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

Autor: Yiyu Wang, Zhihui Niu, Qi Zheng, Changkun Zhang, Jing Ye, Gaole Dai, Yu Zhao, Xiaohong Zhang
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: Scientific Reports, Vol 8, Iss 1, Pp 1-8 (2018)
Druh dokumentu: article
ISSN: 2045-2322
DOI: 10.1038/s41598-018-24059-x
Popis: 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.
Databáze: Directory of Open Access Journals