Rationally Modulating the Functions of Ni3Sn2-NiSnOx Nanocomposite Electrocatalysts towards Enhanced Hydrogen Evolution Reaction

被引：75

作者：

Wang, Xiaomei ^{[1
]}

Long, Guifa ^{[3
]}

Liu, Bo ^{[2
,4
]}

Li, Zelong ^{[1
]}

Gao, Wensheng ^{[1
]}

Zhang, Pengfei ^{[2
,4
]}

Zhang, Hong ^{[5
]}

Zhou, Xia ^{[5
]}

Duan, Ruizhi ^{[1
,2
]}

Hu, Wei ^{[1
]}

Li, Can ^{[1
,2
]}

机构：

[1] Lanzhou Univ, Coll Chem & Chem Engn, Key Lab Adv catalysis, State Key Lab Appl Organ Chem, Lanzhou 730000, Gansu, Peoples R China

[2] Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China

[3] Guangxi Minzu Univ, Sch Chem & Chem Engn, Guangxi Key Lab Chem & Engn Forest Prod, Nanning 530008, Peoples R China

[4] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[5] Lanzhou Univ, Electron Microscopy Ctr, Sch Mat & Energy, Lanzhou 730000, Peoples R China

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2023年 / 62卷 / 19期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

Alkaline Hydrogen Evolution; All Pertinent Intermediates; Multiple Functions; Mutual Coordination; Nanocomposite Electrocatalysts; EFFICIENT; MECHANISM; OXIDATION; ELECTRODE; CO;

D O I：

10.1002/anie.202301562

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Identifying electrocatalysts with functions of easy dissociation of water, rapid transformation of hydroxyl and facile hydrogen-hydrogen bond formation are indispensable while challenge for realizing efficient alkaline hydrogen evolution reaction (HER). Herein, we presented the design of Ni3Sn2-NiSnOx nanocomposites towards addressing this challenge. We showed that Ni3Sn2 possessed ideal hydrogen adsorption and low hydroxyl adsorption abilities and NiSnOx facilitated water dissociation and hydroxyl transfer process, respectively. Consequently, the fine-tuned interplay of the two functional parts realized the mutual coordination among the multiple functions and led to significantly boosted HER kinetics. Current densities of 10 and 1000 mA cm(-2) were obtained at overpotentials of 14 and 165 mV on the optimized catalyst. This work highlights the significance of considering intrinsic interactions between active sites and all pertinent intermediates on obtaining promising electrocatalysts.

引用

页数：9