Mesoporous Pt@Pt-skin Pt3Ni core-shell framework nanowire electrocatalyst for efficient oxygen reduction

被引：149

作者：

Jin, Hui ^{[1
]}

Xu, Zhewei ^{[1
]}

Hu, Zhi-Yi ^{[1
]}

Yin, Zhiwen ^{[1
]}

Wang, Zhao ^{[1
]}

Deng, Zhao ^{[1
]}

Wei, Ping ^{[1
]}

Feng, Shihao ^{[1
]}

Dong, Shunhong ^{[1
]}

Liu, Jinfeng ^{[1
]}

Luo, Sicheng ^{[1
]}

Qiu, Zhaodong ^{[1
]}

Zhou, Liang ^{[1
]}

Mai, Liqiang ^{[1
]}

Su, Bao-Lian ^{[1
,2
]}

Zhao, Dongyuan ^{[3
]}

Liu, Yong ^{[1
]}

机构：

[1] Wuhan Univ Technol, Int Sch Mat Sci & Engn ISMSE, Nanostruct Res Ctr, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China

[2] Univ Namur, Dept Chem, Lab Inorgan Mat Chem, 61 Rue Bruxelles, B-5000 Namur, Belgium

[3] Fudan Univ, Dept Chem, Lab Adv Mat, State Key Lab Mol Engn Polymers,Shanghai Key Lab M, Shanghai 200433, Peoples R China

来源：

NATURE COMMUNICATIONS | 2023年 / 14卷 / 01期

基金：

中国国家自然科学基金;

关键词：

TOTAL-ENERGY CALCULATIONS; SOLVOTHERMAL SYNTHESIS; NANOPARTICLES; NANOFRAMES; NANOCAGES;

D O I：

10.1038/s41467-023-37268-4

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The design of Pt-based nanoarchitectures with controllable compositions and morphologies is necessary to enhance their electrocatalytic activity. Herein, we report a rational design and synthesis of anisotropic mesoporous Pt@Pt-skin Pt3Ni core-shell framework nanowires for high-efficient electrocatalysis. The catalyst has a uniform core-shell structure with an ultrathin atomic-jagged Pt nanowire core and a mesoporous Pt-skin Pt3Ni framework shell, possessing high electrocatalytic activity, stability and Pt utilisation efficiency. For the oxygen reduction reaction, the anisotropic mesoporous Pt@Pt-skin Pt3Ni core-shell framework nanowires demonstrated exceptional mass and specific activities of 6.69 A/mg(pt) and 8.42 mA/cm(2) (at 0.9 V versus reversible hydrogen electrode), and the catalyst exhibited high stability with negligible activity decay after 50,000 cycles. The mesoporous Pt@Pt-skin Pt3Ni core-shell framework nanowire configuration combines the advantages of three-dimensional open mesopore molecular accessibility and compressive Pt-skin surface strains, which results in more catalytically active sites and weakened chemisorption of oxygenated species, thus boosting its catalytic activity and stability towards electrocatalysis.

引用

页数：10

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