Co2P4O12/NF纳米线阵列的制备与电解水性能研究

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摘要以CoCl₂·6H₂O为原料,通过溶剂热法和磷化工艺在泡沫镍表面构建Co₂P₄O₁₂阵列,Co₂P₄O₁₂纳米线直径约200 nm。采用SEM、TEM和XRD进行形貌和晶体学特性表征,并利用三电极体系在碱性环境下测量电化学性能。在析氢过程中,只需要122 mV过电位就能达到10 mA·cm^-2电流密度。析氧过程中,仅需要334 mV的过电位就能达到15 mA·cm^-2电流密度。组装的电解池在15 mA·cm^-2的电流密度下工作40 h后电解槽电压没有发生明显变化,展现出很好的稳定性。Co₂P₄O₁₂/NF是一种有潜力的双功能催化剂。

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	张卫国
	卢宜鹏
	王宏智
	姚素薇

关键词： Co₂P₄O₁₂ 纳米线阵列析氢过程析氧过程双功能催化剂

Abstract： Co₂P₄O₁₂ array was constructed on the surface of nickel foam by solvothermal method and phosphating at 300 ℃ using CoCl₂·6H₂O as raw material. The diameter of Co₂P₄O₁₂ nanowires is about 200 nm. SEM, TEM and XRD were used to characterize the morphology and crystallographic characteristics, and a three-electrode system was constructed to measure the electrochemical performance in alkaline environment. In the process of hydrogen evolution, only 122 mV overpotential is needed to achieve a current density of 10 mA·cm^-2. In the process of oxygen evolution, only 334 mV of overpotential is needed to reach the current density of 15 mA·cm^-2. The assembled electrolytic cell works for 40 h at the current density of 15 mA·cm^-2, and the cell voltage didn’t change significantly, showing good stability. The above tests proved that Co₂P₄O₁₂/NF is a potential bifunctional catalyst.

Keywords： Co₂P₄O₁₂ nanowire array hydrogen evolution process oxygen evolution process bifunctional catalyst

Received 2021-04-14;

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Corresponding Authors: 王宏智,副教授,E-mail:wanghz@tju.edu.cn Email: wanghz@tju.edu.cn

About author: 张卫国(1972-),男,博士,副教授,主要从事新能源材料研究。

引用本文:

张卫国, 卢宜鹏, 王宏智, 姚素薇.Co₂P₄O₁₂/NF纳米线阵列的制备与电解水性能研究[J]. 化学工业与工程, 2023,40(2): 17-24

ZHANG Weiguo, LU Yipeng, WANG Hongzhi, YAO Suwei.Co₂P₄O₁₂/NF nanowire arrays for water splitting in an alkaline environment[J]. Chemcial Industry and Engineering, 2023,40(2): 17-24

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