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Title: Phosphorus modified carbon fiber cloth as a robust and efficient anode for alkaline water electrolysis
Authors: Zhao, X.
Liu, Y. H.
Cai, Weizheng
Wang, Qilun
Zeng, Zhiping
Hu, F. X.
Hu, T.
Liu, Bin
Yang, H. B.
Keywords: Engineering::Chemical engineering
Issue Date: 2021
Source: Zhao, X., Liu, Y. H., Cai, W., Wang, Q., Zeng, Z., Hu, F. X., Hu, T., Liu, B. & Yang, H. B. (2021). Phosphorus modified carbon fiber cloth as a robust and efficient anode for alkaline water electrolysis. Materials Today Energy, 20, 100683-.
Project: RG115/18
Journal: Materials Today Energy
Abstract: Developing cost-effective electrocatalysts is critical to renewable energy conversion and storage technologies. In this work, commercial carbon fiber cloth (CFC) was thermally treated with PCl3 in a sealed-tube reactor to obtain phosphorus-modified CFC (P-CFC). The P-CFC can deliver an oxygen evolution reaction (OER) current density of 10 mA cm−2 with only 310 mV overpotential for 50 h with negligible activity decay, which is superior to all other reported metal-free OER electrocatalysts. The mechanism of improved OER activity was systematically studied by electron microscopy and photoelectron spectroscopy. It was found that the p-type doping on the CFC surface by P atom could promote the electron transfer from OH− to the electrode; moreover, the formation of oxidized C–P active sites under anodic potential boosted OER activity both thermodynamically and kinetically. This work not only develops a highly active metal-free OER electrocatalyst but also introduces a promising method to enhance the durability of carbon support for oxidative electrochemical reactions.
ISSN: 2468-6069
DOI: 10.1016/j.mtener.2021.100683
Schools: School of Chemical and Biomedical Engineering 
Rights: © 2021 Elsevier Ltd. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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