Engineering the electronic and strained interface for high activity of PdMcore@Ptmonolayer electrocatalysts for oxygen reduction reaction

被引：84

作者：

Nan, Haoxiong ^{[1
]}

Su, Ya-Qiong ^{[2
]}

Tang, Cheng ^{[3
]}

Cao, Rui ^{[4
]}

Li, Dong ^{[1
]}

Yu, Jia ^{[5
]}

Liu, Quanbing ^{[1
,6
]}

Deng, Yijie ^{[7
]}

Tian, Xinlong ^{[8
]}

机构：

[1] Guangdong Univ Technol, Sch Chem Engn & Light Ind, Guangzhou 510006, Peoples R China

[2] Eindhoven Univ Technol, Schuit Inst Catalysis, Lab Inorgan Mat & Catalysis, NL-5600 MB Eindhoven, Netherlands

[3] Univ Adelaide, Sch Chem Engn, Adelaide, SA 5005, Australia

[4] SLAC Natl Accelerator Lab, Stanford Synchrotron Radiat Lightsource, Menlo Pk, CA 94025 USA

[5] Tsinghua Univ, Dept Chem Engn, Beijing Key Lab Green Chem React Engn & Technol, Beijing 100084, Peoples R China

[6] South China Univ Technol, Sch Chem & Chem Engn, Key Lab Fuel Cell Technol Guangdong Prov, Guangzhou 510641, Guangdong, Peoples R China

[7] Dongguan Univ Technol, Guangdong Engn & Technol Res Ctr Adv Nanomat, Sch Environm & Civil Engn, Dongguan 523808, Peoples R China

[8] Hainan Univ, Sch Chem Engn & Technol, State Key Lab Marine Resource Utilizat South Chin, Haikou 570228, Hainan, Peoples R China

来源：

SCIENCE BULLETIN | 2020年 / 65卷 / 16期

基金：

中国国家自然科学基金;

关键词：

Oxygen reduction reaction; Fuel cells; Diverse interfaces; Pt monolayer; Interface engineering; ENHANCED ACTIVITY; NANOCRYSTALS; CATALYSTS; NANOPARTICLES; TRANSITION; PLATINUM; NANOCAGES; LAYER;

D O I：

10.1016/j.scib.2020.04.015

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：

Alloyed nanoparticles with core-shell structures provide a favorable model to modulate interfacial interaction and surface structures at the atomic level, which is important for designing electrocatalysts with high activity and durability. Herein, core-shell structured Pd3M@Pt/C nanoparticles with binary PdM alloy cores (M = Fe, Ni, and Co) and a monolayer Pt shell were successfully synthesized with diverse interfaces. Among these, Pd3Fe@Pt/C exhibited the best oxygen reduction reaction catalytic performance, roughly 5.4 times more than that of the commercial Pt/C catalyst used as reference. The significantly enhanced activity is attributed to the combined effects of strain engineering, interfacial electron transfer, and improved Pt utilization. Density functional theory simulations and extended X-ray absorption fine structure analysis revealed that engineering the alloy core with moderate lattice mismatch and alloy composition (Pd3Fe) optimizes the surface oxygen adsorption energy, thereby rendering excellent electrocatalytic activity. Future researches may use this study as a guide on the construction of highly effective core-shell electrocatalysts for various energy conversions and other applications. (C) 2020 Science China Press. Published by Elsevier B.V. and Science China Press. All rights reserved.

引用

页码：1396 / 1404

页数：9

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