Catalytic production of impurity-free V^3.5+ electrolyte for vanadium redox flow batteries.

ABSTRACT: The vanadium redox flow battery is considered one of the most promising candidates for use in large-scale energy storage systems. However, its commercialization has been hindered due to the high manufacturing cost of the vanadium electrolyte, which is currently prepared using a costly electrolysis method with limited productivity. In this work, we present a simpler method for chemical production of impurity-free V^3.5+ electrolyte by utilizing formic acid as a reducing agent and Pt/C as a catalyst. With the catalytic reduction of V⁴⁺ electrolyte, a high quality V^3.5+ electrolyte was successfully produced and excellent cell performance was achieved. Based on the result, a prototype catalytic reactor employing Pt/C-decorated carbon felt was designed, and high-

SUBMITTER: Heo J 

PROVIDER: S-EPMC6764956 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature