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梯度化BiVO双光电极用于高效的光电化学水分离

Xuhao Yang¹, Shuang Liang¹, Jiaming Miao¹

¹College of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, P.R. China.

Chemphyschem : a European journal of chemical physics and physical chemistry

|September 27, 2024

概括

这项研究增强了使用梯度兴奋剂和堆叠电极的水分 bismuth vanadate (BiVO4) 光电极. 这些改进提高了光电流和充电运输效率,以改善太阳能燃料生产.

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
可再生能源是可再生能源的来源.

背景情况:

岩瓦纳酸盐 (BiVO4) 是光电化学 (PEC) 水分的关键材料.
它的应用受到负载载体运输不良和短扩散长度的阻碍.

研究的目的:

为了提高BiVO4光电极的性能,以实现高效的PEC水分.
为了解决负载载体运输和扩散长度方面的局限性.

主要方法:

用 (W) 进行BiVO4的渐变化,重量为3-2%.
采用背对背堆叠配置用于透明光电极.
使用Co-Pi催化剂和反射涂层进行加载.

主要成果:

优化带曲由于W兴奋剂增强的电荷载体运输.
堆叠配置减少了载波扩散长度,而没有显著的光子损失.
获得的光电流密度为W:BiVO4的2.20 mA cm−2和堆叠的W:BiVO4的4.63 mA cm−2与催化剂和涂层.
经过10小时的长期稳定性.

结论:

梯度W兴奋剂和背对背堆叠的联合策略显著提高了BiVO4光电极的性能.
这种方法为有效和稳定的太阳能分水提供了可行的途径.
进一步优化可能会导致可再生能源的实际应用.

关键词:

比斯密瓦纳达特的时间渐变性兴奋剂的使用.光电化学的光电化学.一起使用的光电极 (Tandem photoanode).水的分裂,就是水的分裂.

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