Journal
ACS NANO
Volume 8, Issue 5, Pages 5290-5296Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nn501434a
Keywords
dual-doped graphene; synergistic catalysis; hydrogen evolution; metal-free catalysis; theoretical prediction
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Funding
- Australian Research Council [DP130104459]
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Replacement of precious Pt catalyst with cost-effective alternatives would be significantly beneficial for hydrogen production via electrocatalytic hydrogen evolution reaction (HER). All candidates thus far are exclusively metallic catalysts, which suffer inherent corrosion and oxidation susceptibility during acidic proton-exchange membrane electrolysis. Herein, based on theoretical predictions, we designed and synthesized nitrogen (N) and phosphorus (P) dual-doped graphene as a nonmetallic electrocatalyst for sustainable and efficient hydrogen production. The N and P heteroatoms could coactivate the adjacent C atom in the graphene matrix by affecting its valence orbital energy levels to induce a synergistically enhanced reactivity toward HER. As a result, the dual-doped electrocatalytic HER activity than single-doped ones and comparable performance to some of the traditional metallic catalysts. graphene showed higher
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