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1. Coupling homogeneous and heterogeneous catalysis for enhancement of HCOOH electrooxidation via the dehydrogenation pathway.

Author

Li, Yan, Li, Rui, Liu, Bin Hong, and Li, Zhou Peng

Subjects
*HETEROGENEOUS catalysis, *HOMOGENEOUS catalysis, *DEHYDROGENATION, *POWER density, *FUEL cells, *OXIDATION of formic acid, *HETEROGENEOUS catalysts
Abstract

The homogeneous/heterogeneous catalyst combination of VO2+ in anolyte with Pd/C at the anode is first introduced in a formic acid fuel cell to enhance HCOOH electrooxidation. The VO2+/Pd catalyst combination establishes a stepwise reaction pathway involving HCOOH dehydrogenation to form V3+ from VO2+ reduction and subsequent V3+ electrooxidation to regain VO2+. The fuel cell with the VO2+/Pd combination presents a peak power density of 341.3 mW cm−2 and stable power density higher than 30 mW cm−2. [ABSTRACT FROM AUTHOR]

Published
2023
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