An electrolysis solution and a redox flow cell

Japanese Patent JP6204069

B2

PROBLEM TO BE SOLVED: To provide: an electrolyte which can achieve a high energy density, and long-term stability at high and low temperatures; and a redox flow battery using such an electrolyte.SOLUTION: An electrolytic device has a cell 1. The cell includes: a positive electrode cell room including a positive electrode composed of a carbon electrode; a negative electrode cell room including a negative electrode composed of a carbon electrode; and an electrolytic film serving as a diaphragm for isolating and separating the positive electrode cell room and the negative electrode cell room from each other. Here, an electrolyte that the positive electrode cell room includes is referred to as "positive electrode electrolyte", and an electrolyte that the negative electrode cell room includes is referred to as "negative electrode electrolyte". The positive electrode electrolyte and the negative electrode electrolyte are stored in a positive electrode electrolyte tank 2 and a negative electrode electrolyte tank 3 respectively, and delivered to the respective cell chambers through liquid feeding tubes 5 by liquid feeding tube pumps 4 and others. The electrolytes each contain water, vanadium ions, and a sulfonic group and/or polymer having a phosphonic acid group.

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Takashi Makino
Hiroto Iizuka

JP2013109191A

September 27, 2017

May 23, 2013

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ASAHI KASEI KABUSHIKI KAISHA

H01M8/18; C01G31/00

JP9507950A
JP2014157793A
JP2014235946A
JP11339835A

Yoshiyuki Inaba
Toshifumi Onuki
Akihiko Eguchi
Kazuhiko Naito

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