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学科主题物理化学
Nitrogen-doped hierarchically porous carbon as efficient oxygen reduction electrocatalysts in acid electrolyte
Zhong, Hexiang1; Deng, Chengwei1,2; Qiu, Yanling1; Yao, Lan1,2; Zhang, Huamin1; Zhong HX(钟和香); Zhang HM(张华民)
刊名JOURNAL OF MATERIALS CHEMISTRY A
2014-10-28
DOI10.1039/c4ta03778b
2期:40页:17047-17057
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
研究领域[WOS]Chemistry ; Energy & Fuels ; Materials Science
关键词[WOS]PEM FUEL-CELL ; MESOPOROUS CARBONS ; ACTIVE-SITES ; CATALYSTS ; POLYANILINE ; PERFORMANCE ; GRAPHENE ; STABILITY ; NANOTUBES ; SPECTROSCOPY
英文摘要Nitrogen-doped carbon was found to exhibit excellent activity as an electrocatalyst in renewable energy devices. A controllable method to synthesize N-doped hierarchically porous carbons (PNCEs) partly with graphene-like structure using polyaniline (PANI)-polyvinylpyrrolidone (PVP) composite as a carbon source via a soft-template process was reported. The catalytic mechanism was thoroughly studied to better understand the relationship between the structure, Fe species and catalytic activity. The PNCE prepared at 1000 degrees C displays the best performance achieving a maximum power density of 456 mW cm(-2) and oxygen reduction reaction (ORR) onset potential of 0.90 V. More prominently, the catalyst presents superior stability, as well as poison tolerance including methanol and SO2 to the commercial JM-Pt/C catalyst in 0.5 M H2SO4. The PVP is proven to tailor the structure, improve the surface area, and alter the transition metal species. The PNCEs synthesized under NH3 exhibit considerably better catalytic activity toward ORR compared with the undoped carbon and PNCEs synthesized under an N-2 atmosphere. Furthermore, we find that the nitrogen bonding configurations, textural structure, Fe species and surface areas of PNCEs play key roles in the electrocatalytic activity towards the ORR. The formed FeN4 species hosted in the micropores acts as the active component for ORR activity in PNCEs, although it is not the only contributor to the high performance of PNCEs. The catalyst is expected to be a promising non-noble electrocatalyst for use in polymer electrolyte membrane fuel cells.
语种英语
WOS记录号WOS:000343072300030
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/143928
专题中国科学院大连化学物理研究所
通讯作者Zhong HX(钟和香); Zhang HM(张华民)
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy DNL, Div Energy Storage, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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GB/T 7714
Zhong, Hexiang,Deng, Chengwei,Qiu, Yanling,et al. Nitrogen-doped hierarchically porous carbon as efficient oxygen reduction electrocatalysts in acid electrolyte[J]. JOURNAL OF MATERIALS CHEMISTRY A,2014,2(40):17047-17057.
APA Zhong, Hexiang.,Deng, Chengwei.,Qiu, Yanling.,Yao, Lan.,Zhang, Huamin.,...&张华民.(2014).Nitrogen-doped hierarchically porous carbon as efficient oxygen reduction electrocatalysts in acid electrolyte.JOURNAL OF MATERIALS CHEMISTRY A,2(40),17047-17057.
MLA Zhong, Hexiang,et al."Nitrogen-doped hierarchically porous carbon as efficient oxygen reduction electrocatalysts in acid electrolyte".JOURNAL OF MATERIALS CHEMISTRY A 2.40(2014):17047-17057.
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