JPH01130464A - Separator for battery - Google Patents
Separator for batteryInfo
- Publication number
- JPH01130464A JPH01130464A JP62289785A JP28978587A JPH01130464A JP H01130464 A JPH01130464 A JP H01130464A JP 62289785 A JP62289785 A JP 62289785A JP 28978587 A JP28978587 A JP 28978587A JP H01130464 A JPH01130464 A JP H01130464A
- Authority
- JP
- Japan
- Prior art keywords
- chitin
- separator
- sheet
- fibril
- alkaline
- 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
- 229920002101 Chitin Polymers 0.000 claims abstract description 29
- 239000000835 fiber Substances 0.000 claims abstract description 28
- 239000003792 electrolyte Substances 0.000 abstract description 15
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 239000003513 alkali Substances 0.000 abstract description 6
- 239000011230 binding agent Substances 0.000 abstract description 6
- -1 amino polysaccharide Chemical class 0.000 abstract description 4
- 241000238424 Crustacea Species 0.000 abstract description 2
- 230000006835 compression Effects 0.000 abstract description 2
- 238000007906 compression Methods 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 238000000465 moulding Methods 0.000 abstract description 2
- 102000004169 proteins and genes Human genes 0.000 abstract description 2
- 108090000623 proteins and genes Proteins 0.000 abstract description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 3
- 229920001282 polysaccharide Polymers 0.000 abstract 2
- 239000005017 polysaccharide Substances 0.000 abstract 2
- 235000002918 Fraxinus excelsior Nutrition 0.000 abstract 1
- 241000500891 Insecta Species 0.000 abstract 1
- 238000010306 acid treatment Methods 0.000 abstract 1
- 239000002956 ash Substances 0.000 abstract 1
- 150000004676 glycans Chemical class 0.000 abstract 1
- 229920001661 Chitosan Polymers 0.000 description 7
- 230000006196 deacetylation Effects 0.000 description 7
- 238000003381 deacetylation reaction Methods 0.000 description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 description 6
- 239000004372 Polyvinyl alcohol Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 229920002451 polyvinyl alcohol Polymers 0.000 description 5
- 229920000742 Cotton Polymers 0.000 description 4
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 description 4
- 229910052748 manganese Inorganic materials 0.000 description 4
- 239000011572 manganese Substances 0.000 description 4
- NDVLTYZPCACLMA-UHFFFAOYSA-N silver oxide Chemical compound [O-2].[Ag+].[Ag+] NDVLTYZPCACLMA-UHFFFAOYSA-N 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 3
- 239000002250 absorbent Substances 0.000 description 3
- 230000002745 absorbent Effects 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229920003043 Cellulose fiber Polymers 0.000 description 2
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 2
- 239000012670 alkaline solution Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 2
- 230000001112 coagulating effect Effects 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 229910001923 silver oxide Inorganic materials 0.000 description 2
- SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical compound O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 description 1
- 229920002488 Hemicellulose Polymers 0.000 description 1
- 241000238631 Hexapoda Species 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 229920002978 Vinylon Polymers 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 239000006183 anode active material Substances 0.000 description 1
- 239000006182 cathode active material Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000008282 halocarbons Chemical class 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 239000010875 treated wood Substances 0.000 description 1
- YNJBWRMUSHSURL-UHFFFAOYSA-N trichloroacetic acid Chemical compound OC(=O)C(Cl)(Cl)Cl YNJBWRMUSHSURL-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/411—Organic material
- H01M50/429—Natural polymers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/411—Organic material
- H01M50/414—Synthetic resins, e.g. thermoplastics or thermosetting resins
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0002—Aqueous electrolytes
- H01M2300/0014—Alkaline electrolytes
-
- 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
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Cell Separators (AREA)
Abstract
Description
【発明の詳細な説明】
(産業上の利用分野)
本発明は、電池用セパレータに関するものであり、さら
に詳しくはアルカリ・マンガン電池、酸化銀電池、水銀
電池、ニッケル・カドミウム電池等のようなアルカリ電
解液を用いる乾電池用に特に好適な電池用セパレータに
関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a separator for batteries, and more specifically to alkaline separators such as alkaline manganese batteries, silver oxide batteries, mercury batteries, nickel cadmium batteries, etc. The present invention relates to a battery separator particularly suitable for dry batteries using electrolyte.
(従来の技術)
電池用セパレータは、電池内の電解物質である陽極活物
質と陰極活物質とを隔離することを目的に陽極と陰極の
中間に介在させるものであるが。(Prior Art) A battery separator is interposed between an anode and a cathode for the purpose of separating the anode active material and the cathode active material, which are electrolytic substances in the battery.
セパレータ自身は両極活物質を有効に隔離する機能に加
え、電解物質を十分に吸蔵保有し、効果的に化学反応を
促進させ3両極間のイオン伝導を円滑に進行させること
ができなければならない。In addition to the function of effectively isolating the active materials of both electrodes, the separator itself must be capable of absorbing and retaining a sufficient amount of electrolyte, effectively promoting chemical reactions, and smoothly promoting ionic conduction between the three electrodes.
したがって、セパレータとしてはアルカリ液に抵抗力が
ある化学繊維や合成繊維からなる紙と。Therefore, paper made of chemical fibers or synthetic fibers that are resistant to alkaline liquid is used as a separator.
電解液の吸収性に優れた吸収性の紙を併用することによ
って、その機能を満足させているのが現状である。アル
カリ液に抵抗力がある紙としてはポリアミド、ポリビニ
ルアルコールあるいはポリプロピレンの不織布が、電解
液の吸収性に優れた吸収性の紙としてはコツトンリンタ
ーバルブのシートの積層物が一般に使用されている。さ
らに、最近では、ポリビニルアルコール繊維やポリプロ
ピレン繊維と天然繊維とのブレンド物を抄紙してセパレ
ータとして使用することも試みられている。Currently, this function is satisfied by using absorbent paper that is excellent in absorbing electrolyte. Nonwoven fabrics of polyamide, polyvinyl alcohol, or polypropylene are commonly used as papers that are resistant to alkaline liquids, and laminates of cotton linter valve sheets are commonly used as absorbent papers that are highly absorbent of electrolyte liquids. Furthermore, recently, attempts have been made to make paper from a blend of polyvinyl alcohol fiber or polypropylene fiber and natural fiber and use it as a separator.
(特開昭61−39451号公報、特開昭61−128
460号公報参照)
(発明が解決しようとする問題点)
一般にアルカリ電池用セパレークとし°ζは1種々の性
能が要求されるが、なかでも電解液の吸収性がよいこと
は大切なことである。(JP-A-61-39451, JP-A-61-128)
(See Publication No. 460) (Problems to be Solved by the Invention) In general, a separator for alkaline batteries is required to have various performances, but among them, good electrolyte absorption is important. .
しかしながら、従来のセパレータは電解液、どくにアル
カリ電解液の吸収能力が必ずしも満足すべきものでなく
、急放電性能、連袂放電性能、写真閃光用充電性能等の
性能をさらに向上させたい場合には問題があった。However, the absorption capacity of conventional separators for electrolytes and alkaline electrolytes is not necessarily satisfactory, and there are problems when it is desired to further improve performance such as rapid discharge performance, continuous discharge performance, and charging performance for photographic flash. was there.
本発明は、アルカリ電解液の吸収能力が優れた電池用セ
パレータを提供することを目的とするものである。An object of the present invention is to provide a battery separator that has an excellent ability to absorb alkaline electrolyte.
(問題点を解決するための手段)
本発明者らは、上記のような問題のない電池用セパレー
タを開発すべく鋭意研究を重ねた結果。(Means for Solving the Problems) The present inventors have conducted extensive research to develop a battery separator that is free from the problems described above.
キチンの繊維やフィブリルからなるシートが上記の目的
を達成し得ることを見出し2本発明に到達した。The inventors have discovered that a sheet made of chitin fibers or fibrils can achieve the above objects, and have thus arrived at the present invention.
すなわち9本発明は、キチン繊維からなるシート又はキ
チンフィブリルからなるシートよりなる電池用セパレー
タを要旨とするものである。That is, the gist of the present invention is a battery separator made of a sheet made of chitin fibers or a sheet made of chitin fibrils.
本発明においてキチンとは、甲殻類、昆虫類等の外骨格
を塩酸処理及び力性ソーダして灰分及び蛋白質を除去し
た残りのアミノ多糖類、及びその誘導体をいう。好まし
いキチンの誘導体としては。In the present invention, chitin refers to the remaining aminopolysaccharide obtained by treating the exoskeleton of crustaceans, insects, etc. with hydrochloric acid and hydrochloric acid to remove ash and protein, and its derivatives. Preferred chitin derivatives include:
脱アセチル化度が数%のものから、いわゆるキトサンと
称される脱アセチル化度が80%以上のものを含む種々
の脱アセチル化物があげられる。さらには、前記アミノ
多糖類又はその脱アセチル化物のエーテル化物、エステ
ル化物、カルボキシメチル化物、ヒドロキシエチル化物
、0−エチル化物等があげられる。Various deacetylated products include those with a degree of deacetylation of a few percent to those with a degree of deacetylation of 80% or more, so-called chitosan. Further examples include etherified products, esterified products, carboxymethylated products, hydroxyethylated products, and 0-ethylated products of the aminopolysaccharides or their deacetylated products.
キチン繊維又はキチンフィブリルを製造する方法は特に
限定されず、公知の種々の方法を利用することができる
が、湿式成形法が好ましく採用される。キチンの溶剤と
しては、脱アセチル化度が20%以下のものの場合は、
N−メチルピロリドン又はジメチルアセトアミドと塩化
リチウムとの混合液、トリクロロ酢酸とハロゲン化炭化
水素との混合液が好ましく用いられ、一方、脱アセチル
化度が70%以上のものの場合は酢酸水溶液が好ましく
用いられる。凝固液としては、前者の溶剤を用いた場合
は水又は有機溶剤が、後者の溶剤を用いた場合は水又は
アルカリ水溶液が好ましく用いられる。キチン繊維の脱
アセチル化度の調整は。The method for producing chitin fibers or chitin fibrils is not particularly limited, and various known methods can be used, but a wet molding method is preferably employed. As a solvent for chitin, if the degree of deacetylation is 20% or less,
A mixture of N-methylpyrrolidone or dimethylacetamide and lithium chloride, a mixture of trichloroacetic acid and a halogenated hydrocarbon are preferably used, while an aqueous acetic acid solution is preferably used when the degree of deacetylation is 70% or more. It will be done. As the coagulating liquid, water or an organic solvent is preferably used when the former solvent is used, and water or an aqueous alkaline solution is preferably used when the latter solvent is used. Adjustment of deacetylation degree of chitin fibers.
得られたキチン繊維をアルカリ処理するか、あるいは無
水酢酸を含む有機溶剤で処理することによって行うこと
ができる。また、脱アセチル化度の高いものについては
9例えば、グルタルアルデヒド等により架橋して耐水性
を改良するのも好ましい方法である。This can be carried out by treating the obtained chitin fibers with an alkali or with an organic solvent containing acetic anhydride. In addition, for those having a high degree of deacetylation, it is also a preferable method to improve water resistance by crosslinking with, for example, glutaraldehyde.
キチン繊維としては、繊度が0.3〜10d、とくに0
.5〜3dで、長さが0.5〜201嘗のものが好まし
く用いられる。また、キチンライプリルとしては、径が
2〜100μで、長さが10μ〜10mmのものが好ま
しく用いられる。Chitin fibers have a fineness of 0.3 to 10 d, especially 0.
.. Those with a length of 5 to 3 d and a length of 0.5 to 201 mm are preferably used. Furthermore, chitin rhypolls having a diameter of 2 to 100 μm and a length of 10 μ to 10 mm are preferably used.
キチン繊維又はキチンフィブリルからシー・トを製造す
る方法は、公知の種々の方法を利用することができるが
、バインダーとともに水に分散したのち、水を除去して
シート状とし、ついで加熱。Various known methods can be used to produce sheets from chitin fibers or chitin fibrils, including dispersing them together with a binder in water, removing water to form sheets, and then heating.
圧縮する等の方法が好ましく採用できる。バインダーと
しては、加熱の際に融解するものが好ましく用いられ、
そのようなバインダーとしては1例えば、融解性のポリ
ビニルアルコール繊維(ユニチカ化成、SML)があげ
られる。また、シートの保水性を高めるためにセルロー
ス繊維を、キチン繊維又はキチンフィブリルに対し5〜
50重量%混合するのも好ましい方法である。セルロー
ス繊維としては、綿、コツトンリンター中のリグニン、
ヘミセルロース等の不純分を蒸煮分解除去してα−セル
ロース分を98%以上としたもの、化学処理した木材バ
ルブ(SP)をアルカリ処理したマーセル化バルブ等が
アルカリ液中での溶出成分や脱落成分が少なく、またア
ルカリ抵抗性が優れているので好ましく用いられる。A method such as compression can be preferably employed. As the binder, one that melts when heated is preferably used,
An example of such a binder is meltable polyvinyl alcohol fiber (Unitika Kasei, SML). In addition, in order to increase the water retention property of the sheet, cellulose fibers are added to chitin fibers or chitin fibrils by
A 50% by weight mixture is also a preferred method. Cellulose fibers include cotton, lignin in cotton linters,
Impurities such as hemicellulose are removed by steaming and decomposition to make the α-cellulose content 98% or more, and mercerized bulbs made from chemically treated wood bulbs (SP) treated with alkali are eluted and fallen off components in alkaline solutions. It is preferably used because it has low alkali resistance and excellent alkali resistance.
(実施例) 以下実施例によって本発明をさらに具体的に説明する。(Example) The present invention will be explained in more detail below with reference to Examples.
実施例1.比較例1
キチン粉末(新日本化学製、脱アセチル化度5%)を、
8W/賀%の塩化リチウムを含むジメチルアセトアミド
溶液中に濃度が9 W/W%となるよう溶解してキチン
ドープを得た。得られたドープを1480メツシユの金
網で濾過し、放置脱泡したのち、タンクに導き、ついで
加圧下にギヤーポンプで輸送し1口径0.08++n、
孔数5000のノズルから80℃の熱水中に吐出し、凝
固させたのち10 m/minの速度で引取り、洗浄の
うえ乾燥して単糸デニールが1.5dのキチン繊維を得
た。得られたキチン繊維を3n+の長さに切断したのち
、このキチン繊維と、コツトンリンターパルプと、バイ
ンダー(ポリビニルアルコール繊維、ユニチカ化成、S
ML)とを1重量比で7:3:2となるよう混合し、抄
紙器にて抄紙して第1表に示す坪量(g/ad)のセパ
レートを得た。Example 1. Comparative Example 1 Chitin powder (manufactured by Shin Nippon Chemical, degree of deacetylation 5%) was
A chitin dope was obtained by dissolving it in a dimethylacetamide solution containing lithium chloride at a concentration of 9 W/W%. The obtained dope was filtered through a wire mesh of 1480 mesh and left to defoam, then introduced into a tank, and then transported under pressure with a gear pump, with a diameter of 0.08++n per caliber.
It was discharged into hot water at 80° C. from a nozzle with 5,000 holes, solidified, taken out at a speed of 10 m/min, washed and dried to obtain chitin fibers with a single filament denier of 1.5 d. After cutting the obtained chitin fiber into a length of 3n+, the chitin fiber, cotton linter pulp, and a binder (polyvinyl alcohol fiber, Unitika Kasei, S
ML) at a weight ratio of 7:3:2 and paper was made using a paper machine to obtain separates having the basis weights (g/ad) shown in Table 1.
比較のため、キチン繊維に代えてビニロン繊維(1dX
311)・を用いた以外は実施例1と同様にしてセパレ
ートを得た。For comparison, vinylon fiber (1dX
A separate was obtained in the same manner as in Example 1 except that 311).
得られたセパレートを常温の42%KOH溶液に30分
間浸漬してKOHの吸蔵量〔セパレータに吸収されたK
OHの重量(A)と、セパレータの重量(B)の比、
(A)/(B) )を測定した。また、これらのセパレ
ートを用いて、起電力が1.5ボルトのアルカリ・マン
ガン乾電池を試作し、負荷抵抗2オームで端子電圧が0
.9ボルトになる迄、常温下で連続放電したときの放電
時間を測定した。その結果を第1表に示す。The obtained separate was immersed in a 42% KOH solution at room temperature for 30 minutes to determine the amount of KOH absorbed [K absorbed in the separator].
The ratio of the weight of OH (A) and the weight of the separator (B),
(A)/(B)) was measured. In addition, using these separates, we prototyped an alkaline manganese dry battery with an electromotive force of 1.5 volts, and the terminal voltage was 0 with a load resistance of 2 ohms.
.. The discharge time was measured when continuous discharge was performed at room temperature until the voltage reached 9 volts. The results are shown in Table 1.
第1表から明らかなように、実施例のセパレートは比較
例のセパレートに比べて電解液の吸収性が高く、またそ
のものから得られた乾電池は比較例のものから得られた
乾電池に比べてより長時間の放電が可能であった。As is clear from Table 1, the separates of the examples have higher electrolyte absorption properties than the separates of the comparative examples, and the dry batteries obtained from them have a higher absorbency than those of the comparative examples. It was possible to discharge for a long time.
なお、同様にして測定した市販のアルカリ・マンガン乾
電池の放電時間は980時間であった。Note that the discharge time of a commercially available alkaline manganese dry battery measured in the same manner was 980 hours.
第1表
実施例2.比較例2
キトサン粉末(新日本化学型)を、0.2Mの酢酸水溶
液に濃度が8−/−%となるよう溶解して透明なキトサ
ンドープを得た。得られたドープを1480メツシユの
金網で濾過し、放置脱泡したのち、タンクに導き、つい
で加圧下にギヤーポンプで輸送し1口径0.07+n、
孔数10000のノズルから0.5 Nの力性ソーダ水
溶液中に吐出し。Table 1 Example 2. Comparative Example 2 Chitosan powder (Shin Nippon Kagaku type) was dissolved in a 0.2 M acetic acid aqueous solution to a concentration of 8-/-% to obtain a transparent chitosan dope. The obtained dope was filtered through a wire mesh of 1480 mesh, left to defoam, then introduced into a tank, and then transported under pressure with a gear pump, with a diameter of 0.07+n per caliber.
Discharged into a 0.5 N strength soda aqueous solution from a nozzle with 10,000 holes.
凝固させたのち10 m/minの速度で引取り、しか
るのち、0.2Nの塩酸で中和後、洗浄、乾燥して単糸
デニールが0.8dの白色のキトサン繊維を得た。得ら
れたキトサン繊維を5 g / lの無水酢酸を含む5
0℃のメタノール中で1時間処理した。After coagulating, it was taken off at a speed of 10 m/min, then neutralized with 0.2N hydrochloric acid, washed and dried to obtain white chitosan fibers with a single denier of 0.8 d. The obtained chitosan fibers were mixed with 5 g/l of acetic anhydride.
The mixture was treated in methanol at 0°C for 1 hour.
ついで、31mの長さに切断し、このキトサン繊維と、
コツトンリンターパルプと、バインター(ポリビニルア
ルコール繊維、ユニチカ化成、SML)とを1重量比で
7:2:2となるよう混合し、抄紙器にて抄紙して第2
表に示す坪量(g/aJ)のセパレートを得た。Then, it was cut into a length of 31 m, and this chitosan fiber and
Kotton linter pulp and binder (polyvinyl alcohol fiber, Unitika Kasei, SML) are mixed at a weight ratio of 7:2:2, and paper is made using a paper machine to make a second paper.
Separates having the basis weight (g/aJ) shown in the table were obtained.
比較のため、キトサン繊維に代えてポリプロピレン繊維
(1,5d X 3鰭)を用いた以外は実施例1と同様
にしてセパレートを得た。For comparison, separates were obtained in the same manner as in Example 1, except that polypropylene fibers (1,5d x 3 fins) were used instead of chitosan fibers.
得られたセパレートについて実施例1と同様にしてKO
Hの吸蔵量及び放電時間を測定した。その結果を第2表
に示す。The obtained separate was subjected to KO in the same manner as in Example 1.
The amount of H absorbed and the discharge time were measured. The results are shown in Table 2.
第2表
第2表から明らかなように、実施例のセパレートは比較
例のセパレートに比べて優れた吸収性及び放電性能を示
した。Table 2 As is clear from Table 2, the separates of the examples exhibited superior absorbency and discharge performance compared to the separates of the comparative examples.
(発明の効果)
本発明のセパレートは、電解液であるアルカリに対する
耐性が高く、アルカリ電解液の吸収性も優れているため
、アルカリ・マンガン電池、酸化銀電池、水銀電池、ニ
ッケル・カドミウム電池等のアルカリ電解液を用いる乾
電池に好適に用いられ、放電時間の長い乾電池を提供す
ることができる。(Effects of the Invention) The separate of the present invention has high resistance to alkaline electrolytes and excellent absorption of alkaline electrolytes, so it can be used for alkaline manganese batteries, silver oxide batteries, mercury batteries, nickel cadmium batteries, etc. The present invention can be suitably used in a dry battery using an alkaline electrolyte, and can provide a dry battery with a long discharge time.
Claims (1)
からなるシートよりなる電池用セパレータ。(1) A battery separator made of a sheet made of chitin fibers or a sheet made of chitin fibrils.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62289785A JPH01130464A (en) | 1987-11-16 | 1987-11-16 | Separator for battery |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62289785A JPH01130464A (en) | 1987-11-16 | 1987-11-16 | Separator for battery |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH01130464A true JPH01130464A (en) | 1989-05-23 |
Family
ID=17747738
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62289785A Pending JPH01130464A (en) | 1987-11-16 | 1987-11-16 | Separator for battery |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH01130464A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104993084A (en) * | 2015-05-22 | 2015-10-21 | 宁波大学 | Biomass nanocrystal coated polyolefin lithium ion battery diaphragm and production method thereof |
JP2016089032A (en) * | 2014-11-05 | 2016-05-23 | 株式会社日本製鋼所 | Chitin nanofiber dispersion plasticizer, manufacturing method of polyolefin microporous stretched film containing chitin nanofiber, chitin nanofiber composite pore film and separator for nonaqueous secondary battery |
JP2019512838A (en) * | 2016-03-29 | 2019-05-16 | ディーケイジェイ・ニュー・エナジー・エス・アンド・ティー・カンパニー・リミテッド | Non-porous separator and use thereof |
-
1987
- 1987-11-16 JP JP62289785A patent/JPH01130464A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016089032A (en) * | 2014-11-05 | 2016-05-23 | 株式会社日本製鋼所 | Chitin nanofiber dispersion plasticizer, manufacturing method of polyolefin microporous stretched film containing chitin nanofiber, chitin nanofiber composite pore film and separator for nonaqueous secondary battery |
CN104993084A (en) * | 2015-05-22 | 2015-10-21 | 宁波大学 | Biomass nanocrystal coated polyolefin lithium ion battery diaphragm and production method thereof |
JP2019512838A (en) * | 2016-03-29 | 2019-05-16 | ディーケイジェイ・ニュー・エナジー・エス・アンド・ティー・カンパニー・リミテッド | Non-porous separator and use thereof |
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