Title:
VANADIUM ELECTROLYTE, METHOD FOR PRODUCING SAME AND VANADIUM REDOX BATTERY
Document Type and Number:
WIPO Patent Application WO/2015/025961
Kind Code:
A1
Abstract:
[Problem] To provide: a vanadium electrolyte which has high storage capacity and high energy density and is not susceptible to increase in the electrolyte resistance and decrease in the ion conductivity; a method for producing this vanadium electrolyte; and a vanadium redox battery.
[Solution] The above-described problem is solved by a vanadium electrolyte (2, 4), which is a defoamed electrolyte in a paste form and contains vanadium ions within the density range of from 3.5 mol/L to 6.5 mol/L (inclusive), sulfate ions and a conductive powder. In this connection, it is preferable that the paste-like electrolyte contains phosphoric acid. A vanadium redox battery (10) comprises at least a single cell structure wherein a positive electrode (1), a vanadium electrolyte (2) for positive electrodes obtained by oxidatively electrolyzing a vanadium electrolyte, a diaphragm (3), a vanadium electrolyte (4) for negative electrodes obtained by reductively electrolyzing a vanadium electrolyte, and a negative electrode (5) are arranged in this order.
Inventors:
TEZUKA YOSHIAKI (JP)
Application Number:
PCT/JP2014/072053
Publication Date:
February 26, 2015
Filing Date:
August 22, 2014
Export Citation:
Assignee:
NEW ENERGY SUPPORT ORGANIZATION (JP)
International Classes:
H01M4/04; H01M4/58; H01M8/20; H01M10/36; H01M10/38
Foreign References:
| JP2012054035A | 2012-03-15 | |||
| JPH11213990A | 1999-08-06 | |||
| JP2006261008A | 2006-09-28 | |||
| JP2011198692A | 2011-10-06 | |||
| JPH0864223A | 1996-03-08 |
Attorney, Agent or Firm:
YOSHIMURA, SHUNICHI (JP)
Toshikazu Yoshimura (JP)
Toshikazu Yoshimura (JP)
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