embodiment 1,2,3 iron phosphate powder, alleviate 4.2% respectively,
3.9%th, 4.1%.
The ferric lithium phosphate precursor that embodiment 1,2,3 is obtained makes the ferric phosphate lithium cell of regeneration, and its battery holds
Measure 99.7% of the capacity for non-renewable utilization ferric phosphate lithium cell, the capacitance of LiFePO4 than directly secondary using waste and old phosphorus
The capacitance of the secondary cell that sour iron lithium anode material is made is high by 30%.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any those familiar with the art the invention discloses technical scope in, the change or replacement that can readily occur in,
All should be included within the scope of the present invention.Therefore, protection scope of the present invention should be with scope of the claims
It is defined.
Claims (5)
1. a kind of recovery method of waste lithium iron phosphate positive electrode is it is characterised in that comprise the steps,
Step one, by waste lithium iron phosphate positive plate high-temperature calcination so that lithium-iron phosphate active material is come off with current collector aluminum foil,
Then screening obtains lithium-iron phosphate active material；
Step 2, lithium-iron phosphate active material is mixed by the lithium-iron phosphate active material obtaining with graphite, and with ethanol for being situated between
Matter, carries out ball milling, then dries, and obtains ferric lithium phosphate precursor mixture.
2. a kind of recovery method of waste lithium iron phosphate positive electrode according to claim 1 is it is characterised in that step one
In, LiFePO4 calcining heat is 600～900 DEG C.
3. a kind of recovery method of waste lithium iron phosphate positive electrode according to claim 1 and 2 is it is characterised in that walk
In rapid two, lithium-iron phosphate active material is 1 with the mol ratio of graphite:0.3～0.5.
4. a kind of recovery method of waste lithium iron phosphate positive electrode according to claim 3 is it is characterised in that step 2
In, lithium-iron phosphate active material is 1 with the mol ratio of graphite:0.3、1:0.4、1:0.5.
5. a kind of recovery method of waste lithium iron phosphate positive electrode according to claim 3 is it is characterised in that step 2
In, lithium-iron phosphate active material is 4h with the time of graphite ball milling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610947213.4A CN106384855A (en) | 2016-10-26 | 2016-10-26 | Recovery method of waste lithium iron phosphate positive electrode material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610947213.4A CN106384855A (en) | 2016-10-26 | 2016-10-26 | Recovery method of waste lithium iron phosphate positive electrode material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106384855A true CN106384855A (en) | 2017-02-08 |
Family
ID=57958348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610947213.4A Pending CN106384855A (en) | 2016-10-26 | 2016-10-26 | Recovery method of waste lithium iron phosphate positive electrode material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106384855A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107819121A (en) * | 2017-10-27 | 2018-03-20 | 重庆特瑞新能源材料有限公司 | A kind of LiFePO 4 activity regenerating method |
| CN111088432A (en) * | 2020-02-16 | 2020-05-01 | 成都其其小数科技有限公司 | Method for efficiently recycling waste lithium battery cathode material in leaching manner |
| CN111276767A (en) * | 2018-12-04 | 2020-06-12 | 荆门市格林美新材料有限公司 | Recovery method of waste lithium iron phosphate battery |
| CN113083848A (en) * | 2021-03-10 | 2021-07-09 | 深圳清研装备科技有限公司 | Sorting and recycling method for positive and negative electrode materials of waste lithium iron phosphate batteries |
| CN113161524A (en) * | 2021-04-19 | 2021-07-23 | 东北师范大学 | Composite positive electrode material obtained by utilizing waste lithium iron phosphate batteries and method and application thereof |
| CN113904021A (en) * | 2021-11-10 | 2022-01-07 | 苏州博萃循环科技有限公司 | Recycling method of waste lithium ion battery anode material and lithium ion battery anode material |
| CN114824549A (en) * | 2022-05-13 | 2022-07-29 | 浙江大学 | Method for selectively recovering valuable metal elements from waste lithium ion batteries |
| WO2023245898A1 (en) * | 2022-06-24 | 2023-12-28 | 广东邦普循环科技有限公司 | Method for recycling spent lithium iron phosphate batteries |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101847763A (en) * | 2010-04-09 | 2010-09-29 | 奇瑞汽车股份有限公司 | Comprehensive recovering method of waste lithium iron phosphate battery |
| CN102208706A (en) * | 2011-05-04 | 2011-10-05 | 合肥国轩高科动力能源有限公司 | Recycling treatment method of waste and old lithium iron phosphate battery anode materials |
| CN102956936A (en) * | 2011-08-25 | 2013-03-06 | 深圳市格林美高新技术股份有限公司 | Method for treating lithium iron phosphate cathode material of waste and old power lithium battery of automobile |
| EP2975686A1 (en) * | 2014-07-15 | 2016-01-20 | Lars Walch GmbH & Co. KG | Recycling method |
-
2016
- 2016-10-26 CN CN201610947213.4A patent/CN106384855A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101847763A (en) * | 2010-04-09 | 2010-09-29 | 奇瑞汽车股份有限公司 | Comprehensive recovering method of waste lithium iron phosphate battery |
| CN102208706A (en) * | 2011-05-04 | 2011-10-05 | 合肥国轩高科动力能源有限公司 | Recycling treatment method of waste and old lithium iron phosphate battery anode materials |
| CN102956936A (en) * | 2011-08-25 | 2013-03-06 | 深圳市格林美高新技术股份有限公司 | Method for treating lithium iron phosphate cathode material of waste and old power lithium battery of automobile |
| EP2975686A1 (en) * | 2014-07-15 | 2016-01-20 | Lars Walch GmbH & Co. KG | Recycling method |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107819121A (en) * | 2017-10-27 | 2018-03-20 | 重庆特瑞新能源材料有限公司 | A kind of LiFePO 4 activity regenerating method |
| CN111276767A (en) * | 2018-12-04 | 2020-06-12 | 荆门市格林美新材料有限公司 | Recovery method of waste lithium iron phosphate battery |
| CN111276767B (en) * | 2018-12-04 | 2021-04-13 | 荆门市格林美新材料有限公司 | Recovery method of waste lithium iron phosphate battery |
| CN111088432A (en) * | 2020-02-16 | 2020-05-01 | 成都其其小数科技有限公司 | Method for efficiently recycling waste lithium battery cathode material in leaching manner |
| CN113083848A (en) * | 2021-03-10 | 2021-07-09 | 深圳清研装备科技有限公司 | Sorting and recycling method for positive and negative electrode materials of waste lithium iron phosphate batteries |
| CN113161524A (en) * | 2021-04-19 | 2021-07-23 | 东北师范大学 | Composite positive electrode material obtained by utilizing waste lithium iron phosphate batteries and method and application thereof |
| CN113161524B (en) * | 2021-04-19 | 2024-04-26 | 东北师范大学 | Composite positive electrode material obtained by utilizing waste lithium iron phosphate battery, and method and application thereof |
| CN113904021A (en) * | 2021-11-10 | 2022-01-07 | 苏州博萃循环科技有限公司 | Recycling method of waste lithium ion battery anode material and lithium ion battery anode material |
| CN114824549A (en) * | 2022-05-13 | 2022-07-29 | 浙江大学 | Method for selectively recovering valuable metal elements from waste lithium ion batteries |
| WO2023245898A1 (en) * | 2022-06-24 | 2023-12-28 | 广东邦普循环科技有限公司 | Method for recycling spent lithium iron phosphate batteries |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170208 |