JPH03219566A - Electrode material for battery and manufacture thereof - Google Patents
Electrode material for battery and manufacture thereofInfo
- Publication number
- JPH03219566A JPH03219566A JP2015594A JP1559490A JPH03219566A JP H03219566 A JPH03219566 A JP H03219566A JP 2015594 A JP2015594 A JP 2015594A JP 1559490 A JP1559490 A JP 1559490A JP H03219566 A JPH03219566 A JP H03219566A
- Authority
- JP
- Japan
- Prior art keywords
- flame
- fibers
- cylindrical
- electrode material
- cellulose
- 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.)
- Granted
Links
- 239000007772 electrode material Substances 0.000 title claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 239000000835 fiber Substances 0.000 claims abstract description 26
- 239000004744 fabric Substances 0.000 claims abstract description 13
- 229920002678 cellulose Polymers 0.000 claims abstract description 7
- 239000001913 cellulose Substances 0.000 claims abstract description 7
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 7
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 4
- 238000010000 carbonizing Methods 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 8
- 230000001590 oxidative effect Effects 0.000 claims description 4
- 238000004080 punching Methods 0.000 abstract description 5
- 229920003043 Cellulose fiber Polymers 0.000 abstract description 3
- 229920000297 Rayon Polymers 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 239000002964 rayon Substances 0.000 abstract description 3
- 229920000049 Carbon (fiber) Polymers 0.000 abstract description 2
- 229920000742 Cotton Polymers 0.000 abstract description 2
- 239000004917 carbon fiber Substances 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 239000002243 precursor Substances 0.000 abstract description 2
- 230000002787 reinforcement Effects 0.000 abstract 1
- 238000003763 carbonization Methods 0.000 description 6
- BNOODXBBXFZASF-UHFFFAOYSA-N [Na].[S] Chemical compound [Na].[S] BNOODXBBXFZASF-UHFFFAOYSA-N 0.000 description 4
- 239000012779 reinforcing material Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 229920002239 polyacrylonitrile Polymers 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 230000037303 wrinkles Effects 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)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、電池、特にナトリウム−硫黄電池において使
用に供される電極材、及び、その製法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electrode material for use in batteries, particularly sodium-sulfur batteries, and a method for producing the same.
〔従来の技術〕□
従来、ナトリウム−硫黄電池の電極材としては、耐炎化
繊維の織物又は編物を非酸化性雰囲気中で熱処理し、得
られたものを円筒状に成形したものが使用されていた。[Prior art] □ Conventionally, as electrode materials for sodium-sulfur batteries, flame-resistant fiber woven or knitted fabrics are heat-treated in a non-oxidizing atmosphere and the resulting material is formed into a cylindrical shape. Ta.
このような従来の電極にあっては、織物又は編物におい
て、その構成する繊維の部分と、すき間の部分とが生じ
、その場合、圧力損失が繊維の部分とすき間の部分とで
異なるため、電池における液体の移動はすき間の部分に
集中することになる。この結果、いわゆる局部流れ（チ
ャンネリング）が生じ易くなる。In such conventional electrodes, the woven or knitted fabric has a fiber part and a gap part, and in this case, the pressure loss is different between the fiber part and the gap part, so the battery The movement of liquid will be concentrated in the gap. As a result, so-called local flow (channeling) is likely to occur.
このような不都合を解消するため、不織布をフェルト形
態で使用することが試みられた。しかし、フェルト形態
の平板は、これを（円）筒状に曲げようとすると、内側
に皺が寄ったり、外側に裂は目が生じたりして、内外層
の密度差が生じ、上記従来技術における織物や編物の場
合と同様に、局部流れの不都合を起こす。In order to overcome these inconveniences, attempts have been made to use nonwoven fabrics in the form of felt. However, when a flat plate in the form of felt is bent into a (cylindrical) shape, wrinkles appear on the inside and cracks appear on the outside, resulting in a density difference between the inner and outer layers. As in the case of woven and knitted fabrics, local flow problems occur.
本発明の目的は、従来技術にみる局部流れの不都合を解
消し、特にナトリウム−硫黄電池の電極材として極めて
高品質の筒状の電池用電極材を提供すること、及び、そ
の製法を提供することにある。The purpose of the present invention is to eliminate the disadvantages of local flow seen in the prior art and to provide an extremely high quality cylindrical battery electrode material, especially as an electrode material for sodium-sulfur batteries, and to provide a method for manufacturing the same. There is a particular thing.
本発明は下記のとおりである。 The present invention is as follows.
（１）乾伸度１０％以上を有する耐炎化繊維の不織布を
セルロース系の織物又は編物で補強して筒状となしたも
のを炭化してなる筒状の電池用電極材。(1) A cylindrical battery electrode material made by carbonizing a cylindrical shape made by reinforcing a flame-resistant fiber nonwoven fabric with a dry elongation of 10% or more with a cellulose-based woven or knitted fabric.
（２）乾伸度１０％以上を有する耐炎化繊維の不織布を
セルロース系の織物又は編物で補強して筒状となし、次
いで、その筒状物を非酸化性雰囲気中で熱処理して炭化
することを特徴とする筒状の電池用電極材の製法。(2) A nonwoven fabric made of flame-resistant fibers with a dry elongation of 10% or more is reinforced with cellulose-based woven or knitted fabric to form a cylinder, and then the cylinder is heat-treated in a non-oxidizing atmosphere to carbonize it. A method for manufacturing a cylindrical battery electrode material characterized by:
本発明では、炭素繊維の前駆体繊維たる耐炎化繊維を主
成分とせる筒状の均一な密度の不織布フェルトを作る。In the present invention, a cylindrical nonwoven felt having a uniform density is made, the main component being flame resistant fibers which are precursor fibers of carbon fibers.
本発明において耐炎化繊維は乾伸度が１０％以上のもの
である。In the present invention, the flame-resistant fiber has a dry elongation of 10% or more.
耐炎化繊維の乾伸度が１０％未満の場合、二ドルパンチ
ングにより剛直な繊維は容易に切断し、フェルトの厚さ
方向への絡み合いがなく層状を保ち難くなり、その結果
、フェルトの形成が困難となる。If the dry elongation of the flame-resistant fibers is less than 10%, the rigid fibers will be easily cut by double punching, and the felt will not become entangled in the thickness direction, making it difficult to maintain the layered structure. It becomes difficult.
引掛けられた繊維は厚み方向への絡み合いが容易となり
、性能の優れたフェルトを得ることができる。The hooked fibers are easily entangled in the thickness direction, making it possible to obtain a felt with excellent performance.
ニードルパンチング方式にて筒状の不織布フェルトを製
造することは一般の有機繊維では容易であるが、結節強
力の小さい繊維例えば耐炎化繊維では筒状物への成形が
難しい。そこで、本発明では、筒状にニードルパンチン
グを行いつつ層を重ねて行く初期の段階において、基布
としてセルロース系繊維、例えばレーヨン又は綿の織物
又は編物を補強材として耐炎化繊維のウェッブと重ねて
供給し、内層部の筒を成形する。Although it is easy to manufacture a cylindrical nonwoven felt using a needle punching method using ordinary organic fibers, it is difficult to form a cylindrical article using fibers with low knot strength, such as flame-resistant fibers. Therefore, in the present invention, in the initial stage of stacking layers while performing needle punching into a cylindrical shape, a woven or knitted fabric of cellulose fibers, such as rayon or cotton, is used as a base fabric and is layered with a web of flame-resistant fibers as a reinforcing material. to form the inner layer cylinder.
補強材としてセルロース系以外のものを用いると、炭化
後に残渣が生じ、電極材の品質に悪影響を与える。If a reinforcing material other than cellulose is used, a residue will be generated after carbonization, which will adversely affect the quality of the electrode material.
補強用のセルロース系繊維の基布は２ないし６層とし、
全体の重量の３％を超えない範囲にとどめるのがよい。The reinforcing cellulose fiber base fabric has 2 to 6 layers,
It is preferable to keep it within a range of no more than 3% of the total weight.
それは、次工程で炭素化した際に殆んど全部が焼けてし
まい、その結果、製品炭化物の性能に悪影響を与えない
配慮のためである。内層の成形に引続いて、同様にして
中層及び外層を成形する。この場合、セルロース系の織
物等による補強は内層のみとするのが好ましい。This is to ensure that almost all of the carbide is burned during carbonization in the next step, and as a result, the performance of the carbide product is not adversely affected. Following the molding of the inner layer, the middle and outer layers are molded in the same manner. In this case, it is preferable that only the inner layer be reinforced with a cellulose-based fabric or the like.
次いで、得られた筒状物を非酸化性雰囲気中、一般には
窒素ガス中にて熱処理して炭化を行う。Next, the obtained cylindrical material is heat-treated in a non-oxidizing atmosphere, generally nitrogen gas, to perform carbonization.
１０００℃以上、望ましくは２０００℃の熱処理を行う
ことにより、高品質の炭化繊維フェルト筒を安定的に得
ることができる。By performing heat treatment at 1000° C. or higher, preferably 2000° C., a high-quality carbonized fiber felt tube can be stably obtained.
本発明の筒状の電極材は、これを電池特にナトリウム−
硫黄電池に使用したとき、局部流れの不都合を生ずるこ
とのない高品質の電極材である。また、本発明の製法に
よると、このような高品質の電極材を安定的に効率よく
得ることができる。The cylindrical electrode material of the present invention can be used in batteries, especially sodium
This is a high-quality electrode material that does not cause local flow problems when used in sulfur batteries. Moreover, according to the manufacturing method of the present invention, such high-quality electrode materials can be stably and efficiently obtained.
実施例１
ポリアクリロニトリル（ＰＡＮ）系耐炎化繊維〔東邦レ
ーヨン株式会社製商品名パイロメックス■〕 ２デニー
ル、７５ｍｍ、乾伸度１８％のステープルを使用し、レ
ーヨンのネットを補強材に用いニードルパンチング方式
で筒状の不織布フェルトを作った。Example 1 Polyacrylonitrile (PAN) flame-resistant fiber [trade name: Pyromex ■ manufactured by Toho Rayon Co., Ltd.] Needle punching using a 2 denier, 75 mm, dry elongation staple of 18% and a rayon net as a reinforcing material A cylindrical nonwoven felt was made using this method.
炭化工程前は、外径９０ｍｌＴｌφ、内径５０ｎ＋ｍφ
、長さ１８ｆｌｎｍ 、重量的１５０ｇ／個であった。Before carbonization process, outer diameter 90mlTlφ, inner diameter 50n+mφ
, the length was 18 flnm, and the weight was 150 g/piece.
この筒状の不織布フェルトを窒素ガス中で２．０００℃
まで昇温し炭化した。This cylindrical nonwoven felt was heated to 2.000°C in nitrogen gas.
The temperature was raised to 100% and carbonized.
炭化工程後は外径７１ 、５ｍｍφ、内径３７．５ｍｍ
φ、長さ１６８ｍ１１、重量約８７．５ｇ／個であった
。After the carbonization process, the outer diameter is 71mm, 5mmφ, and the inner diameter is 37.5mm.
The diameter was 168 m11, and the weight was about 87.5 g/piece.
第１図は、炭化工程前における耐炎化繊維不織布フェル
トの筒状物の１例である。
第２図はナトリウム−硫黄電池の１例の断面図である。
符号の説明FIG. 1 is an example of a cylindrical article of flame-resistant fiber nonwoven felt before the carbonization process. FIG. 2 is a cross-sectional view of an example of a sodium-sulfur battery. Explanation of symbols
Claims (2)
セルロース系の織物又は編物で補強して筒状となしたも
のを炭化してなる筒状の電池用電極材。(1) A cylindrical battery electrode material made by carbonizing a cylindrical shape made by reinforcing a flame-resistant fiber nonwoven fabric with a dry elongation of 10% or more with a cellulose-based woven or knitted fabric.
セルロース系の織物又は編物で補強して筒状となし、次
いで、その筒状物を非酸化性雰囲気中で熱処理して炭化
することを特徴とする筒状の電池用電極材の製法。(2) A nonwoven fabric made of flame-resistant fibers with a dry elongation of 10% or more is reinforced with cellulose-based woven or knitted fabric to form a cylinder, and then the cylinder is heat-treated in a non-oxidizing atmosphere to carbonize it. A method for manufacturing a cylindrical battery electrode material characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015594A JP3010447B2 (en) | 1990-01-25 | 1990-01-25 | Electrode material for battery and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015594A JP3010447B2 (en) | 1990-01-25 | 1990-01-25 | Electrode material for battery and its manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03219566A true JPH03219566A (en) | 1991-09-26 |
| JP3010447B2 JP3010447B2 (en) | 2000-02-21 |
Family
ID=11893046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2015594A Expired - Fee Related JP3010447B2 (en) | 1990-01-25 | 1990-01-25 | Electrode material for battery and its manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3010447B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006049005A1 (en) * | 2004-11-04 | 2006-05-11 | Fuji Corporation | Precursor felt for electroconductive material for electrode and method for producing electroconductive material for electrode |
| JP2013177699A (en) * | 2012-02-02 | 2013-09-09 | Toa Kiko Kk | Carbonization raw sheet, method and apparatus for producing the same, and carbonized product |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018217237A1 (en) * | 2018-10-09 | 2020-04-09 | Sgl Carbon Se | Hollow cylindrical carbon fiber structure |
-
1990
- 1990-01-25 JP JP2015594A patent/JP3010447B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006049005A1 (en) * | 2004-11-04 | 2006-05-11 | Fuji Corporation | Precursor felt for electroconductive material for electrode and method for producing electroconductive material for electrode |
| JPWO2006049005A1 (en) * | 2004-11-04 | 2008-05-29 | 株式会社フジコー | Precursor felt material for electrode conductive material and method for producing electrode conductive material |
| US7501109B2 (en) | 2004-11-04 | 2009-03-10 | Fuji Corporation | Method for manufacturing an electric conductor for electrodes |
| JP4531768B2 (en) * | 2004-11-04 | 2010-08-25 | 株式会社フジコー | Precursor felt material for electrode conductive material and method for producing electrode conductive material |
| JP2013177699A (en) * | 2012-02-02 | 2013-09-09 | Toa Kiko Kk | Carbonization raw sheet, method and apparatus for producing the same, and carbonized product |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3010447B2 (en) | 2000-02-21 |
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