JPH04206343A - Lithium battery - Google Patents
Lithium batteryInfo
- Publication number
- JPH04206343A JPH04206343A JP2333742A JP33374290A JPH04206343A JP H04206343 A JPH04206343 A JP H04206343A JP 2333742 A JP2333742 A JP 2333742A JP 33374290 A JP33374290 A JP 33374290A JP H04206343 A JPH04206343 A JP H04206343A
- Authority
- JP
- Japan
- Prior art keywords
- positive electrode
- porous body
- active material
- nh2o
- woven fabric
- 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
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims description 9
- 229910052744 lithium Inorganic materials 0.000 title claims description 9
- 239000007774 positive electrode material Substances 0.000 claims abstract description 10
- 239000011149 active material Substances 0.000 claims abstract description 9
- 239000007773 negative electrode material Substances 0.000 claims description 2
- 229910000733 Li alloy Inorganic materials 0.000 claims 1
- 239000001989 lithium alloy Substances 0.000 claims 1
- 239000007864 aqueous solution Substances 0.000 abstract description 9
- 239000011888 foil Substances 0.000 abstract description 8
- 239000004745 nonwoven fabric Substances 0.000 abstract description 7
- 239000003792 electrolyte Substances 0.000 abstract description 4
- 239000003365 glass fiber Substances 0.000 abstract description 4
- 238000000465 moulding Methods 0.000 abstract description 4
- 239000004743 Polypropylene Substances 0.000 abstract description 2
- 239000000853 adhesive Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 2
- 239000003795 chemical substances by application Substances 0.000 abstract description 2
- MHCFAGZWMAWTNR-UHFFFAOYSA-M lithium perchlorate Chemical compound [Li+].[O-]Cl(=O)(=O)=O MHCFAGZWMAWTNR-UHFFFAOYSA-M 0.000 abstract description 2
- 229910001486 lithium perchlorate Inorganic materials 0.000 abstract description 2
- 238000002844 melting Methods 0.000 abstract description 2
- -1 polypropylene Polymers 0.000 abstract description 2
- 229920001155 polypropylene Polymers 0.000 abstract description 2
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 abstract description 2
- 238000001035 drying Methods 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- 239000011230 binding agent Substances 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 239000000843 powder Substances 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000007784 solid electrolyte Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000002482 conductive additive Substances 0.000 description 2
- 239000006258 conductive agent Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 239000008151 electrolyte solution Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- NDVLTYZPCACLMA-UHFFFAOYSA-N silver oxide Chemical compound [O-2].[Ag+].[Ag+] NDVLTYZPCACLMA-UHFFFAOYSA-N 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 1
- 229910014540 LiMn2O Inorganic materials 0.000 description 1
- 229910013872 LiPF Inorganic materials 0.000 description 1
- 101150058243 Lipf gene Proteins 0.000 description 1
- 229910002097 Lithium manganese(III,IV) oxide Inorganic materials 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 229920002845 Poly(methacrylic acid) Polymers 0.000 description 1
- 239000006230 acetylene black Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- CXKCTMHTOKXKQT-UHFFFAOYSA-N cadmium oxide Inorganic materials [Cd]=O CXKCTMHTOKXKQT-UHFFFAOYSA-N 0.000 description 1
- CFEAAQFZALKQPA-UHFFFAOYSA-N cadmium(2+);oxygen(2-) Chemical compound [O-2].[Cd+2] CFEAAQFZALKQPA-UHFFFAOYSA-N 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000007600 charging Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010280 constant potential charging Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 229910003480 inorganic solid Inorganic materials 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011244 liquid electrolyte Substances 0.000 description 1
- 229910001540 lithium hexafluoroarsenate(V) Inorganic materials 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 239000006262 metallic foam Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- BFDHFSHZJLFAMC-UHFFFAOYSA-L nickel(ii) hydroxide Chemical compound [OH-].[OH-].[Ni+2] BFDHFSHZJLFAMC-UHFFFAOYSA-L 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229920002627 poly(phosphazenes) Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 229910001923 silver oxide Inorganic materials 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002759 woven fabric Substances 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
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は充放電特性を向上させたリチウム電池に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a lithium battery with improved charging and discharging characteristics.
（従来の技術）
一般に各種ポータプル機器等に用いられている電池の電
極は、ペースト式、粉末加圧式、クラッド式、焼結式な
どがある。(Prior Art) The electrodes of batteries generally used in various portable devices include paste type, powder press type, clad type, and sintered type.
ペースト式は鉛蓄電池の場合で良く知られており、主に
鉛粉と水と希硫酸とを練合してペースト状にし、鉛を主
体とする格子に充填する方法である。Ｎ１−ｃｄ電池に
おいても水酸化ニンヶルや酸化カドミウムを結着剤でペ
ースト状にして用いられている。The paste method is well known in the case of lead-acid batteries, and is a method in which lead powder, water, and dilute sulfuric acid are mixed together to form a paste, and the paste is filled into a lattice mainly composed of lead. Also in N1-CD batteries, nickel hydroxide or cadmium oxide is used in the form of a paste with a binder.
粉末加圧式は乾電池で知られている二酸化マンガン電池
、また酸化銀電池などに用いられている。The powder pressurized type is used in manganese dioxide batteries, known as dry batteries, and silver oxide batteries.
一方、高エネルギー密度、高電圧を存するリチウム電池
が最近注目されているが、この電池もバインダ、導電助
剤（アセチレンブラック等）などと混合し、加圧成形に
より正極材を作っている。On the other hand, lithium batteries, which have high energy density and high voltage, have recently attracted attention, and the positive electrode material for these batteries is also made by mixing with binders, conductive additives (acetylene black, etc.), and press-molding.
（発明が解決しようとする課題）
リチウム電池の正極材として、ＭｎＯ２、ＬｉＭｎ２Ｏ
４゜ＭｏＳ ＋ ｈＳｚ ｌ Ｃｒ３０ｓ ｌ活性炭な
ど各種材料が用いられている。この時も加圧成形して正
極を作るが、二次電池の場合Ｌｉイオンの挿入、脱離を
繰り返すうちに、活物質の体積変化により、バインダや
導電助剤と剥離、脱離してしまう。これにより電池サイ
クル寿命が短かくなるという課題を有していまたこのよ
うな粉末加圧法による正極作製は、粒状の活物質と導電
助剤を絶縁性のバインダーを用いて結着させるため、導
電助剤が活物質と集電体を１００％接続することは不可
能である。そして、絶縁性のバインダーがこれら粒子の
間に入って電導を妨げることも回避し得ない問題である
。(Problem to be solved by the invention) MnO2, LiMn2O can be used as positive electrode materials for lithium batteries.
Various materials are used, such as 4°MoS + hSz l Cr30s l activated carbon. At this time, a positive electrode is also produced by pressure molding, but in the case of a secondary battery, as Li ions are repeatedly inserted and desorbed, the volume of the active material changes, causing it to separate from the binder and conductive aid. This has the problem of shortening the battery cycle life. In addition, when producing a positive electrode using the powder pressing method, the granular active material and the conductive agent are bound together using an insulating binder, so the conductive agent is It is impossible for the agent to connect the active material and the current collector 100%. Another unavoidable problem is that the insulating binder gets between these particles and impedes electrical conduction.
さらに、固体電解質の場合、液体電解質のように加圧成
形した極材の粒子表面を１００％濡らすことは非常に困
難であり、且つ不要な空間も残る。Furthermore, in the case of a solid electrolyte, unlike a liquid electrolyte, it is extremely difficult to wet 100% of the particle surface of the pressure-molded electrode material, and unnecessary spaces remain.
このため活物質の利用率が悪く、容量密度も低くなる。Therefore, the utilization rate of the active material is poor and the capacity density is also low.
本発明はこれら課題を解決し、充放電サイクル寿命、放
電特性を向上させ、加圧形成をなしく、薄形の電池も容
易に作れる電極を備えたリチウム電池を提供するもので
ある。The present invention solves these problems and provides a lithium battery equipped with an electrode that improves charge/discharge cycle life and discharge characteristics, eliminates pressurized formation, and allows easy production of thin batteries.
（課題を解決するだめの手段）
上記の課題を解決するため、多孔体の内面に導電体を有
する電極を用いる。また正極活物質はν２０６．・ｎＨ
２Ｏを主体とするもので、負極活物質はＬｉまたはＬ１
合金にすると良い。(Another means to solve the problem) In order to solve the above problem, an electrode having a conductor on the inner surface of a porous body is used. In addition, the positive electrode active material is ν206.・nH
It is mainly composed of 2O, and the negative electrode active material is Li or L1.
It is better to use alloy.
（作用）
本発明は、Ｌｉイオンの挿入、脱離により活物質の体積
変化で生しる応力を緩和し、活物質の脱落を防止する。(Function) The present invention alleviates the stress caused by the volume change of the active material due to insertion and desorption of Li ions, and prevents the active material from falling off.
また加圧成形をすることなく電流を効率良く取り出せ、
薄形など形状の自由度が大きく量産性に適している。さ
らに活物質は水溶液状態から乾燥させて集電体に付着さ
せることができるため非常に密着性が良い。In addition, electric current can be extracted efficiently without pressure molding.
It has a large degree of freedom in shape, such as being thin, and is suitable for mass production. Furthermore, since the active material can be dried from an aqueous solution and attached to the current collector, it has very good adhesion.
（実施例） 本発明の一実施例を以下に示す。(Example) An example of the present invention is shown below.
（正極作製）
平均繊維径が１μｍ以下のガラス繊維を水中に分散させ
、ステンレスの網を用いて、不織布を抄造する。正極活
物質のｖ２０５・ｎｔ１２０水溶液は、結晶ｖ２０５を
溶融してこれを水中に入れて）ＩＶＯ３を作り、これを
重合させることが出来る。(Preparation of positive electrode) Glass fibers having an average fiber diameter of 1 μm or less are dispersed in water, and a nonwoven fabric is made using a stainless steel mesh. The v205/nt120 aqueous solution of the positive electrode active material can be prepared by melting crystal v205 and placing it in water to produce IVO3, which can then be polymerized.
次に、第１図に示すように、抄造したガラス繊維１の不
織布を多孔体２として導電性接着剤３でステンレス箔４
に接着させる。そしてこめステンレス箔４を正極活物質
であるＶ２Ｏ水溶液中に入れ、多孔体２内にν２０５・
ｎＨｚｏ水溶液を含浸させる。そしてこれを６０゛ｃで
３ｈの条件で乾燥させて、多孔体２である不織布の内面
にＶ□０５の膜を形成させる。これかられかるようにｖ
２０５・ｎＨ２Ｏ５は絶縁体であるガラス繊維１に密着
し、
表面積が広くなっている。また導電性接着剤３のところ
までＶｚ０５の膜はとぎれることなく形成されて、導電
性の非常に良いＶｚ０５の膜で導通が取られている。Next, as shown in FIG.
Glue it to. Then, the stainless steel foil 4 is placed in a V2O aqueous solution, which is a positive electrode active material, and ν205.
Impregnate with nHzo aqueous solution. This is then dried at 60°C for 3 hours to form a film of V□05 on the inner surface of the nonwoven fabric that is the porous body 2. From now on, I hope to see you soon.
205.nH2O5 adheres closely to the glass fiber 1, which is an insulator, and has a large surface area. Further, the Vz05 film is formed without interruption up to the conductive adhesive 3, and continuity is established by the Vz05 film, which has very good conductivity.
このような状態になっているステンレス箔を１８０°Ｃ
３ｈの条件で熱処理して正極を作った。Heat the stainless steel foil in this state to 180°C.
A positive electrode was produced by heat treatment for 3 hours.
理して正極を作った。I made a positive electrode using the same method.
（負極作製）
負極も正極と同じようにして作っても良いが今回は、Ｎ
ｉからなる多孔質な焼結体をＬｉ−Ａｆｆ合金から成る
溶融浴に入れて、多孔体の内面にＬｉ−Ａｊ２合金を形
成させる。これをステンレス箔に密着させて負極を作製
した。(Negative electrode production) The negative electrode can also be made in the same way as the positive electrode, but this time, N
A porous sintered body made of i is placed in a molten bath made of a Li-Aff alloy to form a Li-Aj2 alloy on the inner surface of the porous body. This was adhered to stainless steel foil to produce a negative electrode.
（電池作製）
電解液としてプロピレンカーボネートに過塩素酸リチウ
ムを１Ｍ溶解したものを用いる。第２図に示すように、
この電解液をポリプロピレンからなる不織布に含浸した
ちの６を正極７と密着させる。次に負極８を合せてホッ
トメルト状の封口剤９でステンレス箔４周囲を封口する
。これかられかるように薄形の電池が容易にでき厚さ１
ｍｍになっている。(Battery Preparation) As an electrolytic solution, a 1M solution of lithium perchlorate in propylene carbonate is used. As shown in Figure 2,
A nonwoven fabric made of polypropylene is impregnated with this electrolytic solution, and the fabric 6 is brought into close contact with the positive electrode 7. Next, the negative electrode 8 is placed together and the surroundings of the stainless steel foil 4 are sealed with a hot melt sealant 9. As you can see in the future, you can easily make thin batteries with a thickness of 1
It is mm.
（電池特性）
上記本発明品のほかに従来品としてν２０．・ｎＨ２Ｏ
を粉末にし導電助剤とバインダーとで混合加圧形成した
正極とＬｌ−ＡＩ２箔の負極とを用いて電池を作製し比
較した。(Battery characteristics) In addition to the above-mentioned products of the present invention, conventional products include ν20.・nH2O
A battery was prepared using a positive electrode prepared by powdering and press-forming the mixture with a conductive additive and a binder, and a negative electrode made of Ll-AI2 foil, and compared.
放電： ０．３ ｍＡ／ｃｍ２．終止電圧２．０■、充
電＝０、３ ｍＡ／ｃｍ２．４．、２ Ｖ定電圧充電１
４ｈ（２５°Ｃ）のサイクル条件で充放電試験を行った
が、第３Ｖに示すように、従来品に比べて本発明品は１
２０Ａｈ／ｇ （正極活物質重量当り）という高い容量
で１００サイクルでも安定に推移している。Discharge: 0.3 mA/cm2. Final voltage 2.0■, charge = 0, 3 mA/cm2.4. , 2V constant voltage charging 1
A charge/discharge test was conducted under cycle conditions of 4 hours (25°C), and as shown in 3rd V, the product of the present invention had a 1.
It has a high capacity of 20Ah/g (per weight of positive electrode active material) and remains stable even after 100 cycles.
上記した実施例以外でも本発明は行うことができる。例
えば正極は炭素繊維などの導電性繊維を用いた織布、不
織布を使ったり、ガラス繊維の表面こ二金属をコーティ
ングしたり導電性樹脂を付けたりして用いても良い。ま
た金属の発泡体やポリエステルなどの樹脂を発泡させ、
その表面に導電性物をコーティングしたものを集電とし
ても良い。The present invention can be carried out in other embodiments than those described above. For example, the positive electrode may be a woven or nonwoven fabric made of conductive fibers such as carbon fiber, or a glass fiber whose surface may be coated with metal or a conductive resin. In addition, by foaming metal foam or resin such as polyester,
The current collector may be a material whose surface is coated with a conductive material.
またＮｉ粉末などの金属粒子を焼結させて多孔体を作り
、これを集電体とじても良い。Alternatively, a porous body may be created by sintering metal particles such as Ni powder, and this may be bound as a current collector.
一方正極活物質もＶ２Ｏ，・ｎＨ２Ｏだけでなく、Ｖ２
Ｏ。On the other hand, the positive electrode active material is not only V2O, ・nH2O, but also V2
O.
・ｎＨ２Ｏ水溶液中に、Ｍｎ０ｚ ｌ ＬｉＭｎ２Ｏ４
，Ｍｏ５ｚ ＋Ｔｌ５２ ＋ Ｃｒ＝Ｏａ ＋ Ｖ６Ｏ
１３＋黒鉛、活性炭などの物質の粉末を入れることは容
量増加ができるので好ましい。また水溶液中に入れて混
合するため、分散が均一にでき、乾燥させて集電に付着
させてもＶ２Ｏ，・ｎＨ２Ｏにより密着性が良い。・Mn0z l LiMn2O4 in nH2O aqueous solution
, Mo5z + Tl52 + Cr=Oa + V6O
13+ It is preferable to add powder of a substance such as graphite or activated carbon because the capacity can be increased. In addition, since it is mixed in an aqueous solution, it can be dispersed uniformly, and even when it is dried and attached to a current collector, it has good adhesion due to V2O, .nH2O.
また電解液もジメトキシエタンなど他の有機溶媒や混合
物を用いても良い。さらに高分子固体電解質（例：ポリ
エチレンオキシド系、ポリプロピレンオキシド系、ポリ
メタクリル酸系、ポリホスファゼン系）を用いると液漏
れの心配がないので好ましい。また無機の固体電解質お
ゴム系のバインダーを混合した柔軟性のある電解質でも
良い。In addition, other organic solvents such as dimethoxyethane or mixtures may be used as the electrolyte. Further, it is preferable to use a polymer solid electrolyte (eg, polyethylene oxide type, polypropylene oxide type, polymethacrylic acid type, polyphosphazene type) because there is no fear of liquid leakage. Alternatively, a flexible electrolyte mixed with an inorganic solid electrolyte and a rubber binder may be used.
一方、電解液に溶かず溶質は特に制限しないが、ＬｉＢ
Ｆ４ 、 ＬｉＡｓＦ６ 、 ＬｉＡｆＣｊ２．
ＬｉＰＦ、 、 ＣＦ３５○３Ｌ１ ＋ＬｉＣｆ
２などが挙げられる。On the other hand, there are no particular restrictions on solutes that do not dissolve in the electrolyte, but
F4, LiAsF6, LiAfCj2.
LiPF, , CF35○3L1 +LiCf
2 etc.
（発明の効果）
本発明は多孔体の内面に導電性を有する電極を用いるた
め、充放電サイクル寿命、放電特性が良く、加圧形成な
しに正極を作製でき、量産性にすくれている。さらに正
極活物質である〜“２０．・ｎ１Ｉ２０は水溶液状態か
ら乾燥させて付着させるため畜着が良いことなど工業的
価値極めて大である。(Effects of the Invention) Since the present invention uses conductive electrodes on the inner surface of the porous body, the charge/discharge cycle life and discharge characteristics are good, and the positive electrode can be produced without pressure forming, making it suitable for mass production. Furthermore, the positive electrode active material ``20..n1I20'' is of great industrial value, as it has good adhesion because it is dried from an aqueous solution.
第１図は、本発明の一実施例における正極の状態を示す
拡大断面図、第２図は、本発明品の一実゛施例を示すリ
チウム電池の断面図、第３図は充放電サイクルの容量推
移を示す比較特性回である。Fig. 1 is an enlarged sectional view showing the state of the positive electrode in an embodiment of the present invention, Fig. 2 is a sectional view of a lithium battery showing an embodiment of the product of the invention, and Fig. 3 is a charge/discharge cycle. This is a comparative characteristic showing the change in capacity.
Claims (3)
質を付着させたことを特徴とするリチウム電池。(1) A lithium battery characterized in that an active material is attached to the inside of a conductive electrode on the inner surface of a porous body.
するものであることを特徴とする請求項（１）記載のリ
チウム電池。(2) The lithium battery according to claim (1), wherein the positive electrode active material is mainly composed of V_2O_5·nH_2O.
徴とする請求項（１）記載のリチウム電池。(3) The lithium battery according to claim (1), wherein the negative electrode active material is Li or a Li alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2333742A JP2552393B2 (en) | 1990-11-30 | 1990-11-30 | Lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2333742A JP2552393B2 (en) | 1990-11-30 | 1990-11-30 | Lithium battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04206343A true JPH04206343A (en) | 1992-07-28 |
| JP2552393B2 JP2552393B2 (en) | 1996-11-13 |
Family
ID=18269452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2333742A Expired - Fee Related JP2552393B2 (en) | 1990-11-30 | 1990-11-30 | Lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2552393B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009043536A (en) * | 2007-08-08 | 2009-02-26 | Toyota Motor Corp | Lithium secondary battery |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6174268A (en) * | 1984-09-17 | 1986-04-16 | Hitachi Maxell Ltd | Lithium secondary cell |
| JPS62274555A (en) * | 1986-05-23 | 1987-11-28 | Toshiba Battery Co Ltd | Nonaqueous solvent secondary battery |
| JPH02148566A (en) * | 1988-11-28 | 1990-06-07 | Komatsu Ltd | High polymer-coated foaming material electrode and manufacture thereof |
-
1990
- 1990-11-30 JP JP2333742A patent/JP2552393B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6174268A (en) * | 1984-09-17 | 1986-04-16 | Hitachi Maxell Ltd | Lithium secondary cell |
| JPS62274555A (en) * | 1986-05-23 | 1987-11-28 | Toshiba Battery Co Ltd | Nonaqueous solvent secondary battery |
| JPH02148566A (en) * | 1988-11-28 | 1990-06-07 | Komatsu Ltd | High polymer-coated foaming material electrode and manufacture thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009043536A (en) * | 2007-08-08 | 2009-02-26 | Toyota Motor Corp | Lithium secondary battery |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2552393B2 (en) | 1996-11-13 |
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