Affiliation:
1. State Key Laboratory of Crystal Materials Shandong University Jinan Shandong 250100 China
2. Shenzhen Research Institute Shandong University Shenzhen Guangdong 518057 China
3. Institute for Advanced Interdisciplinary Research (IAIR) University of Jinan Jinan Shandong 250022 China
Abstract
The great promise of the combination of urea oxidation reaction (UOR) with hydrogen evolution reaction (HER) to simultaneously achieve wastewater treatment and hydrogen production calls for the rational design of high‐performance electrocatalysts. Herein, the reconstruction with the formation of Ni2P and Mo2O72− on the surface can largely enhance the alkaline HER activity of P‐NiMoO4 by on‐site electrochemical activation strategy. Systematic experimental results indicate that the reconstruction process enables the exposure of additional Ni sites and the adjustment of hydrogen adsorption to facilitate HER kinetics. Ultimately, a highly efficient alkaline HER electrode with low overpotential of −48.9 mV for 10 mA cm−2 is achieved. More importantly, a UOR electrolyzer assembled with A‐P‐NiMoO4 as the cathode and P‐NiMoO4 as the anode exhibits impressive performance with a small cell voltage of 1.363 V for 10 mA cm−2. The application of the fabricated electrodes in a practical cell driven by a commercial dry battery (1.5 V) demonstrates efficient and stable hydrogen production, making the developed strategy promising for the rational design of highly active electrocatalysts for green hydrogen production.
Funder
National Natural Science Foundation of China
Shandong Provincial Natural Science Foundation
Subject
General Earth and Planetary Sciences,General Environmental Science
Cited by
10 articles.
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