4.6 Article

A high-performance metal-free hydrogen-evolution reaction electrocatalyst from bacterium derived carbon

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JOURNAL OF MATERIALS CHEMISTRY A
卷 3, 期 14, 页码 7210-7214

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ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ta00966a

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We report a sustainable approach to obtain carbon materials with nitrogen and phosphorus dual functionalities from a common bacterium strain (S. aureus) as a highly efficient hydrogen-evolution reaction (HER) catalyst. With mesoporous structure introduced by ZnCl2 salt and cathodic activation, it demonstrates an onset overpotential as low as 76 mV, a Tafel slope of 58.4 mV dec(-1) and a large normalized exchange current density of 1.72 x 10(-2) mA cm(-2), which are comparable to those of hitherto best metal-free and well-fabricated metallic HER catalysts.

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