CN103337627A - Lithium-ion battery and lithium iron phosphate positive electrode material for same - Google Patents
Lithium-ion battery and lithium iron phosphate positive electrode material for same Download PDFInfo
- Publication number
- CN103337627A CN103337627A CN2013102348448A CN201310234844A CN103337627A CN 103337627 A CN103337627 A CN 103337627A CN 2013102348448 A CN2013102348448 A CN 2013102348448A CN 201310234844 A CN201310234844 A CN 201310234844A CN 103337627 A CN103337627 A CN 103337627A
- Authority
- CN
- China
- Prior art keywords
- iron phosphate
- lithium
- ion battery
- lithium iron
- phosphate positive
- 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.)
- Pending
Links
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 title claims abstract description 27
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 19
- 239000007774 positive electrode material Substances 0.000 title abstract 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 21
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000004698 Polyethylene Substances 0.000 claims abstract description 6
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 6
- 239000011246 composite particle Substances 0.000 claims abstract description 6
- 229910052742 iron Inorganic materials 0.000 claims abstract description 6
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims abstract description 6
- 239000010450 olivine Substances 0.000 claims abstract description 6
- 229910052609 olivine Inorganic materials 0.000 claims abstract description 6
- 239000002245 particle Substances 0.000 claims abstract description 6
- -1 polyethylene Polymers 0.000 claims abstract description 6
- 229920000573 polyethylene Polymers 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims abstract description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 19
- 229910052493 LiFePO4 Inorganic materials 0.000 claims description 10
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 5
- 239000010936 titanium Substances 0.000 claims description 5
- 229910052719 titanium Inorganic materials 0.000 claims description 5
- 229910052720 vanadium Inorganic materials 0.000 claims description 5
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 5
- 238000007599 discharging Methods 0.000 abstract 2
- ZTOZIUYGNMLJES-UHFFFAOYSA-K [Li+].[C+4].[Fe+2].[O-]P([O-])([O-])=O Chemical compound [Li+].[C+4].[Fe+2].[O-]P([O-])([O-])=O ZTOZIUYGNMLJES-UHFFFAOYSA-K 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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)
- Secondary Cells (AREA)
Abstract
The invention provides a lithium-ion battery and a lithium iron phosphate positive electrode material for the same. The positive electrode material is spherical carbon-lithium iron phosphate composite particles synthesised from nanometre lithium iron phosphate with an olivine structure by taking iron trichloride as an iron source, taking polyethylene as a reducer, and adding excessive carbon powder into the raw materials, wherein the particle diameter is 500-700 nanometres, and the discharging capacity is 150 mAh/g. Compared with the prior art, the positive electrode material provided by the invention is capable of increasing the capacity of the lithium-ion battery, and improving the circulation performance and charging-discharging performance of the lithium-ion battery.
Description
Technical field
The present invention relates to a kind of lithium ion battery and lithium iron phosphate positive material thereof.
Background technology
In the numerous electronic products of lithium ion battery extensive use, its volume is less, do not discharge and recharge memory effect, therefore is subjected to the extensively joyous drink in market.Yet the off-capacity of present lithium ion battery especially in smart mobile phone, often influences market prospects owing to stand-by time is undesirable.
Summary of the invention
The technical problem that the present invention mainly solves is the off-capacity of present lithium ion battery.
In order to solve the problems of the technologies described above, the embodiment of the invention discloses a kind of lithium iron phosphate positive material for lithium ion battery, described positive electrode is the nano-grade lithium iron phosphate with olivine structural, it is source of iron with the ferric trichloride, be reducing agent with the polyethylene, add the synthetic spherical carbon LiFePO4 composite particles of excess toner in raw material, particle diameter is the 500-700 nanometer, and discharge capacity is 150mAh/g.
In a preferred embodiment of the present invention, in the described lithium iron phosphate positive material, carbon is the carbon film that is wrapped in carbon LiFePO4 surface.
In a preferred embodiment of the present invention, described lithium iron phosphate positive material also is doped with titanium or vanadium.
In order to solve the problems of the technologies described above, the embodiment of the invention discloses a kind of lithium ion battery, it comprises positive pole, described positive electrode is the nano-grade lithium iron phosphate with olivine structural, it is source of iron with the ferric trichloride, is reducing agent with the polyethylene, adds the synthetic spherical carbon LiFePO4 composite particles of excess toner in raw material, particle diameter is the 500-700 nanometer, and discharge capacity is 150mAh/g.
In a preferred embodiment of the present invention, in the described lithium iron phosphate positive material, carbon is the carbon film that is wrapped in carbon LiFePO4 surface.
In a preferred embodiment of the present invention, described lithium iron phosphate positive material also is doped with titanium or vanadium.
Compared to prior art, described positive electrode of the present invention can improve the capacity of lithium ion battery, improves its cycle performance and charge-discharge performance.
Embodiment
To the technical scheme in the embodiment of the invention be clearly and completely described below, obviously, described embodiment only is a part of embodiment of the present invention, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making all other embodiment that obtain under the creative work prerequisite.
In order to solve the problems of the technologies described above, the embodiment of the invention discloses a kind of lithium iron phosphate positive material for lithium ion battery, described positive electrode is the nano-grade lithium iron phosphate with olivine structural, it is source of iron with the ferric trichloride, be reducing agent with the polyethylene, add the synthetic spherical carbon LiFePO4 composite particles of excess toner in raw material, particle diameter is the 500-700 nanometer, and discharge capacity is 150mAh/g.
In a preferred embodiment of the present invention, in the described lithium iron phosphate positive material, carbon is the carbon film that is wrapped in carbon LiFePO4 surface.
In a preferred embodiment of the present invention, described lithium iron phosphate positive material also is doped with titanium or vanadium.
In order to solve the problems of the technologies described above, the embodiment of the invention discloses a kind of lithium ion battery, it comprises positive pole, described positive electrode is the nano-grade lithium iron phosphate with olivine structural, it is source of iron with the ferric trichloride, is reducing agent with the polyethylene, adds the synthetic spherical carbon LiFePO4 composite particles of excess toner in raw material, particle diameter is the 500-700 nanometer, and discharge capacity is 150mAh/g.
In a preferred embodiment of the present invention, in the described lithium iron phosphate positive material, carbon is the carbon film that is wrapped in carbon LiFePO4 surface.
In a preferred embodiment of the present invention, described lithium iron phosphate positive material also is doped with titanium or vanadium.
Compared to prior art, described lithium iron phosphate positive material of the present invention can improve the capacity of lithium ion battery, improves its cycle performance and charge-discharge performance.
The above only is embodiments of the invention; be not so limit claim of the present invention; every equivalent structure or equivalent flow process conversion that utilizes description of the present invention to do; or directly or indirectly be used in other relevant technical field, all in like manner be included in the scope of patent protection of the present invention.
Claims (4)
1. lithium iron phosphate positive material that is used for lithium ion battery, it is characterized in that, described positive electrode is the nano-grade lithium iron phosphate with olivine structural, it is source of iron with the ferric trichloride, be reducing agent with the polyethylene, add the synthetic spherical carbon LiFePO4 composite particles of excess toner in raw material, particle diameter is the 500-700 nanometer, and discharge capacity is 150mAh/g.
2. the lithium iron phosphate positive material for lithium ion battery according to claim 1 is characterized in that, in the described lithium iron phosphate positive material, carbon is the carbon film that is wrapped in carbon LiFePO4 surface.
3. the lithium iron phosphate positive material for lithium ion battery according to claim 1 is characterized in that, described lithium iron phosphate positive material also is doped with titanium or vanadium.
4. a lithium ion battery is characterized in that, comprises the arbitrary described lithium iron phosphate positive material of claim 1-3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102348448A CN103337627A (en) | 2013-06-14 | 2013-06-14 | Lithium-ion battery and lithium iron phosphate positive electrode material for same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102348448A CN103337627A (en) | 2013-06-14 | 2013-06-14 | Lithium-ion battery and lithium iron phosphate positive electrode material for same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103337627A true CN103337627A (en) | 2013-10-02 |
Family
ID=49245754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102348448A Pending CN103337627A (en) | 2013-06-14 | 2013-06-14 | Lithium-ion battery and lithium iron phosphate positive electrode material for same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103337627A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101834287A (en) * | 2009-03-11 | 2010-09-15 | 五邑大学 | Preparation method of anode material of lithium ion battery |
| CN102208627A (en) * | 2011-05-11 | 2011-10-05 | 华南理工大学 | Method for preparing LiFePO4/C composite anode material by spray drying |
-
2013
- 2013-06-14 CN CN2013102348448A patent/CN103337627A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101834287A (en) * | 2009-03-11 | 2010-09-15 | 五邑大学 | Preparation method of anode material of lithium ion battery |
| CN102208627A (en) * | 2011-05-11 | 2011-10-05 | 华南理工大学 | Method for preparing LiFePO4/C composite anode material by spray drying |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHENG YULIN Free format text: FORMER OWNER: SUZHOU NUOXIN INNOVATION ENERGY CO., LTD. Effective date: 20140403 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 215121 SUZHOU, JIANGSU PROVINCE TO: 518052 SHENZHEN, GUANGDONG PROVINCE |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20140403 Address after: 518052 room 217, West Tower, Nanshan digital culture industry base, Shenzhen, Nanshan District, Guangdong Applicant after: Zheng Yulin Address before: 215121, No. 3, Jinling West Road, 288 Town, Suzhou Industrial Park, Jiangsu Province, 309 Applicant before: Suzhou Nuoxin Innovation Energy Co., Ltd. |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131002 |