ELECTRODE FOR ELECTROCHEMISTRY ELEMENT AND ELECTROCHEMISTRY ELEMENT USING IT

摘要

PROBLEM TO BE SOLVED: To solve the problem that the electrical bonding between the active material and a collector of an electrode for electrochemistry element becomes weaker by repeating electric charging and discharging cycle, and that an electrochemistry element reduces its capacity.

SOLUTION: Firstly, the proportion D/D0of the bulk density D(gcm-3) of an active material against the theoretical capacity D0(gcm-3) of an active material crystal body used to be D/D0≤0.8, but the active material is so formed that the proportion is 0.9≤D/D0≤1. Secondly, the material of a collector is a resin film.

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