Constructing Stable MoOx-NiSx Film via Electrodeposition and Hydrothermal Method for Water Splitting

Autor: Shihu Zhu, Tiantian Liu, Shuang Yu, Huijing Yang, Qimeng Sun, Jin You Zheng
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Catalysts, Vol 13, Iss 11, p 1426 (2023)
Druh dokumentu: article
ISSN: 13111426
2073-4344
DOI: 10.3390/catal13111426
Popis: The hydrothermal method is a frequently used approach for synthesizing HER electrocatalysts. However, a weak tolerance to high temperature is an intrinsic property of carbon cloth (CC) in most situations, and CC-based catalysts, which require complex technological processes in low-temperature environments, exhibit weak stability and electrochemical performance. Hence, we provide a new solution for these issues. In this work, MoO3-NiSx films of 9H5E-CC catalysts are synthesized, first through electrodeposition to form Ni particles on CC and then through a hydrothermal reaction to reform the reaction. The advantages of this synthetic process include mild reaction conditions and convenient operation. The obtained MoO3-NiSx film presents excellent catalytic activity and stability for HER. MoO3-NiSx film requires only a low overpotential of 142 mV to drive 10 mA cm−2 for HER in 1.0 m KOH, and the obtained 9H5E-CF film only needs 294 mV to achieve 50 mA cm−2 for OER. Remarkably, they also show excellent OER, HER, and full water splitting long-term electrochemical stability, maintaining their performance for at least 72 h. This work can be expanded to provide a new strategy for the fabrication of stable, high-performing electrodes using simple, mild reaction conditions.
Databáze: Directory of Open Access Journals
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