期刊
RSC ADVANCES
卷 12, 期 22, 页码 13639-13644出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2ra00968d
关键词
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资金
- National Key R & D Program Key Scientific Issues of Transformative Technology [2020YFA0710301]
- National Natural Science Foundation of China [21972078, 51972195, 21573135, 51602179]
- Natural Science Foundation of Shandong Province [ZR2019MEM004]
- Shandong University Multidisciplinary Research and Innovation Team of Young Scholars [2020QNQT11]
- Qilu Young Scholar Program of Shandong University
In this study, a novel NiCoP-CeO2 composite was successfully constructed using a simple hydrothermal method and thermal phosphating strategy. The reason for the performance improvement was analyzed through theoretical calculations and experimental characterization. CeO2 may cause a confinement effect, contributing to sustaining the nanosheet morphology of the catalyst and minimizing the OER potential.
In this study, a novel NiCoP-CeO2 composite was constructed on a Ni foam by a simple hydrothermal method and thermal phosphating strategy. In the OER test, NiCoP-CeO2 exhibited a low overpotential of 217 mV at 10 mA cm(-2), 45 mV dec(-1) of Tafel slopes. With the help of theoretical calculations and experimental characterization, the reason for performance improvement was analyzed in depth. The results show that CeO2 leads to a confinement effect, maintaining the nanosheet morphology of NiCo-LDHs, which contributes to sustaining the catalyst in favourable contact with H2O and minimizing the OER potential. Furthermore, by loading CeO2 onto NiCoP, the hydrophilicity of the catalyst is significantly enhanced. Our work provides an ingenious synthesis strategy for the preparation of efficient and inexpensive electrocatalytic materials.
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