Journal
CATALYSIS COMMUNICATIONS
Volume 164, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.catcom.2022.106426
Keywords
Water electrolysis; Hydrogen evolution reaction; Oxygen evolution reaction; Bifunctional electrocatalyst; Multi-metallic electrocatalysts
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Funding
- National Natural Science Foundation of China [22075159]
- Taishan Scholar Program [2019KJC023]
- Youth Innovation Team Project of Shandong Provincial Education Department
- National Natural Science Foundation of China [22075159]
- Taishan Scholar Program [2019KJC023]
- Youth Innovation Team Project of Shandong Provincial Education Department [22075159]
- [tsqn202103058]
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An efficient and durable bifunctional Ni-Fe/NiMoNx electrocatalyst has been synthesized, exhibiting significant performances in both hydrogen and oxygen evolution reactions. It requires low energy input for overall water splitting.
Fabricating bifunctional electrocatalysts for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) is challengeable. Herein, an efficient and durable bifunctional Ni-Fe/NiMoNx electrocatalyst has been synthesized on nickel foam. This electrocatalytic system exhibits significant HER and OER performances with overpotentials of 49 and 260 mV at 20 mA cm-2, respectively. For overall water splitting, Ni-Fe/NiMoNx electrodes require only 1.54 V for 10 mA cm-2. This enhanced HER and OER electrocatalytic performance is due to the combined effect of multiple active components formed after NH3 treatment. This work provides a new strategy for the rational design of bifunctional electrocatalysts for overall water splitting.
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