中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Carbonization of self-assembled nanoporous hemin with a significantly enhanced activity for the oxygen reduction reaction

文献类型:期刊论文

作者Xie, Yan1,2; Tang, Chizhou1,2; Hao, Zhiqiang1; Lv, Yang2; Yang, Ruixia2,3; Wei, Xuming2; Deng, Weiqiao2,3; Wang, Anjie1; Yi, Baolian2; Song, Yujiang2
刊名faraday discussions
出版日期2014
卷号176页码:393-408
英文摘要the scarcity and high cost of pt-based electrocatalysts for the oxygen reduction reaction (orr) hinder the practical application of proton exchange membrane fuel cells (pemfcs). it is critical to replace platinum with non-noble metal electrocatalysts (nnmes). carbonized metalloporphyrins represent an important class of nnmes, but most metalloporphyrins are costly and the corresponding nnmes do not possess a high orr activity. herein, we report that the self-assembly of inexpensive hemin leads to porous nanomaterials in water under ambient conditions and subsequent heat-treatment of the unprecedented nanoporous hemin results in a magnetic nnme with a much enhanced orr activity compared with directly carbonized hemin without self-assembly. the improvement of the orr activity likely originates from the exposure of more orr active sites, caused by the surface area increase of the nanoporous hemin after carbonization over that of micro-scale pristine hemin crystals. moreover, the orr activity of heat-treated nanoporous hemin is actually comparable to that of commercial pt/c in alkaline solution. additionally, the carbonized nanoporous hemin is much better than commercial pt/c in terms of durability and tolerance to methanol. this study opens up a new avenue to the production of inexpensive metalloporphyrin-based nnmes with a high orr performance by using a self-assembly method in combination with traditional pyrolysis.
WOS标题词science & technology ; physical sciences
类目[WOS]chemistry, physical
研究领域[WOS]chemistry
关键词[WOS]high-performance electrocatalyst ; electrolyte fuel-cells ; mesoporous carbon ; cathode catalyst ; alkaline media ; metal catalyst ; graphene ; iron ; porphyrin ; composite
收录类别SCI
语种英语
WOS记录号WOS:000350894400026
公开日期2016-05-09
源URL[http://cas-ir.dicp.ac.cn/handle/321008/145905]  
专题大连化学物理研究所_中国科学院大连化学物理研究所
作者单位1.Dalian Univ Technol, Sch Chem Engn, Dalian 116024, Peoples R China
2.Chinese Acad Sci, DICP, Dalian 116023, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
推荐引用方式
GB/T 7714
Xie, Yan,Tang, Chizhou,Hao, Zhiqiang,et al. Carbonization of self-assembled nanoporous hemin with a significantly enhanced activity for the oxygen reduction reaction[J]. faraday discussions,2014,176:393-408.
APA Xie, Yan.,Tang, Chizhou.,Hao, Zhiqiang.,Lv, Yang.,Yang, Ruixia.,...&Song, Yujiang.(2014).Carbonization of self-assembled nanoporous hemin with a significantly enhanced activity for the oxygen reduction reaction.faraday discussions,176,393-408.
MLA Xie, Yan,et al."Carbonization of self-assembled nanoporous hemin with a significantly enhanced activity for the oxygen reduction reaction".faraday discussions 176(2014):393-408.

入库方式: OAI收割

来源:大连化学物理研究所

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