Enhanced activity and stability of binuclear iron (III) phthalocyanine on graphene nanosheets for electrocatalytic oxygen reduction in acid
Li, TF; Peng, YX; Li, K; Zhang, R; Zheng, LR; Xia, DG; Zuo, X; Zheng LR(郑黎荣)
刊名JOURNAL OF POWER SOURCES
2015
卷号293页码:511-518
关键词Binuclear iron (III) phthalocyanine Graphene nanosheets Oxygen reduction reaction High stability
学科分类Electrochemistry; Energy & Fuels
DOI10.1016/j.jpowsour.2015.05.099
文章类型Article
英文摘要Binuclear iron (III) phthalocyanine (bi-FePc) and iron (III) phthalocyanine (FePc) are synthesized in situ on graphene nanosheets (GNS) by a microwave-assisted method. TEM, ultraviolet visible spectroscopy and Raman spectroscopy confirm that bi-FePc is supported on GNS through pi-pi interactions. The catalytic activity of the bi-FePc/GNS and FePc/GNS composites in the oxygen reduction reaction (ORR) is investigated by CV and RDE measurements. The bi-FePc/GNS composite shows a more positive onset potential (0.12 V vs. Hg/Hg2SO4) for the ORR than FePc/GNS (-0.02 V vs. Hg/Hg2SO4), and a four-electron mechanism similar to commercial Pt/C (0.22 V vs. Hg/Hg2SO4). Moreover, bi-FePc/GNS exhibits good stability with 100% retention after 36,000 s, while Pt/C has a retention of only 50% after the same period. Additionally, bi-FePc/GNS shows higher tolerance toward methanol than the Pt/C catalyst. XPS and X-ray absorption fine structure spectroscopy demonstrate that compared with FePc/GNS, bi-FePc/GNS possesses a higher concentration of Fe3+ and smaller skeleton radius of the phthalocyanine ring, which has a square-planar structure that evidently favors the ORR. Thus, bi-FePc/GNS is a promising candidate as a cathode catalyst in direct methanol fuel cells. (C) 2015 Elsevier B.V. All rights reserved.
类目[WOS]Electrochemistry ; Energy & Fuels
收录类别SCI ; EI
WOS记录号WOS:000358809700060
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被引频次:16[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/228676
专题中国科学院高能物理研究所_多学科研究中心_期刊论文
中国科学院高能物理研究所_多学科研究中心
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Li, TF,Peng, YX,Li, K,et al. Enhanced activity and stability of binuclear iron (III) phthalocyanine on graphene nanosheets for electrocatalytic oxygen reduction in acid[J]. JOURNAL OF POWER SOURCES,2015,293:511-518.
APA Li, TF.,Peng, YX.,Li, K.,Zhang, R.,Zheng, LR.,...&郑黎荣.(2015).Enhanced activity and stability of binuclear iron (III) phthalocyanine on graphene nanosheets for electrocatalytic oxygen reduction in acid.JOURNAL OF POWER SOURCES,293,511-518.
MLA Li, TF,et al."Enhanced activity and stability of binuclear iron (III) phthalocyanine on graphene nanosheets for electrocatalytic oxygen reduction in acid".JOURNAL OF POWER SOURCES 293(2015):511-518.
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