Effect of the structure of Ni nanoparticles on the electrocatalytic activity of Ni@Pd/C for formic acid oxidation

被引：25

作者：

Wang, Rongfang ^{[1
]}

Wang, Hui ^{[1
]}

Wang, Xingli ^{[1
]}

Liao, Shijun ^{[2
]}

Linkov, Vladimir ^{[3
]}

Ji, Shan ^{[3
]}

机构：

[1] Northwest Normal Univ, Coll Chem & Chem Engn, Minist Educ China, Key Lab Ecoenvironm Related Polymer Mat, Lanzhou 730070, Peoples R China

[2] S China Univ Technol, Key Lab Fuel Cell Technol Guangdong Prov, Guangzhou 510640, Guangdong, Peoples R China

[3] Univ Western Cape, South African Inst Adv Mat Chem, ZA-7535 Cape Town, South Africa

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2013年 / 38卷 / 29期

基金：

中国国家自然科学基金; 美国国家科学基金会;

关键词：

Amorphous; Electrocatalysts; Fuel cells; Formic acid oxidation; Core-shell structure; CORE-SHELL NANOPARTICLES; FUEL-CELLS; METHANOL OXIDATION; CATALYSTS; ELECTROOXIDATION; CRYSTALLINITY; PLATINUM; ALLOYS; RU;

D O I：

10.1016/j.ijhydene.2013.01.104

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：

Ni@Pd/C catalysts were synthesized, using Ni/C with different crystalline structures prepared with various ligands. A series of characterizations were performed by transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy. The results indicated the electrocatalysts with amorphous/crystalline (denoted as Ni-a and Ni-c) Ni structures decorated with Pd. The formic acid electrocatalytic oxidation results showed that the peak current of Ni-a@Pd/C was about 1.2 times higher than that of Ni-c@Pd/C. The good electrochemical performance and stability of Pd-modified amorphous Ni substrate reveals that the core structure plays an important role in the electrocatalytic activity and the change of the structure can improve the activity and stability of electrocatalysts. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：13125 / 13131

页数：7

共 33 条

[11] Electrooxidation of small organic molecules on mesoporous on precious metal catalysts I:CO and methanol on platinum [J].