Improved radical stability of viologen anolytes in aqueous organic redox flow batteries

Bo Hu; Yijie Tang; Jian Luo; Grant Grove; Yisong Guo; T Leo Liu

doi:10.1039/c8cc02336k

Improved radical stability of viologen anolytes in aqueous organic redox flow batteries

Chem Commun (Camb). 2018 Jun 19;54(50):6871-6874. doi: 10.1039/c8cc02336k.

Authors

Bo Hu¹, Yijie Tang, Jian Luo, Grant Grove, Yisong Guo, T Leo Liu

Affiliation

¹ Department of Chemistry and Biochemistry, Utah State University, Logan, USA. leo.liu@usu.edu.

PMID: 29741542
DOI: 10.1039/c8cc02336k

Abstract

A high voltage (1.38 V) total organic aqueous redox flow battery is reported using 1,1'-bis[3-(trimethylammonio)propyl]-4,4'-bipyridinium tetrachloride ((NPr)2V) as an anolyte and 4-trimethylammonium-TEMPO chloride (NMe-TEMPO) as a catholyte. The exceptional radical stability of [(NPr)2V]+˙ enabled the flow battery in achieving 97.48% capacity retention for 500 cycles and a power density of 128.2 mW cm-2.