Nitrogen and Sulfur Codoped Graphite Foam as a Self‐Supported Metal‐Free Electrocatalytic Electrode for Water Oxidation |
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Authors: | Xiaowen Yu Miao Zhang Ji Chen Yingru Li Gaoquan Shi |
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Institution: | Department of Chemistry, Tsinghua University, Beijing, China |
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Abstract: | The oxidation of water to produce oxygen gas is related to a variety of energy storage systems. Thus, the development of efficient, cheap, durable, and scalable electrocatalysts for oxygen evolution reaction (OER) is of great importance. Here, a high‐performance OER catalyst, nitrogen and sulfur codoped graphite foam (NSGF) is reported. This NSGF is prepared from commercial graphite foil and directly applied as an electrocatalytic electrode without using a current collector and a polymeric binder. It exhibits an extremely low overpotential of 0.380 V to reach a current density of 10 mA cm?2 and shows fast kinetics with a small Tafel slope of 96 mV dec?1 in 0.1 m KOH. This electrocatalytic performance is superior or comparable to those of previously reported metal‐free OER catalysts. |
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Keywords: | electrocatalysis graphite foams codoping water oxidation electrode materials |
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