期刊
APPLIED CATALYSIS B-ENVIRONMENTAL
卷 305, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.apcatb.2022.121088
关键词
Amorphous Rh(OH)(3) scabbards; Crystalline NiTe nanorods; PH-universal; Hydrogen evolution reaction; Aerophobic
资金
- National Key R&D Program of China [2017YFE0120500]
- National Natural Science Foundation of China [51972129, 21725102]
- South Xinjiang Innovation and Development Program of Key Industries of Xinjiang Production and Construction Corps [2020DB002]
- Key Research and Development Program of Hubei [2020BAB079]
- Fundamental Research Funds for the Central Universities [2019KFYXMBZ076]
- Hubei ChuTian Young Scholar Program
This research reports a unique structure consisting of nickel tellurium nanorods enclosed by rhodium hydroxide, which is synthesized through a chemical process. The structure exhibits superhydrophilicity and aerophobicity, enabling efficient hydrogen electrocatalytic reactions in alkaline, neutral, and acidic media. The findings provide insights for the design of high-performance electrocatalysts.
Design of high-performance pH-universal electrocatalysts is critical to practical large-scale hydrogen generation as a carbon-neutral fuel, yet challenging. Herein, we report an unique motif with crystalline nickel tellurium nanorods enclosed by amorphous rhodium hydroxide (a-Rh(OH)(3)/NiTe), formed through a hydrothermal synthesis and a subsequent chemical etching process, to address this challenge. The as-prepared a-Rh(OH)(3)/NiTe cathode enables a current density of 100 mA cm(-2) with low overpotentials of 51, 109, and 64 mV for HER in alkaline, neutral and acidic media, respectively. As revealed by density functional theory (DFT) calculations, the electronic interactions between a-Rh(OH)(3) and NiTe enhance the performance of Rh active sites. More importantly, the motif possesses superhydrophilicity and aerophobicity features, which not only facilitates the access to electrolytes but also ensures the fast release of hydrogen bubbles, endowing the electrocatalyst with advanced pH-universal HER activity. This work provides insights for the design of highly efficient electrocatalysts for hydrogen evolution at both molecular and mesoscopic levels.
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