Microwave-hydrothermal synthesis of boron/nitrogen co-doped graphene as an efficient metal-free electrocatalyst for oxygen reduction reaction

Il To Kim, Myeong Jun Song, Young Bok Kim, Moo Whan Shin

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

In this study, a facile microwave-hydrothermal method was successfully applied to synthesize boron and nitrogen co-doped graphene (BNG) electrocatalyst for the oxygen reduction reaction (ORR). It consists of an efficient two-step process involving simultaneous doping with different heteroatoms (B and N) and reduction of doped graphene oxide. It was found that the B and N contents of highly reduced BN co-doped graphene (HRBNG) are 3.55 and 4.43 at%, respectively. The HRBNG exhibited clearly enhanced electrocatalytic activity towards the ORR in alkaline electrolytes. The electron transfer number (n) was obtained 3.53 ∼ 3.84 in potential range of 0.465 V–0.225 V, indicating that the HRBNG favors the four-electron pathway for the reduction of oxygen. These results demonstrate that the synthesized HRBNG has potential to replace expensive precious metal catalysts and also provide a new strategy to synthesize heteroatom-doped graphene-based catalyst.

Original languageEnglish
Pages (from-to)22026-22033
Number of pages8
JournalInternational Journal of Hydrogen Energy
Volume41
Issue number47
DOIs
Publication statusPublished - 2016 Dec 21

Fingerprint

electrocatalysts
Electrocatalysts
Hydrothermal synthesis
Graphene
Boron
graphene
boron
Microwaves
Nitrogen
microwaves
nitrogen
Oxygen
oxygen
synthesis
Metals
metals
catalysts
Catalysts
Electrons
Precious metals

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

Cite this

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abstract = "In this study, a facile microwave-hydrothermal method was successfully applied to synthesize boron and nitrogen co-doped graphene (BNG) electrocatalyst for the oxygen reduction reaction (ORR). It consists of an efficient two-step process involving simultaneous doping with different heteroatoms (B and N) and reduction of doped graphene oxide. It was found that the B and N contents of highly reduced BN co-doped graphene (HRBNG) are 3.55 and 4.43 at{\%}, respectively. The HRBNG exhibited clearly enhanced electrocatalytic activity towards the ORR in alkaline electrolytes. The electron transfer number (n) was obtained 3.53 ∼ 3.84 in potential range of 0.465 V–0.225 V, indicating that the HRBNG favors the four-electron pathway for the reduction of oxygen. These results demonstrate that the synthesized HRBNG has potential to replace expensive precious metal catalysts and also provide a new strategy to synthesize heteroatom-doped graphene-based catalyst.",
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Microwave-hydrothermal synthesis of boron/nitrogen co-doped graphene as an efficient metal-free electrocatalyst for oxygen reduction reaction. / Kim, Il To; Song, Myeong Jun; Kim, Young Bok; Shin, Moo Whan.

In: International Journal of Hydrogen Energy, Vol. 41, No. 47, 21.12.2016, p. 22026-22033.

Research output: Contribution to journalArticle

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AU - Shin, Moo Whan

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