Enhanced electrocatalytic performance toward oxygen reduction in an alkaline medium by anchoring cobalt tetraferrocenylphthalocyanine onto graphene

被引:1
作者
Li, Meng [1 ]
Ma, Xiuxiu [1 ]
Wu, Yanying [1 ]
He, Xingquan [1 ]
机构
[1] Changchun Univ Sci & Technol, Dept Chem & Chem Engn, Changchun 130022, Peoples R China
关键词
Cobalt tetraferrocenylphthalocyanine; Graphene; ORR; pi-pi Assembling; NITROGEN-DOPED GRAPHENE; IRON PHTHALOCYANINE; HYDROGEN-PEROXIDE; MANGANESE OXIDES; CARBON-BLACK; CATALYST; COMPOSITE; FERROCENE; ELECTRODE; SUPPORT;
D O I
10.1007/s10800-014-0775-y
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
A novel non-noble-metal electrocatalyst, abbreviated as CoFcPc/PSS-Gr, was fabricated through a solvothermally assisted pi-pi assembling approach by anchoring cobalt tetraferrocenylphthalocyanine (CoFcPc) onto poly(sodium-p-styrenesulfonate) modified graphene (PSS-Gr). The as-prepared hybrid was characterized by scanning electron microscopy, transmission electron microscopy, UV-Vis absorption spectroscopy, and X-ray photoelectron spectroscopy. Cyclic voltammetry, rotating disk electrode, and rotating ring-disk electrode measurements were employed to investigate the kinetics and mechanism of the ORR on the CoFcPc/PSS-Gr electrode. Besides, the chronoamperometric measurements were utilized to evaluate the stability of the CoFcPc/PSS-Gr composite in an alkaline solution. The obtained results demonstrated that CoFcPc supported on PSS-Gr showed good tolerance to methanol crossover, high kinetic current density (9.51 mA cm(-2)), high stability (84.6 % after 10,000 s), and an almost four-electron transfer process in an alkaline medium.
引用
收藏
页码:21 / 31
页数:11
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