POWER STORAGE DEVICE

• Main Authors: AKIYAMA YASUNARI, YAMASHITA YUSUKE, OKUDA MOTOAKI
• Format: Patent
• Language: English; Japanese
• Published: 11.04.2016
• Subjects: BASIC ELECTRIC ELEMENTS; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

PROBLEM TO BE SOLVED: To suppress the occurrence of damage to a separator even with a foreign material put between an electrode and the separator.SOLUTION: A secondary battery 10 comprises: an electrode assembly 12 having electrode housing separators 25 each housing a positive electrode 21 therein, and negative electrodes 26 different from the positive electrodes 21 in polarity. The electrode assembly 12 has a layered structure including the electrode housing separators 25 and the negative electrodes 26 which are alternately laminated. A face of each electrode housing separator 25 facing the negative electrode 26 is coated Teflon. Thus, the coefficient of static friction between the electrode housing separator 25 and the negative electrode 26 is adjusted to be 0.1 or less.SELECTED DRAWING: Figure 3 【課題】電極とセパレータとの間に異物が混入したとしても、セパレータに破損が生じることを抑制すること。【解決手段】二次電池１０の電極組立体１２は、内部に正極電極２１を収納した電極収納セパレータ２５と、正極電極２１とは極性の異なる負極電極２６と、を有する。電極組立体１２は、複数の電極収納セパレータ２５と複数の負極電極２６とを交互に積層して層状とした構造である。電極収納セパレータ２５の負極電極２６に対向する面にはテフロン加工が施されている。これにより、電極収納セパレータ２５と負極電極２６との間の静摩擦係数は０．１以下に調整されている。【選択図】図３