JPH03276578A - Nonaqueous electrolyte secondary battery - Google Patents
Nonaqueous electrolyte secondary batteryInfo
- Publication number
- JPH03276578A JPH03276578A JP2078360A JP7836090A JPH03276578A JP H03276578 A JPH03276578 A JP H03276578A JP 2078360 A JP2078360 A JP 2078360A JP 7836090 A JP7836090 A JP 7836090A JP H03276578 A JPH03276578 A JP H03276578A
- Authority
- JP
- Japan
- Prior art keywords
- diameter
- positive electrode
- battery
- base metal
- alloyed
- 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
- 239000011255 nonaqueous electrolyte Substances 0.000 title claims description 13
- 239000010953 base metal Substances 0.000 claims abstract description 19
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 11
- 239000000956 alloy Substances 0.000 claims abstract description 11
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 17
- 229910052744 lithium Inorganic materials 0.000 claims description 17
- 229910052782 aluminium Inorganic materials 0.000 abstract description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 9
- 238000007600 charging Methods 0.000 abstract description 9
- 238000005275 alloying Methods 0.000 abstract description 6
- 238000007599 discharging Methods 0.000 abstract description 5
- 229910000838 Al alloy Inorganic materials 0.000 abstract description 4
- JFBZPFYRPYOZCQ-UHFFFAOYSA-N [Li].[Al] Chemical compound [Li].[Al] JFBZPFYRPYOZCQ-UHFFFAOYSA-N 0.000 abstract description 4
- 230000002093 peripheral effect Effects 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 7
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 239000011149 active material Substances 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- XKTYXVDYIKIYJP-UHFFFAOYSA-N 3h-dioxole Chemical compound C1OOC=C1 XKTYXVDYIKIYJP-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 239000006230 acetylene black Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000006258 conductive agent Substances 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000003411 electrode reaction Methods 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- MHCFAGZWMAWTNR-UHFFFAOYSA-M lithium perchlorate Chemical compound [Li+].[O-]Cl(=O)(=O)=O MHCFAGZWMAWTNR-UHFFFAOYSA-M 0.000 description 1
- 229910001486 lithium perchlorate Inorganic materials 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- RCYJPSGNXVLIBO-UHFFFAOYSA-N sulfanylidenetitanium Chemical compound [S].[Ti] RCYJPSGNXVLIBO-UHFFFAOYSA-N 0.000 description 1
- HXJUTPCZVOIRIF-UHFFFAOYSA-N sulfolane Chemical compound O=S1(=O)CCCC1 HXJUTPCZVOIRIF-UHFFFAOYSA-N 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 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１ユａ劃走１
本発明は、三酸化モリブデン、五酸化バナジウム、二酸
化マンガン、或いは硫化チタンなどのような再充電可能
な活物質よりなる正極と、リチウムを活物質とする負極
と、これら正負極間に介装され非水電解液を含有するセ
パレータとを有する非水電解液二次電池に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention utilizes a positive electrode made of a rechargeable active material such as molybdenum trioxide, vanadium pentoxide, manganese dioxide, or titanium sulfide, and a lithium activated material. The present invention relates to a non-aqueous electrolyte secondary battery having a negative electrode made of a substance, and a separator interposed between the positive and negative electrodes and containing a non-aqueous electrolyte.
従米立伎土
この種電池の問題点は負極活物質であるリチウムが、充
電の際に負極表面に樹枝状に成長し正極と接して内部短
絡を引き起こしたり、モッシー状に析出して脱落が生じ
るため、充放電サイクルが極めて短いことにある。The problem with this type of battery is that the lithium, which is the negative electrode active material, grows in a dendritic form on the surface of the negative electrode during charging and comes into contact with the positive electrode, causing an internal short circuit, or it precipitates in a mossy pattern and falls off. Therefore, the charge/discharge cycle is extremely short.
そこで、特開昭５２−５４２３号公報に示すように、負
極にリチウム−アルミニウム合金を用いたものが提案さ
れている。これはリチウム単独の場合、放電によってリ
チウムがイオンとなって溶出すると負極表面が凹凸状と
なり、その後の充電の際にリチウムが凸部に集中的に電
析して樹枝状の成長するのに対して、リチウム−アルミ
ニウム合金であれば、充電時にリチウムが負極の基体と
なるアルミニウムと合金を形成するように復元するため
、リチウムの樹枝状成長が抑制できるという利点を奏す
るためである。Therefore, as shown in Japanese Unexamined Patent Publication No. 52-5423, a negative electrode using a lithium-aluminum alloy has been proposed. This is because in the case of lithium alone, when lithium is ionized and eluted during discharge, the negative electrode surface becomes uneven, and during subsequent charging, lithium is deposited intensively on the convex parts and grows like a tree. This is because, in the case of a lithium-aluminum alloy, lithium restores itself to form an alloy with aluminum, which serves as the base of the negative electrode, during charging, so that the dendritic growth of lithium can be suppressed.
そして、その合金化方法としては１、特公昭６１−４６
９４７号公報に示すように、電気化学的に合金化したも
のの特性が良好である。The alloying method is 1, Special Publication No. 61-46
As shown in Japanese Patent No. 947, the properties of electrochemical alloys are good.
＜”しよ゛と る量
ところで、上記の如く電気化学的に合金化する場合、電
流は電極周辺部に集中する傾向があるため、電極周辺部
の方が電極中心部より合金化が早く進行することになる
。加えて、上記電池を充放電する際には、エツジ効果に
より電極反応が周辺部に集中する。このため、電極周辺
部が中心部より早く劣化し、この結果電池寿命も短くな
るという課題を有していた。By the way, when electrochemically alloying as described above, the current tends to concentrate around the electrode, so alloying progresses faster at the electrode periphery than at the electrode center. In addition, when charging and discharging the above-mentioned battery, the electrode reaction concentrates on the periphery due to the edge effect.As a result, the periphery of the electrode deteriorates faster than the center, and as a result, the battery life is shortened. We had the challenge of becoming.
本発明はかかる現状に鑑みてなされたものであり、合金
化時及び充放電時に電極周辺部に電流集中が生じるのを
抑制してサイクル特性の向上を図りうる非水電解液二次
電池を提供することを目的とする。The present invention has been made in view of the current situation, and provides a non-aqueous electrolyte secondary battery that can improve cycle characteristics by suppressing current concentration around electrodes during alloying and charging/discharging. The purpose is to
ｉ ゛ るための
本発明は上記目的を達成するために、基体金属部及び基
体金属とリチウムとの合金から成る合金化部から成る負
極と、正極と、これら正負極間に介装されたセパレータ
とを有する非水電解液二次電池において、前記合金化部
の直径は前記基体金属部の直径の８０％以上９８％以下
となり、前記正極の直径は合金化部の直径の８３％以上
１００％以下となるように構成されていることを特徴と
する。In order to achieve the above object, the present invention includes a negative electrode comprising a base metal part and an alloyed part made of an alloy of the base metal and lithium, a positive electrode, and a separator interposed between these positive and negative electrodes. In the nonaqueous electrolyte secondary battery, the diameter of the alloyed portion is 80% or more and 98% or less of the diameter of the base metal portion, and the diameter of the positive electrode is 83% or more and 100% of the diameter of the alloyed portion. It is characterized by being configured as follows.
昨二−−−肛
電極の周辺部が中心部より早く劣化するのを防止するた
めには、合金化部の直径を基体金属部の直径より小さく
し、且つ正極の直径を合金化部の直径より小さくするこ
とが必要である。しかし、合金化部や正極を余り小さく
しすぎると、電池容量が低下するという課題がある。In order to prevent the peripheral part of the anal electrode from deteriorating faster than the central part, the diameter of the alloyed part should be made smaller than the diameter of the base metal part, and the diameter of the positive electrode should be made smaller than the diameter of the alloyed part. It is necessary to make it smaller. However, if the alloyed portion or the positive electrode is made too small, there is a problem in that the battery capacity decreases.
ところが、上記構成の如（合金化部の直径と正極の直径
とを規定すれば、合金化部や正極の直径が余り小さくな
いので電池容量が低下することがなく、且つ合金化時及
び充放電時に電極周辺部に電流集中が生じるのを抑制す
ることができるので、サイクル特性を向上させることが
できる。However, with the above structure (if the diameter of the alloyed part and the diameter of the positive electrode are specified), the diameter of the alloyed part and the positive electrode is not too small, so the battery capacity does not decrease, and the charging and discharging time during alloying and charging/discharging are Since it is possible to suppress current concentration from occurring around the electrode at times, cycle characteristics can be improved.
］工１ｉＪＬ桝
本発明の一実施例を、第１図乃至第３図に基づいて、以
下に説明する。] One embodiment of the present invention will be described below with reference to FIGS. 1 to 3.
第１図に示すように、リチウム−アルミニウム合金から
成る合金化部２ａとアルミニウムから成る基体金属部２
ｂとから構成される負極２は負極集電体７の内面に圧着
されており、この負極集電体７はステンレスから成る断
面略コ字状の負極缶５の内底面に固着されている。上記
負極缶５の周端はポリプロピレン製の絶縁バッキング８
の内部に固定されており、絶縁バッキング８の外周には
ステンレスから成り上記負極缶５とは反対方向に断面略
コ字状を成す正極缶４が固定されている。As shown in FIG. 1, an alloyed part 2a made of lithium-aluminum alloy and a base metal part 2 made of aluminum
The negative electrode 2 composed of the components b is crimped to the inner surface of a negative electrode current collector 7, and this negative electrode current collector 7 is fixed to the inner bottom surface of a negative electrode can 5 made of stainless steel and having a substantially U-shaped cross section. The peripheral edge of the negative electrode can 5 is covered with an insulating backing 8 made of polypropylene.
A positive electrode can 4 made of stainless steel and having a substantially U-shaped cross section in the opposite direction to the negative electrode can 5 is fixed to the outer periphery of the insulating backing 8.
この正極缶４の内底面には正極集電体６が固定されてお
り、この正極集電体６の内面には正極１が固定されてい
る。この正極ｌと前記負極２との間には、非水電解液が
含浸されポリプロピレン製多孔性膜から成るセパレータ
３が介装されている。A positive electrode current collector 6 is fixed to the inner bottom surface of the positive electrode can 4, and a positive electrode 1 is fixed to the inner surface of this positive electrode current collector 6. A separator 3 made of a porous polypropylene membrane impregnated with a non-aqueous electrolyte is interposed between the positive electrode 1 and the negative electrode 2.
尚、上記非水電解液としては、スルホランと１゜３−ジ
オキソランとの混合溶媒に過塩素酸リチウムを１モル／
ｌの割合で溶解したものを用いている。また、電池寸法
は直径２４．Ｏｍｍ、厚み３゜０鵬である。The non-aqueous electrolyte is a mixed solvent of sulfolane and 1°3-dioxolane containing 1 mol/mol of lithium perchlorate.
A solution dissolved at a ratio of 1 liter is used. Also, the battery dimensions are 24mm in diameter. 0mm, thickness 3゜0㎬.
ところで、上記合金化部２ａの直径１２は基体金属部２
ｂの直径ｌ、の９８％、また正極１の直径１３は基体金
属部２ｂの直径！！、Ｉの９８％（即ち、上記１２と同
じ）となるように構成されている。By the way, the diameter 12 of the alloyed part 2a is the same as that of the base metal part 2.
98% of the diameter l of b, and the diameter 13 of the positive electrode 1 is the diameter of the base metal portion 2b! ! , I (ie, the same as 12 above).
次に、上記構造の非水電解液二次電池は、以下のように
して作製した。Next, a non-aqueous electrolyte secondary battery having the above structure was produced as follows.
先ず、正極１を以下のようにして作製する。First, the positive electrode 1 is produced as follows.
活物質である二酸化マンガン８０重量部に、導電剤とし
てのアセチレンブラック１０重量部と、結着剤としての
フッ素樹脂粉末１０重量部とを加えて充分に混合した後
、この正極合剤を加圧成型することにより作製する。After adding 10 parts by weight of acetylene black as a conductive agent and 10 parts by weight of fluororesin powder as a binder to 80 parts by weight of manganese dioxide as an active material and thoroughly mixing the mixture, this positive electrode mixture was pressurized. Manufactured by molding.
これと並行して、シート状のリチウムとアルミニウムと
を所定寸法に打ち抜くことにより金属リチウム板とアル
ミニウム板とを作製する。この際、第２図に示す金属リ
チウムの直径１４は前記合金化部２ａの直径！□より小
さく形成した。これは、金属リチウムが合金化される際
に膨張するということを考慮したものである。In parallel with this, a metal lithium plate and an aluminum plate are produced by punching sheet-like lithium and aluminum into predetermined dimensions. At this time, the diameter 14 of the metal lithium shown in FIG. 2 is the diameter of the alloyed portion 2a! □Made smaller. This is done in consideration of the fact that metallic lithium expands when alloyed.
しかる後、第２図に示すように、正極缶４と負極缶５と
から構成される空間内に、負極缶５側から順に、アルミ
ニウム板９と、リチウム板１０とセパレータ３と、正極
１とを装着する。この後、このようにして作製した予備
電池を１週間放置する。これにより、リチウムとアルミ
ニウムとが合金化されて、非水電解液二次電池が作製さ
れる。Thereafter, as shown in FIG. 2, an aluminum plate 9, a lithium plate 10, a separator 3, a cathode 1, and a cathode 1 are placed in order from the anode can 5 side in the space constituted by the cathode can 4 and the anode can 5. Attach. Thereafter, the spare battery thus produced was left for one week. Thereby, lithium and aluminum are alloyed, and a non-aqueous electrolyte secondary battery is produced.
このようにして作製した電池を、以下（Ａ１）電池と称
する。The battery thus produced is hereinafter referred to as (A1) battery.
下記第１表に示すように、合金化部２ａの直径１２と正
極１の直径２３とを変化させる他は、上記実施例■と同
様にして電池を作製した。但し、本実施例においても、
正ｐｊｉｌの直径！、は合金化部２ａの直径１２と同じ
に構成されている。As shown in Table 1 below, a battery was produced in the same manner as in Example 2 above, except that the diameter 12 of the alloyed portion 2a and the diameter 23 of the positive electrode 1 were changed. However, also in this example,
Diameter of positive pjil! , are configured to be the same as the diameter 12 of the alloyed portion 2a.
このようにして作製した電池を、以下それぞれ（Ａｔ）
１ｉ池〜（Ａ、）！池と称する。The batteries produced in this way are shown below (At).
1iike~(A,)! It is called a pond.
第１表
〔比較例■〜■〕
上記第１表に示すように、合金化部２ａの直径Ｘｔ
（リチウム直径ｆｆｉ、）と正極１の直径１３とを変化
させる他は、上記実施例Ｉと同様にして電池を作製した
。但し、本比較例においても、正極１の直径！、は合金
化部２ａの直径ｊ２２と同じに構成されている。Table 1 [Comparative Examples ■ to ■] As shown in Table 1 above, the diameter Xt of the alloyed part 2a
A battery was produced in the same manner as in Example I above, except that (lithium diameter ffi) and the diameter 13 of the positive electrode 1 were changed. However, even in this comparative example, the diameter of positive electrode 1! , is configured to be the same as the diameter j22 of the alloyed portion 2a.
このようにして作製した電池を、以下それぞれ（Ｘ、）
電池〜（Ｘ３）電池と称する。The batteries produced in this way are shown below (X,).
Battery ~(X3) Referred to as battery.
上記本発明の（Ａ、）電池〜（Ａ、）’：ａ池及び比較
例の（Ｘ、）電池〜（Ｘｉ）ｉｉ池のサイクル特性を調
べたので、その結果を第３図に示す。尚、実験条件は、
充を電流１２ｍＡで６時間充電した後、放電電流１２ｍ
Ａで終止電圧２．０■まで放電するという条件である。The cycle characteristics of the battery (A,) of the present invention to (A,)':a cell and the battery (X,) to (Xi)ii of the comparative example were investigated, and the results are shown in FIG. The experimental conditions are as follows:
After charging for 6 hours at a current of 12mA, the discharge current is 12mA.
The condition is to discharge at A to a final voltage of 2.0 .
第３図に示すように、（Ａ、）を池〜（Ａ、）電池は全
てサイクル寿命が４００サイクル以上であるのに対して
、（ＸＩ ）電池〜＜ｘｚ）Ｎ池では全てサイクル寿命
が４００サイクル以下であることが認められる。したが
って、合金化部２ａの直径！２は前記基体金属部２ｂの
直径２．の８０％以上９８％以下であることが好ましい
ことが窺える。As shown in Figure 3, all of the (A,) and (A,) batteries have a cycle life of 400 cycles or more, whereas all of the (XI) and (XI) batteries have a cycle life of 400 cycles or more. It is recognized that the cycle time is 400 cycles or less. Therefore, the diameter of the alloyed part 2a! 2 is the diameter 2 of the base metal portion 2b. It can be seen that it is preferable that the ratio is 80% or more and 98% or less.
特に、合金化部２ａの直径ｌ！が基体金属部２ｂの直径
！、の９０％となるように設定した（Ａ４）！池が優れ
ていることが認められる。In particular, the diameter l of the alloyed portion 2a! is the diameter of the base metal part 2b! , was set to be 90% of (A4)! It is recognized that the pond is excellent.
芽−ｍ桝
本発明の一実施例を、第４図に基づいて、以下に説明す
る。One embodiment of the present invention will be described below with reference to FIG.
下記第２表に示すように、正極１の直径！、を変化させ
る他は、前記第１実施例の実施例■（合金化部２ａの直
径１２が基体金属部２ｂの直径１１の９０％となるよう
に設定したもの）と同様にして電池を作製した。As shown in Table 2 below, the diameter of positive electrode 1! A battery was produced in the same manner as in Example 2 of the first example (the diameter 12 of the alloyed part 2a was set to be 90% of the diameter 11 of the base metal part 2b), except that . did.
このようにして作製した電池を、以下それぞれ（Ｂ、）
電池〜（Ｂ３）電池と称する。The batteries produced in this way are shown below (B,).
Battery ~ (B3) Referred to as battery.
第２表
〔比較例Ｉ〜ｍ〕
上記第２表に示すように、正極１の直径！、とを変化さ
せる他は、上記第１実施例の実施例■と同様にして電池
を作製した。Table 2 [Comparative Examples I to m] As shown in Table 2 above, the diameter of positive electrode 1! A battery was produced in the same manner as in Example 2 of the first example above, except that , and were changed.
このようにして作製した電池を、以下それぞれ（Ｙ、）
電池、（ｙｚ）電池と称する。The batteries produced in this way are shown below (Y,).
The battery is called a (yz) battery.
上記本発明の（Ｂ、’）電池〜（Ｂ３）電池、前記（Ａ
４）電池及び比較例の（Ｙ、）電池、 （ｙ８）電池
のサイクル特性を調べたので、その結果を第４図に示す
。尚、実験条件は、前記第１実施例の実験と同様の条件
である。(B,') battery to (B3) battery of the present invention, the (A
4) The cycle characteristics of the battery, the comparative example (Y,) battery, and the (y8) battery were investigated, and the results are shown in FIG. The experimental conditions were the same as those of the first embodiment.
第４図に示すように、（Ｂ１）電池〜（Ｂ３）電池、前
記（Ａ４）電池は全てサイクル寿命が４００サイクル以
上であるのに対して、（Ｙ、）電池、（Ｙり電池では全
てサイクル寿命が４００サイクル以下であることが認め
られる。したがって、正極１の直径（３は合金化部２ａ
の直径２□の８３％以上ＩＯθ％以下であることが好ま
しいことが窺える。As shown in Figure 4, the (B1) battery to (B3) battery and the (A4) battery all have a cycle life of 400 cycles or more, while the (Y,) battery and (Y battery) all have a cycle life of 400 cycles or more. It is recognized that the cycle life is 400 cycles or less. Therefore, the diameter of the positive electrode 1 (3 is the alloyed part 2a
It can be seen that it is preferable that the diameter is 83% or more and IOθ% or less of the diameter 2□.
尚、上記２つの実施例では、電池内でアルミニウムとリ
チウムとを合金化しているが、電池外で合金化した後電
池内に合金を装填するようにしても上記と同様の効果を
奏することは勿論である。Note that in the above two examples, aluminum and lithium are alloyed inside the battery, but the same effect as described above cannot be achieved even if the alloy is alloyed outside the battery and then loaded into the battery. Of course.
また、基体金属としてはアルミニウムに限定されるもの
ではなく、鉛、錫、カドミウム、ビスマス、ケイ素、イ
ンジウム、亜鉛、或いはマグネシウムから成る群から選
択される１種以上の金属或いは合金を用いてもよい。Further, the base metal is not limited to aluminum, and one or more metals or alloys selected from the group consisting of lead, tin, cadmium, bismuth, silicon, indium, zinc, or magnesium may be used. .
更に、基体金属中に、マンガン、クロム、鉄。Furthermore, the base metal contains manganese, chromium, and iron.
４゜ ケイ素、タングステン、モリブデン、コバルト。4゜ Silicon, tungsten, molybdenum, cobalt.
ニッケル、ジルコニウム、マグネシウム、チタン。Nickel, zirconium, magnesium, titanium.
或いはバナジウムより選択される１種以上の金属が添加
されたものを用いてもよい。Alternatively, one to which one or more metals selected from vanadium is added may be used.
光」ＬΩ」Ｌ果
以上説明したように本発明によれば、電池容量を低下さ
せることなくサイクル特性を向上させることができる。As explained above, according to the present invention, cycle characteristics can be improved without reducing battery capacity.
この結果、非水電解液二次電池の性能を飛躍的に向上さ
せることができるという効果を奏する。As a result, the performance of the non-aqueous electrolyte secondary battery can be dramatically improved.
【図面の簡単な説明】
第１図は本発明の非水電解液二次電池を示す断面図、第
２図は第１図の電池の製造方法を示す断面図、第３図は
本発明の（Ａ、）電池〜（Ａ、）電池及び比較例の（Ｘ
ｌ）電池〜（Ｘ、）電池のサイクル寿命を示すグラフ、
第４図は本発明の（Ｂｌ ）電池〜（Ｂ、）電池、（Ａ
４）電池及び比較例の（Ｙ＋）電池、（ｙｚ）電池のサ
イクル寿命を示すグラフである。
■・・・正極、
２・・・負極、
２ａ・・・合金化部、
２ ｂ・・・
基体金属部、
３・・・セパレータ。[Brief Description of the Drawings] Fig. 1 is a sectional view showing a non-aqueous electrolyte secondary battery of the present invention, Fig. 2 is a sectional view showing a method for manufacturing the battery of Fig. 1, and Fig. 3 is a sectional view showing a method for manufacturing the battery of the present invention. (A,) Battery ~ (A,) Battery and Comparative Example (X
l) Battery ~ (X,) Graph showing the cycle life of the battery,
Figure 4 shows (Bl) battery to (B,) battery, (A
4) It is a graph showing the cycle life of a battery, a (Y+) battery, and a (yz) battery as comparative examples. ■... Positive electrode, 2... Negative electrode, 2a... Alloyed part, 2 b... Base metal part, 3... Separator.
Claims (1)
成る合金化部から成る負極と、正極と、これら正負極間
に介装されたセパレータとを有する非水電解液二次電池
において、 前記合金化部の直径は前記基体金属部の直径の８０％以
上９８％以下となり、前記正極の直径は合金化部の直径
の８３％以上１００％以下となるように構成されている
ことを特徴とする非水電解液二次電池。(1) A non-aqueous electrolyte secondary battery having a negative electrode comprising a base metal part and an alloyed part made of an alloy of the base metal and lithium, a positive electrode, and a separator interposed between these positive and negative electrodes, The diameter of the alloyed portion is 80% or more and 98% or less of the diameter of the base metal portion, and the diameter of the positive electrode is configured to be 83% or more and 100% or less of the diameter of the alloyed portion. A non-aqueous electrolyte secondary battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2078360A JP2989212B2 (en) | 1990-03-26 | 1990-03-26 | Non-aqueous electrolyte secondary battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2078360A JP2989212B2 (en) | 1990-03-26 | 1990-03-26 | Non-aqueous electrolyte secondary battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03276578A true JPH03276578A (en) | 1991-12-06 |
| JP2989212B2 JP2989212B2 (en) | 1999-12-13 |
Family
ID=13659831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2078360A Expired - Lifetime JP2989212B2 (en) | 1990-03-26 | 1990-03-26 | Non-aqueous electrolyte secondary battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2989212B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6689512B2 (en) | 2001-04-11 | 2004-02-10 | Hitachi Maxell Ltd. | Flat-shaped nonaqueous electrolyte battery |
-
1990
- 1990-03-26 JP JP2078360A patent/JP2989212B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6689512B2 (en) | 2001-04-11 | 2004-02-10 | Hitachi Maxell Ltd. | Flat-shaped nonaqueous electrolyte battery |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2989212B2 (en) | 1999-12-13 |
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