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Constructing Supports–Network with N–TiO2 Nanofibres for Highly Efficient Hydrogen–Production of PEM Electrolyzer

Authors :
Sen Wang
Hong Lv
Yongwen Sun
Wenxuan Ji
Xiaojun Shen
Cunman Zhang
Source :
World Electric Vehicle Journal, Vol 12, Iss 3, p 124 (2021)
Publication Year :
2021
Publisher :
MDPI AG, 2021.

Abstract

Hydrogen production with a proton exchange membrane (PEM)electrolyzer utilized with renewable energy power is considered to be an efficient and clean green technique, but the poor oxygen evolution performance results in high energy consumption and low efficiency. In this work, a strategy is reported for the construction of a support network of the anodic catalyst layer to simultaneously ameliorate its sluggish reaction kinetics and mass transport in order to realize highly efficient hydrogen production of the PEM electrolyzer. After in situ synthesis of IrO2 nanoparticles on N–doped TiO2 nanofibers, the as–prepared IrO2/N–TiO2 electrode shows substantially enhanced Ir utilization and accelerated mass transport, consequently decreasing the corresponding cell potential of 107 mV relative to pure IrO2 at 2 A cm−2. The enhanced activity of IrO2/N–TiO2 could be due to the fact that the N–TiO2 nanofiber support can form a porous network, endowing IrO2/N–TiO2 with a large reactive contact interface and favorable mass transfer characters. The strategy in this work supplies a pathway to develop high–efficiency interfacial reaction materials for diverse applications.

Details

Language :
English
ISSN :
20326653
Volume :
12
Issue :
3
Database :
Directory of Open Access Journals
Journal :
World Electric Vehicle Journal
Publication Type :
Academic Journal
Accession number :
edsdoj.7803618eb2144f2aa39e4efdc056e9d3
Document Type :
article
Full Text :
https://doi.org/10.3390/wevj12030124