Polydopamine-coated graphene nanosheets as efficient electrocatalysts for oxygen reduction reaction

被引:14
|
作者
Wang, Dan-Dan [1 ]
Gao, Xiuli [2 ]
Zhao, Lianming [2 ]
Zhou, Jin [1 ]
Zhuo, Shuping [1 ]
Yan, Zifeng [2 ]
Xing, Wei [2 ]
机构
[1] Shandong Univ Technol, Sch Chem Engn, Zibo 255049, Peoples R China
[2] China Univ Petr, State Key Lab Heavy Oil Proc, Sch Sci, Qingdao 266580, Peoples R China
来源
RSC ADVANCES | 2018年 / 8卷 / 29期
基金
中国国家自然科学基金;
关键词
NITROGEN-DOPED GRAPHENE; METAL-FREE ELECTROCATALYSTS; VERSATILE PLATFORM; CARBON SPHERES; FREE CATALYSTS; FREE GROWTH; BORON; OXIDE; PERFORMANCE;
D O I
10.1039/c8ra01027g
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Polydopamine-modified graphene (G-PDA) materials were synthesized by in situ polymerization of a dopamine monomer on the surface of graphene oxide. X-ray photoelectron spectroscopy (XPS) has confirmed that new N-containing functional groups are formed during the synthesis process, which result in the excellent electrocatalytic activity of the composite towards ORR in terms of onset potential, number of electron transferred and limiting current density. The electrocatalytic activity of the optimized G-PDA sample is better than N-doped graphene and comparable to the commercial 20 wt% Pt/C catalyst. Furthermore, compared with the Pt-based catalysts, the G-PDA showed superior stability and methanol resistance, which favored its practical applications in fuel cells.
引用
收藏
页码:16044 / 16051
页数:8
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