光热CuS作为BiVO4光电极上的孔转移层,用于有效的太阳能水氧化
Jingkun Wang1, Naik Muhammad1, Zijing Chuai1
1Taiyuan University of Technology, College of materials science amd emgineering, 79 Yingze West Street, Taiyuan, Shanxi Province, Taiyuan, CHINA.
Angewandte Chemie (International ed. in English)
|June 12, 2025
概括
硫化铜 (CuS) 增强了木瓦纳酸盐 (BiVO4) 光电极,用于高效的太阳能到 (STH) 生产. CuS层改善了孔运输,并利用光热效应,提高了水分裂性能.
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
- 光催化作用的光催化
背景情况:
- 木瓦纳酸盐 (BiVO4) 中的缓慢孔运输动力学限制了光电化学 (PEC) 水分裂效率.
- 有效的太阳能转化为 (STH) 需要克服光电极的电荷重组和传输限制.
研究的目的:
- 为了提高BiVO4光电极的性能,用于PEC水分.
- 为了研究硫化铜 (CuS) 孔转移层 (HTL) 和光热性能的协同效应.
主要方法:
- 制造BiVO4/CuS/NiFeCoOx光电阳极. 这些产品包括:
- 光电化学性能的表征. 光电化学性能.
- 使用局部表面等离子体共振 (LSPR) 进行光热增强.
- 密度函数理论 (DFT) 计算用于机械洞察力.
主要成果:
- 该CuS HTL促进了孔运输和抑制电荷重组.
- 来自CuS的光热效应增强了水的氧化和电荷的移动性.
- 优化的BiVO4/CuS/NiFeCoOx光电极在1.23VVRHE时实现了6.56mA cm-2的光电密度.
- 当与Si太阳能电池相结合时,获得了7.17%的STH转换效率.
结论:
- CuS作为有效的HTL,改善BiVO4光电极中的载体分离和运输.
- CuS的协同光热效应显著提高了PEC的水分裂性能.
- 使用CuS的接口工程为开发高效的光电解极用于水分裂提供了一个有希望的策略.
更多相关视频
09:09A Facile Synthetic Method to Obtain Bismuth Oxyiodide Microspheres Highly Functional for the Photocatalytic Processes of Water Depuration
Published on: March 29, 2019
7.7K
10:21Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions
Published on: October 5, 2019
8.3K
相关概念视频
Photoelectric Effect
When light of a particular wavelength strikes a metal surface, electrons are emitted. This is called the photoelectric effect. The minimum frequency of light that can cause such emission of electrons is called the threshold frequency, which is specific to the metal. Light with a frequency lower than the threshold frequency, even if it is of high intensity, cannot initiate the emission of electrons. However, when the frequency is higher than the threshold value, the number of electrons ejected...
Thermal and Photochemical Electrocyclic Reactions: Overview
Electrocyclic reactions are reversible reactions. They involve an intramolecular cyclization or ring-opening of a conjugated polyene. Shown below are two examples of electrocyclic reactions. In the first reaction, the formation of the cyclic product is favored. In contrast, in the second reaction, ring-opening is favored due to the high ring strain associated with cyclobutene formation.
