JPH0479170A - Lithium cell - Google Patents
Lithium cellInfo
- Publication number
- JPH0479170A JPH0479170A JP2195717A JP19571790A JPH0479170A JP H0479170 A JPH0479170 A JP H0479170A JP 2195717 A JP2195717 A JP 2195717A JP 19571790 A JP19571790 A JP 19571790A JP H0479170 A JPH0479170 A JP H0479170A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- smashed
- carbon fibers
- heattreated
- under
- 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
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 15
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 14
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 8
- 239000004917 carbon fiber Substances 0.000 claims abstract description 8
- 238000002441 X-ray diffraction Methods 0.000 claims abstract description 4
- 230000001590 oxidative effect Effects 0.000 claims abstract description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- 239000012298 atmosphere Substances 0.000 claims description 2
- 238000010298 pulverizing process Methods 0.000 claims description 2
- 239000002245 particle Substances 0.000 abstract description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 8
- 229910052799 carbon Inorganic materials 0.000 abstract description 8
- 239000004809 Teflon Substances 0.000 abstract description 2
- 229920006362 Teflon® Polymers 0.000 abstract description 2
- 238000000498 ball milling Methods 0.000 abstract description 2
- 239000011230 binding agent Substances 0.000 abstract description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 abstract 2
- 230000002745 absorbent Effects 0.000 abstract 2
- 239000002250 absorbent Substances 0.000 abstract 2
- 229910052786 argon Inorganic materials 0.000 abstract 1
- 241000473391 Archosargus rhomboidalis Species 0.000 description 1
- 239000012300 argon atmosphere Substances 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000002641 lithium Chemical class 0.000 description 1
- 239000011255 nonaqueous electrolyte Substances 0.000 description 1
- 238000012856 packing 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
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は非水電解質リチウム電池に関するものであり、
特に放電特性、サイクル寿命特性に優れたリチウム電池
用負極に関するものである。[Detailed Description of the Invention] Industrial Application Field The present invention relates to a non-aqueous electrolyte lithium battery,
In particular, the present invention relates to a negative electrode for lithium batteries that has excellent discharge characteristics and cycle life characteristics.
従来技術とその問題点
炭素繊維成型体はサイクル寿命特性に優れている。しか
し、体積あたりの容量が小さいという欠点があった。こ
れを改善する為に、炭素繊維を粉砕して充填密度の高い
成型体の提案がある。しかしこの電極は、放を容量及び
サイクル寿命特性を低下させるという欠点がある。Prior art and its problems Carbon fiber molded bodies have excellent cycle life characteristics. However, there was a drawback that the capacity per volume was small. In order to improve this problem, there is a proposal to create a molded body with high packing density by crushing carbon fiber. However, this electrode has the disadvantage of reduced discharge capacity and cycle life characteristics.
発明の目的
本発明は上記従来の問題点に鑑みなされたものであり、
放電容量及びサイクル寿命特性の向上したリチウム電池
を提供することを目的とするものである。Purpose of the Invention The present invention has been made in view of the above-mentioned conventional problems.
The object of the present invention is to provide a lithium battery with improved discharge capacity and cycle life characteristics.
発明の構成
本発明は上記目的を達成するべく、
Ｘ線回折による格子面間隔（ｄ ００２ ’）が５．５
８〜５．５６人である炭素ＩＩＩＩ＆を粉砕後、非酸化
性雰囲気下で８００〜１５００℃で熱処理したものを成
型してリチウム吸蔵負極として用いたことを特徴とする
リチウム電池である。Structure of the Invention In order to achieve the above object, the present invention has a lattice spacing (d 002 ') determined by X-ray diffraction of 5.5.
This lithium battery is characterized in that carbon III& of 8 to 5.56 carbon atoms is pulverized, then heat-treated at 800 to 1500° C. in a non-oxidizing atmosphere, and then molded and used as a lithium storage negative electrode.
寮旌例 以下、本発明の詳細について一寮施例により説明する。dormitory example Hereinafter, details of the present invention will be explained using a single dormitory example.
繊維径約８声鯛、格子面間隔（ｄ ００２ ）が３．５
８〜３．５６人のピッチ系の炭素繊維をボールミ〜にか
けて、平均粒子径約２Ｐｗ１に粉砕した。粉砕後のカー
ボン粒子をアルゴン雰囲気中で、温度１０００℃で約２
時間加熱処理した。加熱処理したカーボン粒子９６ｖｔ
％、テフロンバインダーＡ ｖｔ％を混合した後、面積
１ｃＩ＋？、厚さ約０．１５−のＶ−）状の電極とした
・
電ＨＨｃＬｉ０１ｏ４１’Ｋ）ｌ／ｌ５Ｐｃ−ＤＩＥ、
対極にＬｉを用いて試験上〜を組み、充放電性能を調べ
た。Fiber diameter: approximately 8 tone sea bream, lattice spacing (d 002 ) is 3.5
Pitch-based carbon fibers of 8 to 3.56 people were pulverized to an average particle diameter of about 2Pw1 by ball milling. After grinding, the carbon particles are crushed in an argon atmosphere at a temperature of 1000℃ for about 2 hours.
Heat treated for hours. Heat treated carbon particles 96vt
%, after mixing Teflon binder A vt%, the area is 1 cI+? , a V-)-shaped electrode with a thickness of about 0.15 - HHcLi01o41'K)l/l5Pc-DIE,
Tests were assembled using Li as a counter electrode, and the charging and discharging performance was investigated.
第１図に充放電サイクルと放電容量の関係を示した。FIG. 1 shows the relationship between charge/discharge cycles and discharge capacity.
尚、電流密度１１ム１０！、Ｌ１ドープカット電圧０．
０３Ｖ、Ｌｉ脱ドープカット電圧ｉ、ｏｖで試験した。In addition, the current density is 11μ10! , L1 dope cut voltage 0.
03V, Li dedoping cut voltage i, ov.
従来品として、粉砕後のカーボン粒子に熱処理を加えな
い以外はすべて、前記と同様としたリチウム電池を用い
た。尚、粉砕後のカーボン粒子を６００℃で熱処理した
ものを用いたリチウム電池を電池Ｃとし、１８００℃で
熱処理したものを用いたリチウム電池を電池りとした。As a conventional product, a lithium battery was used, which was the same as above except that the carbon particles after pulverization were not subjected to heat treatment. A lithium battery using pulverized carbon particles heat-treated at 600° C. was designated as battery C, and a lithium battery using carbon particles heat-treated at 1800° C. was designated as battery C.
本発明はｔ池ム、従来品は電池Ｂである。The battery of the present invention is battery B, and the conventional product is battery B.
発明の効果
上述した如く、本発明は放電容量及びサイクル寿命特性
の向上したリチウム電池を提供することが出来るので、
その工業的価値は極めて大である。Effects of the Invention As described above, the present invention can provide a lithium battery with improved discharge capacity and cycle life characteristics.
Its industrial value is extremely large.
第１図は本発明の電池と従来品の電池の充放電サイクル
と放を容量の関係を示した図である。FIG. 1 is a diagram showing the relationship between charge/discharge cycles and discharge capacity of the battery of the present invention and a conventional battery.
Claims (1)
３．５６Åである炭素繊維を粉砕後、非酸化性雰囲気下
で熱処理したものを成型した電極をリチウム吸蔵負極と
して用いることを特徴とするリチウム電池。The lattice spacing (d002) by X-ray diffraction is 3.38~
A lithium battery characterized in that an electrode formed by pulverizing carbon fiber having a thickness of 3.56 Å and then heat-treating it in a non-oxidizing atmosphere is used as a lithium storage negative electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2195717A JPH0479170A (en) | 1990-07-23 | 1990-07-23 | Lithium cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2195717A JPH0479170A (en) | 1990-07-23 | 1990-07-23 | Lithium cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0479170A true JPH0479170A (en) | 1992-03-12 |
Family
ID=16345797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2195717A Pending JPH0479170A (en) | 1990-07-23 | 1990-07-23 | Lithium cell |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0479170A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0688057A1 (en) | 1994-06-15 | 1995-12-20 | Kabushiki Kaisha Toshiba | Lithium ion secondary battery |
| KR100463079B1 (en) * | 2002-11-06 | 2004-12-23 | 유비휴먼(주) | Method for preparation of cathode material of nickel-carbon nanofiber secondary battery using carbon nanofiber |
-
1990
- 1990-07-23 JP JP2195717A patent/JPH0479170A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0688057A1 (en) | 1994-06-15 | 1995-12-20 | Kabushiki Kaisha Toshiba | Lithium ion secondary battery |
| KR100463079B1 (en) * | 2002-11-06 | 2004-12-23 | 유비휴먼(주) | Method for preparation of cathode material of nickel-carbon nanofiber secondary battery using carbon nanofiber |
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