High efficiency UOR electrocatalyst based on crossed nanosheet structured FeCo-LDH for hydrogen production

被引：34

作者：

Gong, Yanmei ^{[1
,4
]}

Zhao, Hongbin ^{[1
,4
]}

Ye, Daixin ^{[1
,2
,4
]}

Duan, Hongyan ^{[1
,4
]}

Tang, Ya ^{[1
,4
]}

He, Ting ^{[1
,4
]}

Shah, Luqman Ali ^{[3
]}

Zhang, Jiujun ^{[1
,4
]}

机构：

[1] Shanghai Univ, Coll Sci, Dept Phys, Shanghai 200444, Peoples R China

[2] Key Lab Fuel Cell Technol Guangdong, Guangzhou 523146, Peoples R China

[3] Univ Peshawar, Natl Ctr Excellence Phys Chem, Polymer Lab, Peshawar 25120, Pakistan

[4] Shanghai Univ, Inst Sustainable Energy, Shanghai 200444, Peoples R China

来源：

APPLIED CATALYSIS A-GENERAL | 2022年 / 643卷

基金：

中国国家自然科学基金;

关键词：

FeCo-LDH; Oxygen evolution reaction; Urea oxidation reaction; Water splitting; NICO2O4; NANOSTRUCTURES; NANOWIRE ARRAYS; NICKEL FOAM; UREA; WATER; ELECTROOXIDATION; IRON;

D O I：

10.1016/j.apcata.2022.118745

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

To improve efficiency of hydrogen production, other anodic reactions with lower theoretical potential like urea oxidation reaction (UOR) to replace OER were explored. Herein, we synthesized FeCo layered double hydroxide (FeCo-LDH) in situ on nickel foam (NF) that had excellent OER and UOR catalytic ability and durability. The good catalytic performance can be attributed to the special crossed nanosheet structured FeCo-LDH with large specific surface area, rapid electron transfer. At the current density of 50 mA cm-2, the overpotential is 228 mV during OER, and the voltage value is 1.353 V vs. RHE during UOR. When FeCo-LDH was used as electrocatalyst, the voltages required for water and urea electrolysis to reach the current density of 10 mA cm-2 are 1.523 V and 1.409 V, respectively. The strategy of constructing FeCo-LDH on NF plays an important role in high efficiency hydrogen production, and has great application prospects in sustainable energy efficient conversion.

引用

页数：9

共 47 条

[41] Iron-Incorporated α-Ni(OH)2 Hierarchical Nanosheet Arrays for Electrocatalytic Urea Oxidation [J].