DICP OpenIR
Subject Area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)
Source PublicationJOURNAL OF MATERIALS CHEMISTRY A
2014-10-28
DOI10.1039/c4ta03778b
Volume2Issue:40Pages:17047-17057
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS Research AreaChemistry ; Energy & Fuels ; Materials Science
WOS KeywordPEM FUEL-CELL ; MESOPOROUS CARBONS ; ACTIVE-SITES ; CATALYSTS ; POLYANILINE ; PERFORMANCE ; GRAPHENE ; STABILITY ; NANOTUBES ; SPECTROSCOPY
AbstractNitrogen-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.
Language英语
WOS IDWOS:000343072300030
Citation statistics
Cited Times:42[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/143928
Collection中国科学院大连化学物理研究所
Corresponding AuthorZhong HX(钟和香); Zhang HM(张华民)
Affiliation1.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
Recommended Citation
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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