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Zn-based eutectic mixture as anolyte for hybrid redox flow batteries.

ABSTRACT: Developing greener batteries with new chemistries is a formidable challenge, and a major focus for years to come. Redox flow batteries are receiving increasing research interest for grid-scale electrochemical energy storage owing to their unique architecture. However, challenges still remain by their low energy density as well as corrosive and/or toxic electrolytes. An anolyte based on aprotic Zn deep-eutectic-solvent, which uses low cost, abundant and environmentally benign materials, exhibits a utilizable concentration of Zn²⁺ ca. 1.7 M, resulting in a reversible volumetric capacity of ca. 90 A h·L^-1. Combined with high efficiencies and relatively low redox potential of -1.12 V vs. Ag/AgCl, such an anolyte provides an alternative way to explore a family of anolytes using new chemistries for rechargeable Zn batteries that meet the criteria for grid-scale electrical energy storage.

SUBMITTER: Wang Y

PROVIDER: S-EPMC5893549 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature

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Zn-based eutectic mixture as anolyte for hybrid redox flow batteries.

Wang Yiyu Y Niu Zhihui Z Zheng Qi Q Zhang Changkun C Ye Jing J Dai Gaole G Zhao Yu Y Zhang Xiaohong X

Scientific reports 20180410 1

Developing greener batteries with new chemistries is a formidable challenge, and a major focus for years to come. Redox flow batteries are receiving increasing research interest for grid-scale electrochemical energy storage owing to their unique architecture. However, challenges still remain by their low energy density as well as corrosive and/or toxic electrolytes. An anolyte based on aprotic Zn deep-eutectic-solvent, which uses low cost, abundant and environmentally benign materials, exhibits ...[more]

PMID: 29636487

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