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1. (WO2018101224) BIPOLAR ELECTRODE FOR NICKEL-HYDROGEN STORAGE BATTERY AND NICKEL-HYDROGEN STORAGE BATTERY

Pub. No.:    WO/2018/101224    International Application No.:    PCT/JP2017/042483
Publication Date: Fri Jun 08 01:59:59 CEST 2018 International Filing Date: Wed Nov 29 00:59:59 CET 2017
IPC: H01M 10/30
H01M 4/24
H01M 4/32
Applicants: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
株式会社豊田自動織機
Inventors: SUGIMOTO Yuki
杉本祐樹
MINAGATA Atsushi
南形厚志
Title: BIPOLAR ELECTRODE FOR NICKEL-HYDROGEN STORAGE BATTERY AND NICKEL-HYDROGEN STORAGE BATTERY
Abstract:
Provided is a bipolar electrode that includes: a metal foil; a first active substance layer disposed on the front side surface of the metal foil; and a second active substance layer having a larger surface area than the first active substance layer and disposed on the back side surface of the metal foil. The second active substance layer has a low-density region disposed at the peripheral-edge thereof in plan view as seen from the thickness direction of the metal foil, and a high-density region disposed inward from the low-density region and having a smaller void percentage than the low-density region.