LITHIUM PRIMARY BATTERY

• Main Authors: SATAKE HARUHIKO, NISHIMURA NAOAKI, OCHIAI YUKI, NISHIGUCHI NOBUHIRO
• Format: Patent
• Language: English; Japanese
• Published: 13.04.2015
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

PROBLEM TO BE SOLVED: To provide a lithium primary battery capable of large current discharge even under a low temperature environment.SOLUTION: In a lithium primary battery 1, an electrode body 10 where a sheet-like positive electrode 20 and a sheet-like negative electrode 30 are arranged to face each other with a separator 40 interposed therebetween is enclosed in an outer body 11 along with a nonaqueous organic electrolyte. The positive electrode is produced by coating the surface of a sheet-like collector 21 with a positive electrode material 22 containing a positive electrode active material capable of absorbing lithium ions, and the negative electrode is produced by coating one principal surface 34 side of a sheet-like collector 31 with a negative electrode material 32 containing a carbon active material capable of absorbing and desorbing lithium ions. A negative electrode active material 33 composed of lithium metal or a lithium alloy is stuck to the other surface 35 side of the negative electrode collector. 【課題】低温環境下でも大電流放電が可能なリチウム一次電池を提供する。【解決手段】シート状の正極２０とシート状の負極３０がセパレータ４０を介して対向配置されてなる電極体１０を非水系有機電解液とともに外装体１１内に封入してなり、正極は、リチウムイオンの吸蔵が可能な正極活物質を含む正極材料２２をシート状の集電体２１表面に塗布してなり、負極は、表裏を貫通する孔が形成されたシート状の集電体３１の一主面３４側にリチウムイオンの吸蔵と離脱が可能な炭素活物質を含む負極材料３２が塗布されるとともに、負極集電体の他方の面３５側にリチウム金属あるいはリチウム合金からなる負極活物質３３が貼着されてなるリチウム一次電池１としている。【選択図】 図１