Pt4PdCu0.4 alloy nanoframes as highly efficient and robust bifunctional electrocatalysts for oxygen reduction reaction and formic acid oxidation

被引：90

作者：

Ye, Wei ^{[1
,2
]}

Chen, Shuangming ^{[1
,2
]}

Ye, Mengshan ^{[1
,2
]}

Ren, Chenhao ^{[1
,2
]}

Ma, Jun ^{[1
,2
]}

Long, Ran ^{[1
,2
]}

Wang, Chengming ^{[1
,2
]}

Yang, Jian ^{[3
,4
]}

Song, Li ^{[1
,2
]}

Xiong, Yujie ^{[1
,2
]}

机构：

[1] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, IChEM Collaborat Innovat Ctr Chem Energy Mat, Sch Chem & Mat Sci, Hefei 230026, Anhui, Peoples R China

[2] Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230026, Anhui, Peoples R China

[3] Shandong Univ, Key Lab Colloid & Interface Chem, Minist Educ, Jinan 250100, Shandong, Peoples R China

[4] Shandong Univ, Sch Chem & Chem Engn, Jinan 250100, Shandong, Peoples R China

来源：

NANO ENERGY | 2017年 / 39卷

关键词：

Oxygen reduction reaction; Formic acid oxidation; Bifunctional electrocatalyst; Alloy; Nanoframe; Electronic effect; HIGH-INDEX FACETS; ENHANCED ACTIVITY; PLATINUM; ELECTROOXIDATION; NANOPARTICLES; NANOWIRES; SHAPE; CATALYSTS; NANOCAGES; KINETICS;

D O I：

10.1016/j.nanoen.2017.07.025

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：

The development of bifunctional electrocatalysts for direct formic acid fuel cells requires low Pt usage, high activities in both oxygen reduction reaction (ORR) and formic acid oxidation (FAO), low CO production, and high resistance to CO. It remains a grand challenge to achieve all in a single material. Here we report a copperassisted selective deposition-etching approach to Pt4PdCu0.4 nanoframes that meet all the requirements, offered by structure and electronic structure effects. Impressively, the specific activities of Pt4PdCu0.4 nanoframes in ORR and FAO are 9.2 times and 10.2 times higher than commercial Pt/C, respectively, with excellent durability. This work provides insights into the catalyst design that one single material synthesis sets up a platform for simultaneously tuning surface and electronic structures.

引用

页码：532 / 538

页数：7

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