CN1151618A - Li second cell using carbon material as anode active material - Google Patents
Li second cell using carbon material as anode active material Download PDFInfo
- Publication number
- CN1151618A CN1151618A CN95118399A CN95118399A CN1151618A CN 1151618 A CN1151618 A CN 1151618A CN 95118399 A CN95118399 A CN 95118399A CN 95118399 A CN95118399 A CN 95118399A CN 1151618 A CN1151618 A CN 1151618A
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- China
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- graphite
- secondary battery
- active material
- lithium
- lithium secondary
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- 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
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- 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
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
A secondary lithium battery using carbon as active material of anode features that a mix-crystal carbon material between graphite crystal structure and amorphous carbon black structure is used as active material of anode, the metal oxide containing Li and Mn as cathode, the non-woven cloth of polypropylene as isolating diaphragm and the solution of lithium perchlorate as electrolyte. Its advantages include high specific capacity and low energy loss.
Description
The present invention relates to lithium secondary battery and method for making thereof.
Usually, lithium secondary battery be with lithium metal as anode material, be cathode material to contain lithium metal oxide, be that electrolyte is made lithium secondary battery with lithium perchlorate solution.
Because in lithium metal when operation, is dangerous, develop in succession with alloy and with the material with carbon element of a fixed structure as anode material, so development cost is cheap, technology is simple and well behaved active material of positive electrode is the key of this class battery.
It is raw material that J.ElectroChem.Soc.1993 (140) 315 has reported with the petroleum coke, makes active material of positive electrode through 700-2500 ℃ of heat treatment, the energy that this method consumption is a large amount of, the lithium secondary battery cost height of making.
The present invention has overcome the cost height, the shortcoming of consumes energy and a kind of lithium secondary battery that makes as active material of positive electrode with the crystallinity material with carbon element is provided.
Lithium secondary battery of the present invention comprises active material of positive electrode, negative electrode and electrolyte.
Active material of positive electrode of the present invention is with graphite, and amorphous carbon black is a raw material, a kind of material with carbon element with mixing crystal formation that obtains after mechanical mixture.
When adopting graphite to be active material of positive electrode, because graphite has layered crystal structure, little lithium ion " embedding " and " taking off embedding " difficulty of making of lithium ion diffusion coefficient in crystal layer, the lithium battery specific capacity that makes is low.When adopting the big amorphous carbon black of specific area to be active material of positive electrode, though the lithium ion diffusion velocity is fast, " taking off embedding " and " embedding " lithium ion invertibity is poor, and the lithium battery specific capacity that makes is also low.In order to improve the lithium battery specific capacity, according to above-mentioned two kinds of structures characteristics separately, the present invention adopts a kind of a kind of material with carbon element of crystal formation that mixes between crystal structure of graphite and amorphous carbon black structure as anode.With the metal oxide that contains lithium and manganese is negative electrode, makes barrier film with polypropylene non-woven fabric, and lithium perchlorate solution is electrolyte, is made into the model battery.Above-mentioned anode is that graphite and amorphous carbon black were carried out making in spheroidal graphite 4-10 hour by weight 100: 1～1: 100.Contain lithium and the manganese metal oxide cathode is a lithium ion source, after the charging, lithium ion embeds anode, but forms working battery, and capacity is measured in continuous discharge.In the anode active matter content, the specific capacity of different batteries is from 100～209mAhr./g.
Described graphite comprises native graphite and phosphorus graphite etc., and described amorphous carbon black-envelope is drawn together acetylene black and charcoal, and described electrolyte is the lithium perchlorate solution of propylene carbonate and glycol dimethyl ether dissolving.
Lithium secondary battery of the present invention has high specific capacity, and energy consumption is low, and cost is low.
Embodiment 1,
Native graphite 100 grams are mixed with acetylene black 1 gram, ball milling 4-10 hour, make anode strip with this mixture, the lithium perchlorate that dissolves with the mixed solvent of propylene carbonate and glycol dimethyl ether is an electrolyte, is negative electrode with the oxide of lithium and manganese, makes the model battery.Open circuit voltage is 3 volts after the battery charge, and final discharging voltage is 2 volts, discharge capacity: count 100mAhr./g with anode material.Embodiment 2,
Soil graphite 1 gram, acetylene black 100 grams are handled with the method for example 1, make the model battery with same condition.Discharge and recharge experiment and measure specific capacity.3 volts of open circuit voltages, specific capacity are 136mAhr./g.Embodiment 3,
Soil graphite 20 grams, acetylene black 50 grams are handled with example 1 method, make same model battery and discharge and recharge experiment, 3 volts of open circuit voltages, specific capacity 195mAhr./g.Embodiment 4,
Soil graphite 50 gram, acetylene black 50 grams with the processing of example 1 method and make same model battery, discharge and recharge experiment, 3 volts of open circuit voltages, specific capacity 112mAhr./g.Embodiment 5,
Soil graphite 30 grams, acetylene black 50 grams are handled with the method for example 1, make the same model battery, discharge and recharge experiment, 3 volts of open circuit voltages, specific capacity 209mAhr./g.
Claims (5)
1, a kind of lithium secondary battery comprises active material of positive electrode, negative electrode and electrolyte, the specific capacity that it is characterized in that described lithium secondary battery is 100-209mAhr./g, described active material of positive electrode is a kind of material with carbon element that mixes crystal formation between crystal structure of graphite and amorphous carbon black structure, described negative electrode is the metal oxide that contains lithium and manganese, and described electrolyte is lithium perchlorate solution.
2, lithium secondary battery according to claim 1 is characterized in that described graphite is native graphite.
3, lithium secondary battery according to claim 1 is characterized in that described graphite active material is a phosphorus graphite.
4, lithium secondary battery according to claim 1 is characterized in that described unformed carbon black is acetylene black or charcoal.
5, lithium secondary battery according to claim 1, the solvent that it is characterized in that described lithium perchlorate solution are propylene carbonate and glycol dimethyl ether mixed solvent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95118399A CN1151618A (en) | 1995-12-01 | 1995-12-01 | Li second cell using carbon material as anode active material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95118399A CN1151618A (en) | 1995-12-01 | 1995-12-01 | Li second cell using carbon material as anode active material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1151618A true CN1151618A (en) | 1997-06-11 |
Family
ID=5081701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95118399A Pending CN1151618A (en) | 1995-12-01 | 1995-12-01 | Li second cell using carbon material as anode active material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1151618A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1050940C (en) * | 1998-01-09 | 2000-03-29 | 浙江大学 | Carbon based composite material for cathode of lithium ion secondary battery and manufacture thereof |
| CN103460454A (en) * | 2011-03-30 | 2013-12-18 | 日本贵弥功株式会社 | Negative electrode active material, method for producing said negative electrode active material, and lithium-ion secondary battery using said negative electrode active material |
-
1995
- 1995-12-01 CN CN95118399A patent/CN1151618A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1050940C (en) * | 1998-01-09 | 2000-03-29 | 浙江大学 | Carbon based composite material for cathode of lithium ion secondary battery and manufacture thereof |
| CN103460454A (en) * | 2011-03-30 | 2013-12-18 | 日本贵弥功株式会社 | Negative electrode active material, method for producing said negative electrode active material, and lithium-ion secondary battery using said negative electrode active material |
| CN103460454B (en) * | 2011-03-30 | 2016-10-26 | 日本贵弥功株式会社 | Negative electrode active material, the manufacture method of this negative electrode active material and employ the lithium rechargeable battery of this negative electrode active material |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |