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An Aqueous Redox Flow Battery with a Tungsten–Cobalt Heteropolyacid as the Electrolyte for both the Anode and Cathode
Author(s) -
Liu Yiyang,
Lu Shanfu,
Wang Haining,
Yang Chunmei,
Su Xin,
Xiang Yan
Publication year - 2017
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201601224
Subject(s) - redox , flow battery , anode , electrolyte , battery (electricity) , cathode , faraday efficiency , aqueous solution , cobalt , materials science , computer science , nanotechnology , chemistry , physics , electrode , thermodynamics , power (physics) , metallurgy
A tungsten–cobalt heteropolyacid simultaneously acts as the electrolyte in both the positive and negative compartments of an aqueous redox flow battery. The heteropolyacid provides all of the necessary redox pairs and charge carriers for the battery. A high coulombic efficiency of 99% and an energy efficiency of 86% are achieved. Additionally, at a current density of 25 mA cm –2 , a specific energy of 15.4 W h L –1 is obtained.