期刊
CHEMICAL COMMUNICATIONS
卷 54, 期 84, 页码 11873-11876出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8cc06802j
关键词
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资金
- Vinnova
- Knut and Alice Wallenberg Foundation
- Erasmus+ scholarship program of the European Commission
Single-compartment hydrogen peroxide fuel cells have recently emerged as a promising energy conversion platform since H2O2 is a high energy-density liquid that functions as both fuel and oxidizer. Finding suitable electrocatalysts is challenging since most metallic electrodes also catalyze the disproportionation reaction of H2O2 into H2O and O-2, representing a significant loss mechanism in peroxide fuel cells. Herein we demonstrate that the conducting polymer poly(3,4-ethylenedioxythiophene), PEDOT, is a versatile electrocatalyst for peroxide fuel cells without generating losses due to disproportionation. We find that PEDOT is a cathodic catalyst for reduction of peroxide to water, performing at a level on par with the best reported inorganic catalysts. Using PEDOT as the cathode and nickel as the anode material, open circuit potentials in the range of 0.5-0.6 V are possible, with power densities of 0.20-0.30 mW cm(-2). We provide evidence to understand mechanistically how PEDOT functions as a catalyst for hydrogen peroxide reduction to water. The result of our efforts is a scalable hydrogen peroxide fuel cell cathode, which serves to demonstrate also the capabilities of organic semiconducting materials as electrocatalysts.
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