In Situ Growth of Amorphous Fe(OH)3 on Nickel Nitrate Hydroxide Nanoarrays for Enhanced Electrocatalytic Oxygen Evolution

被引：60

作者：

Ma, Yan ^{[1
]}

Lu, ZiAng ^{[1
]}

Li, Siwei ^{[1
]}

Wu, Jie ^{[1
]}

Wang, Jing ^{[1
]}

Du, Yunchen ^{[1
]}

Sun, Jianmin ^{[1
]}

Xu, Ping ^{[1
]}

机构：

[1] Harbin Inst Technol, Sch Chem & Chem Engn, MIIT Key Lab Crit Mat Technol New Energy Convers, Harbin 150001, Peoples R China

来源：

ACS APPLIED MATERIALS & INTERFACES | 2020年 / 12卷 / 11期

基金：

中国国家自然科学基金;

关键词：

nickel nitrate hydroxide; core-shell structure; oxygen evolution reaction; electrocatalysis; interfacial hydrolysis; CARBONATE-HYDROXIDE; WATER OXIDATION; EFFICIENT ELECTROCATALYST; HIGHLY EFFICIENT; COPPER FOAM; NI FOAM; PERFORMANCE; ARRAYS; NI-3(NO3)(2)(OH)(4); ELECTRODE;

D O I：

10.1021/acsami.9b19437

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Development of highly efficient electrocatalyst for the oxygen evolution reaction (OER) is urgently demanded by the clean hydrogen energy. Herein, in order to further boost the OER activity of metal nitrate hydroxide materials, amorphous Fe(OH)(3) layer is in situ grown on nickel nitrate hydroxide (NiNH) nanoarrays supported on nickel foam (NF) through an interfacial hydrolysis approach, where the loading amount of the Fe(OH)(3) can be simply manipulated by the hydrolysis time. Taking advantage of the synergy of Fe(OH)(3) and NiNH, the optimized Fe(OH)(3)@NiNH/NF sample shows a very promising electrocatalytic OER activity in 1 M KOH solution, requiring a very low overpotential of 212 mV vs. reversible hydrogen electrode (RHE) to deliver a geometrical catalytic current density of 100 mA cm(-2) and a low Tafel slope of 49 mV dec(-1). This work provides a new strategy for boosting the electrocatalytic activity of metal hydroxide nitrates through the interface engineering.

引用

页码：12668 / 12676

页数：9

共 59 条

[1] Temperature dependent substrate-free facile synthesis for hierarchical sunflower-like nickel-copper carbonate hydroxide with superior electrochemical performance for solid state asymmetric supercapacitor [J].