Sustainable seaweed-based one-dimensional (1D) nanofibers as high-performance electrocatalysts for fuel cells

Wei Zhao, Pei Yuan, Xilin She, Yanzhi Xia, Sridhar Komarneni, Kai Xi, Yanke Che, Xiangdong Yao, Dongjiang Yang

Research output: Contribution to journalArticle

51 Citations (Scopus)

Abstract

A high-performance one-dimensional (1D) nanofibrillar N-Co-C oxygen reduction reaction (ORR) catalyst was fabricated via electrospinning using renewable natural alginate and multiwalled carbon nanotubes (MWCNTs) as precursors, where Co nanoparticles (NPs) are encapsulated by nitrogen (N)-doped amorphous carbon and assembled on MWCNTs. The 1D morphology not only prevents the aggregation of the Co NPs, but also provides a typical multimodal mesoporous structure which is beneficial for the O2 diffusion and the migration of adsorbed superoxide. In combination with the high conductivity of CNTs, the N-doped amorphous carbon shell can exert electron release on the encapsulated Co NPs, and thus enhance the ORR activity. It is also a protective layer that stabilizes the Co NPs, which ensures a high ORR activity of the catalysts in both alkaline and acid media and long-term durability. So compared with a commercial Pt/C catalyst, as expected, the N-Co-C nanofiber reported herein exhibited a comparable current density and onset potential (-0.06 V), with better durability in alkaline and acid solutions and better resistance to crossover effects in the ORR.

Original languageEnglish (US)
Pages (from-to)14188-14194
Number of pages7
JournalJournal of Materials Chemistry A
Volume3
Issue number27
DOIs
StatePublished - Jul 21 2015

Fingerprint

Seaweed
Electrocatalysts
Nanofibers
Fuel cells
Oxygen
Nanoparticles
Multiwalled carbon nanotubes (MWCN)
Amorphous carbon
Catalysts
Durability
Acids
Alginate
Electrospinning
Superoxides
Current density
Nitrogen
Agglomeration
Electrons

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

Cite this

Zhao, Wei ; Yuan, Pei ; She, Xilin ; Xia, Yanzhi ; Komarneni, Sridhar ; Xi, Kai ; Che, Yanke ; Yao, Xiangdong ; Yang, Dongjiang. / Sustainable seaweed-based one-dimensional (1D) nanofibers as high-performance electrocatalysts for fuel cells. In: Journal of Materials Chemistry A. 2015 ; Vol. 3, No. 27. pp. 14188-14194.
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Sustainable seaweed-based one-dimensional (1D) nanofibers as high-performance electrocatalysts for fuel cells. / Zhao, Wei; Yuan, Pei; She, Xilin; Xia, Yanzhi; Komarneni, Sridhar; Xi, Kai; Che, Yanke; Yao, Xiangdong; Yang, Dongjiang.

In: Journal of Materials Chemistry A, Vol. 3, No. 27, 21.07.2015, p. 14188-14194.

Research output: Contribution to journalArticle

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AU - Xi, Kai

AU - Che, Yanke

AU - Yao, Xiangdong

AU - Yang, Dongjiang

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