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Taurine-doped conductive hydrogen as metal-free and binder-free electrocatalysts for efficient water oxidation.

Authors :
Hu, Lin
Tan, Xiao
Chen, Jue
Xu, Lili
Luo, Rui
Wu, Xiankun
Wen, Xiaoju
Zhang, Shengli
Fei, Zhenghao
Source :
International Journal of Hydrogen Energy. Mar2024, Vol. 58, p621-626. 6p.
Publication Year :
2024

Abstract

In recent years, heteroatom-doped carbon nanomaterials without metal possess great potential in oxygen evolution reactions (OER). However, the synthesis process is complex and the energy waste is large (i.e. calcination). Molecular electrocatalysts, as a new type of electrocatalyst for oxygen evolution, have attracted a wide amount of attention. In this work, taurine (TA) was selected as an OER electrocatalyst, and the catalytic activity of TA was studied via theoretical calculations and experiment. The DFT results show that the OH in the electrolyte tends to adsorb on C or N and takes away the H atom on the amino group to form uncoordinated N atoms in TA molecules. In addition, the TA molecule is fixed in a conductive hydrogel with a hydrophilic surface, and the conductive network on the hydrogel further accelerates charge and mass transfer in the OER process. Therefore, this work opens the way for further research on molecular electrocatalysts. [Display omitted] • the TA molecules provided positively charged atoms with high activity towards the OER demonstrated by DFT calculations. • the conductive PPy networks allowed fast charge transfer during the OER. • The TA-PPy hydrogel was directly grown on the carbon cloth without the usage of binders. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
03603199
Volume :
58
Database :
Academic Search Index
Journal :
International Journal of Hydrogen Energy
Publication Type :
Academic Journal
Accession number :
175642256
Full Text :
https://doi.org/10.1016/j.ijhydene.2024.01.237