One-step synthesis of Fe-Ni hydroxide nanosheets derived from bimetallic foam for efficient electrocatalytic oxygen evolution and overall water splitting

被引：1

作者：

Lili Zeng ^{[1
]}

Linjing Yang ^{[1
]}

Jia Lu ^{[2
]}

Jin Jia ^{[1
]}

Jiayuan Yu ^{[1
]}

Yunqie Deng ^{[1
]}

Mingfei Shao ^{[3
]}

Weijia Zhou ^{[1
]}

机构：

[1] Guangzhou Key Laboratory for Surface Chemistry of Energy Materials,New Energy Research Institute,School of Environment and Energy,South China University of Technology,Guangzhou Higher Education Mega Center

[2] Xinhua College of Sun Yat-sen University

[3] State Key Laboratory of Chemical Resource Engineering,Beijing University of Chemical Technology

来源：

Chinese Chemical Letters | 2018年 / 29卷 / 12期

基金：

中国国家自然科学基金;

关键词：

One-step synthesis; Bimetallic foam; Water splitting; Fe-Ni hydroxide; Nanosheet array;

D O I：

暂无

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The research of superior water oxidation electrodes is essential for the green energy in the form of hydrogen by way of electrolytic water splitting, and still remains challenging. Based upon dealloying foam, Fe-Ni hydroxide nanosheets network structure is designed on the surface of Fe-Ni alloy foam. The ratio of Ni/Fe elements was adjusted to realize the optimal catalytic activities for oxygen evolution reaction（OER） and hydrogen evolution reaction（HER）. The obtained electrode of Fe-Ni hydroxide nanosheets/Fe-Ni alloy foam-60% Fe（FN LDH/FNF-60, 60 is the percentage of Fe content） possess low overpotential of 261 mV to reach 10 mA/cm;, small Tafel slope（85.5 mV/dec）, and superior long-term stability（remaining 10 mA/cm;for over 14 h without attenuation） toward OER in 1.0 mol/L KOH.Moreover, an alkaline water electrolyzer is constructed with the FN LDH/FNF-60 as anode and Ni（OH）;/Fe-Ni alloy foam-25% Fe(Ni（OH）;/FNF-25) as cathode, which displays superior electrolytic performance（affording 10 mA/cm;at 1.62 V） and lasting durability.

引用

页码：1875 / 1878

页数：4