Synthesis of Sub-2nm Iron-Doped NiSe2 Nanowires and Their Surface-Confined Oxidation for Oxygen Evolution Catalysis

被引：142

作者：

Gu, Chao ^{[1
]}

Hu, Shaojin ^{[2
,3
]}

Zheng, Xusheng ^{[2
,3
,4
]}

Gao, Min-Rui ^{[1
]}

Zheng, Ya-Rong ^{[1
]}

Shi, Lei ^{[1
]}

Gao, Qiang ^{[1
]}

Zheng, Xiao

Chu, Wangsheng ^{[4
]}

Yao, Hong-Bin ^{[1
]}

Zhu, Junfa ^{[4
]}

Yu, Shu-Hong ^{[1
]}

机构：

[1] Univ Sci & Technol China, Div Nanomat & Chem, Hefei Natl Res Ctr Phys Sci Microscale,Dept Chem, CAS Ctr Excellence Nanosci,Collaborat Innovat Ctr, Hefei 230026, Anhui, Peoples R China

[2] Univ Sci & Technol China, Div Theoret & Computat Sci, Hefei Natl Res Ctr Phys Sci Microscale, CAS Ctr Excellence, Hefei 230026, Anhui, Peoples R China

[3] Univ Sci & Technol China, Synerget Innovat Ctr Quantum Informat & Quantum P, Hefei 230026, Anhui, Peoples R China

[4] Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230029, Anhui, Peoples R China

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2018年 / 57卷 / 15期

基金：

中国国家自然科学基金;

关键词：

colloidal synthesis; doping; oxygen evolution; soft template; ultrathin nanowires; METAL CHALCOGENIDES; 1; NM; ULTRATHIN; EFFICIENT; SIZE; ELECTROCATALYST; NANOSTRUCTURES; NANOSHEETS; REDUCTION; COBALT;

D O I：

10.1002/anie.201800883

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Ultrathin nanostructures are attractive for diverse applications owing to their unique properties compared to their bulk materials. Transition-metal chalcogenides are promising electrocatalysts, yet it remains difficult to make ultrathin structures (sub-2nm), and the realization of their chemical doping is even more challenging. Herein we describe a soft-template mediated colloidal synthesis of Fe-doped NiSe2 ultrathin nanowires (UNWs) with diameter down to 1.7nm. The synergistic interplay between oleylamine and 1-dodecanethiol is crucial to yield these UNWs. The insitu formed amorphous hydroxide layers that is confined to the surface of the ultrathin scaffolds enable efficient oxygen evolution electrocatalysis. The UNWs exhibit a very low overpotential of 268mV at 10mAcm(-2) in 0.1m KOH, as well as remarkable long-term stability, representing one of the most efficient noble-metal-free catalysts.

引用

页码：4020 / 4024

页数：5

共 52 条

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