期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 41, 期 22, 页码 9303-9311出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2016.04.093
关键词
Pt catalysts; Graphene; Direct methanol fuel cells; Electrocatalysis
资金
- Zhejiang Provincial Public Welfare Project [2016C33011]
- National Natural Foundation of China [21275130]
A one-pot thermos-reduction strategy is developed to prepare ultrafine PtNi alloy nano particles (NPs), which are uniformly deposited onto reduced graphene oxides (RGOs) in the presence of polyvinylpyrrolidone (PVP). The size of PtNi NPs on RGOs can be tuned from 2.5 to 5.4 nm, after Ni was alloyed with Pt by Pt/Ni atomic ratio increased from 2:1 to 5:1. The electrochemical investigation demonstrates that Ni modification can promote the electrocatalytic activity of Pt catalysts on oxidation of methanol with a mass current density up to 1065 mA mg(-1), which is 2.65 times that of Pt catalysts without Ni modification, and comparable to and even better than those of the Pt-based catalysts reported recently. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据