期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 58, 期 16, 页码 5432-5437出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201901010
关键词
electrocatalysis; heterostructures; hydrogen evolution reaction; nickel bicarbonate; platinum
资金
- Australian Research Council (ARC) DECRA Grant [DE160100596]
- AIIM FOR GOLD Grant
- National Natural Science Foundation of China [11875258, 11505187, 41701359]
Heterostnictured nanomaterials, generally have physicochemical properties that differ from those of the individual components, and thus have potential in a wide range of applications. New platinum (Pt)/nickel bicarbonate (Ni(HCO3)(2)) heterostructures are designed for an efficient alkaline hydrogen evolution reaction (HER). Notably, the specific and mass activity of Pt in Pt/Ni(HCO3)(2) are substantially improved compared to the bare Pt nanoparticles (NPs). The Ni(HCO3)(2) provides abundant water adsorption/dissociation sites and modulate the electronic structure of Pt, which determine the elementary reaction kinetics of alkaline HER. The Ni(HCO3)(2) nanoplales offer a platform for the uniform dispersion of Pt NPs, ensuring the maximum exposure of active sites. The results demonstrate that, Ni(HCO3)(2) is an effective catalyst promoter for alkaline HER.
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