Atomically dispersed Ni electrocatalyst for superior urea-assisted water splitting

被引：0

作者：

Fang Luo ^{[1
]}

Shuyuan Pan ^{[2
]}

Yuhua Xie ^{[2
]}

Chen Li ^{[1
]}

Yingjie Yu ^{[1
]}

Zehui Yang ^{[2
]}

机构：

[1] College of Materials Science and Engineering, State Key Laboratory of New Textile Materials & Advanced Processing Technology, Wuhan Textile University

[2] Hubei Hydrogen Energy Technology Innovation Center, Faculty of Materials Science and Chemistry, China University of Geosciences

来源：

Journal of Energy Chemistry | 2024年 / 90卷 / 03期

关键词：

D O I：

暂无

中图分类号：

TQ426 [催化剂（触媒）]; TQ116.2 [氢气];

学科分类号：

080502 ; 081705 ; 0817 ;

摘要：

Urea oxidation reaction(UOR) has been selected as substitution for oxygen evolution reaction ascribing to its low thermodynamic voltage as well as utilization of nickel as electrocatalyst.Herein,we report the formation of nickel single atoms(Ni-SAs) as exceptional bifunctional electrocatalyst toward UOR and hydrogen evolution reaction(HER) in urea-assisted water splitting.In UOR catalysis,Ni-SAs perform a superior catalytic performance than Ni-NP/NC and Pt/C ascribing to the formation of HOO-Ni-N4 structure evidenced by in-situ Raman spectroscopy,corresponding to a boosted mass activity by 175-fold at 1.4 V vs.RHE than Ni-NP/NC.Furthermore,Ni-SAs requires only 450 mV overpotential to obtain HER current density of 500 mA cm-2.136 mA cm-2 is achieved in urea-assisted water splitting at1.7 V for Ni-SAs,boosted by 5.7 times than Pt/C-IrO2 driven water splitting.

引用

页码：1 / 6

页数：6