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混合金属/脊柱氧化物涂层用微孔阵列来刺激光热增强氧气进化反应

Yuhao Chen¹, Jiang Xu¹, Yujie Chen²

¹College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, P. R. China.

Small (Weinheim an der Bergstrasse, Germany)

|August 18, 2023

概括

在Ti电极上的混合ConiFe/Fe,Mo,Al2O4涂层通过微孔阵列显著增强了氧演化反应 (OER). 光辅助通过利用光热效应进一步提高了催化效率.

科学领域:

材料科学材料科学材料科学
电化学电化学电化学
催化剂是一种催化剂.

背景情况:

氧进化反应 (OER) 对能量转化至关重要.
开发高效的OER电催化剂至关重要.
(Ti) 基板在电极应用中很常见.

研究的目的:

在Ti基板上开发混合CoNiFe/Fe,Fe,Mo,Al) 2O4涂层,以增强OER.
为了研究微孔阵列 (MCA) 几何学对电化学表面积的影响.
为了评估照片辅助的OER性能和光热效应.

主要方法:

在Ti基板上沉积混合ConiFe/Fe,Fe,Mo,Al) 2O4涂层.
在涂层表面制造微孔阵列 (MCAs).
电极的电化学表征在1.0米KOH.
太阳光照明测试以评估光热和光辅助的OER性能.

主要成果:

CoNiFe/Fe,Fe,Mo,Al) 2O4/Ti电极对OER呈现了较低的超电位 (245 mV在10 mA cm-2,333 mV在100 mA cm-2).
MCAs增强了阳光捕获,导致温度升高高达108.2°C.
照片辅助的OER显示了进一步的改善,减少了超电位 (234 mV在10 mA cm-2,296 mV在100 mA cm-2) 和较低的Tafel斜率 (40.9 mV dec-1).

结论:

混合涂层与MCAs有效地增强了OER动力学.
光热效应有助于改善催化活性.
这种复合材料涂层为高效的OER催化提供了一个有希望的策略.

关键词:

Ti电极是Ti的电极.混合金属/螺旋涂层的混合金属/螺旋涂层微孔阵列中的微孔阵列.氧气进化反应反应氧气进化反应用光热辅助的光热技术进行.

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