期刊
ACS ENERGY LETTERS
卷 4, 期 4, 页码 805-810出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsenergylett.9b00348
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资金
- Australian Research Council [DP160104866, DE160101163, FL170100154]
- Australian Research Council [DE160101163] Funding Source: Australian Research Council
Developing efficient and low-cost electrocatalysts for the hydrogen evolution reaction (HER) is important for clean energy systems. Non-noble transition metals are the most promising candidates for replacement of conventional Pt group catalysts for the HER. However, most non-noble metals show poor HER activity due to their intrinsic electronic structures. Herein, we use a multifaceted Dual doping Single doping heteroatom doping method (nitrogen, sulfur, and phosphorus) to directly and continuously fine-tune the electronic structure and HER activity of non-noble metals without changing their chemical composition. As a proof-of-concept, a nitrogen and phosphorus dual-doped Ni catalyst is explored by precisely manipulating doping modes, revealing the best HER performance among all doped Ni catalysts tested. The doping-induced charge redistribution in the Ni metal significantly influences its catalytic performance for the HER in alkaline media, which is confirmed by merging theoretical calculation with synchrotron-based spectroscopy. The principle that can bridge the doping modes and HER activity of the doped catalysts is built with a volcano relationship.
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