Pt nanoparticles embedded metal-organic framework nanosheets: A synergistic strategy towards bifunctional oxygen electrocatalysis

被引：69

作者：

Xia, Zhangxun ^{[1
]}

Fang, Jian ^{[2
,3
]}

Zhang, Xiaoming ^{[1
]}

Fan, Linpeng ^{[3
]}

Barlow, Anders J. ^{[4
,5
]}

Lin, Tong ^{[3
]}

Wang, Suli ^{[1
]}

Wallace, Gordon G. ^{[2
,6
]}

Sun, Gongquan ^{[1
]}

Wang, Xungai ^{[2
,3
]}

机构：

[1] Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Div Fuel Cell & Battery, Dalian 116023, Peoples R China

[2] ARC Ctr Excellence Electromat Sci ACES, North Wollongong, NSW, Australia

[3] Deakin Univ, Inst Frontier Mat, Geelong, Vic 3216, Australia

[4] La Trobe Univ, Ctr Mat & Surface Sci, Melbourne, Vic 3086, Australia

[5] La Trobe Univ, Dept Chem & Phys, Melbourne, Vic 3086, Australia

[6] Univ Wollongong, Intelligent Polymer Res Inst, Northfields Ave, Wollongong, NSW 2522, Australia

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2019年 / 245卷 / 389-398期

基金：

澳大利亚研究理事会;

关键词：

Bi-functional catalyst; Metal-organic frameworks; Oxygen electrocatalysis; Rechargeable Zn-air battery; 2-D nanosheets; REDUCTION; CARBON; CATALYST;

D O I：

10.1016/j.apcatb.2018.12.073

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 meet the increasing demands for highly active electrocatalysts towards oxygen reduction reaction (ORR) and oxygen evolution reaction (OER), here in this work, a new strategy of synergistic nano-architecture design based on Platinum nanoparticles (Pt NPs) and ultrathin two-dimensional (2D) metal-organic frameworks (MOFs) is developed for bifunctional electrochemical catalysts. Compared with commercial PVC and Ru02 catalysts, remarkable enhancements in activity and durability of both oxygen reduction and oxygen evolution reactions are achieved on our PtNPs@MOFs composite materials, with one of the lowest over-potential gaps (Eg p) of 665 mV that has ever been reported. The tests on the assembled Zn-air batteries have revealed promising electrocatalytic performance and practical advantage of our new materials as air cathode catalyst. Both experimental results and theoretical study have confirmed the synergistic effect between Pt NPs and MOF nanosheets through a "win-win" electron structural modification, demonstrating the effectiveness of our strategy in developing effective bifunctional oxygen electrocatalysts for various types of electrochemical devices.

引用

页码：389 / 398

页数：10

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