催化作用
材料科学
电极
化学工程
辅助电极
无机化学
电化学
电催化剂
光电子学
纳米技术
吸附
作者
Danni Zhou,Zhaoming Xia,Huishan Shang,Hai Xiao,Zhuoli Jiang,Haijing Li,Lirong Zheng,Juncai Dong,Wenxing Chen
出处
期刊:Materials Chemistry Frontiers
[The Royal Society of Chemistry]
日期:2021-04-07
卷期号:5 (7): 3085-3092
被引量:2
摘要
Interface engineering has been demonstrated to have a great effect on designing high performance catalysts. In particular, the interface design at the atomic scale is always a fortress to be overcome by researchers. Herein, we in situ introduced triphenylphosphine into cobalt atom sites in a metal–organic framework via encapsulation and successfully synthesized a cobalt single-atom catalyst with a co-coordinated atomic interface structure of P and N (Co/Co1P1N3). Adopted as a counter electrode (CE) in dye-sensitized solar cells (DSSCs), Co/Co1P1N3 demonstrates a power conversion efficiency (PCE) of 8.51%, outperforming Co/Co1N4 (6.62%) counter electrode and commercial Pt (7.88%). We discover that the electron donation from the P dopant can reduce the electrostatic attraction between Co and I− ions, which favor I− desorption processes, sequentially boosting the activity of Co/Co1P1N3.
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