Title:
ZINC-IODINE FLOW BATTERY
Document Type and Number:
WIPO Patent Application WO/2019/091304
Kind Code:
A1
Abstract:
The present invention relates to a zinc-iodine flow battery, which is a zinc-iodine single flow battery or a zinc-iodine dual flow battery and comprises a pile composed of one single battery or two or more single battery circuits connected in series. The single battery comprises a positive electrode terminal plate, a positive and a negative electrode current collector, a positive electrode having a flow frame, a membrane, a negative electrode having a flow frame, and a negative electrode terminal plate which are sequentially laminated. In the electrolyte solution in a negative electrode electrolyte solution storage tank, the electrolyte circulates between a negative electrode cavity and the storage tank by means of a pump, and a branch pipeline for the positive electrode electrolyte circulation is provided on a negative electrode pipeline. The positive electrolyte solution and the negative electrolyte solution of the dual flow battery are the same, both being a mixed aqueous solution of an iodine salt and a zinc salt, and the membrane is a porous membrane free of an ion exchange group. Furthermore, the positive and negative electrolyte solutions are both neutral, overcoming the corrosiveness problem of strong acid and strong alkaline electrolytes of the conventional flow batteries, and meanwhile, the battery has high current density, long cycle life and low cost.
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Inventors:
LI XIANFENG (CN)
XIE CONGXIN (CN)
ZHANG HUAMIN (CN)
XIE CONGXIN (CN)
ZHANG HUAMIN (CN)
Application Number:
PCT/CN2018/112535
Publication Date:
May 16, 2019
Filing Date:
October 30, 2018
Export Citation:
Assignee:
DALIAN INST CHEM & PHYSICS CAS (CN)
International Classes:
H01M8/18
Foreign References:
| CN105742656A | 2016-07-06 | |||
| CN206022528U | 2017-03-15 | |||
| CN102479968A | 2012-05-30 | |||
| KR20170024176A | 2017-03-07 |
Other References:
LI, BIN: "Ambipolar zinc-polyiodide electrolyte for a high-energy density aqueous redox flow battery", NATURE COMMUNICATIONS, vol. 6, no. 1, 24 February 2015 (2015-02-24), XP055548294
Attorney, Agent or Firm:
SHENYANG PATENT & TRADEMARK AGENCY ACADEMIA SINICA (CN)
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