Publication detail

Novel highly active and selective Co-N-S-C efficient ORR catalyst derived from in-situ egg gel pyrolysis

Cao, Y. Sun, Y. Han, N. Li, X. Wang, Q. Sun, K. Si, W. Wang, F. Zhao, X. Bokhari, A. Mubashir, M. Chuah, L.F. Show, P.L.

English title

Novel highly active and selective Co-N-S-C efficient ORR catalyst derived from in-situ egg gel pyrolysis

Type

journal article in Web of Science

Language

en

Original abstract

Exploring the influence of various heteroatoms on M[sbnd]Nx[sbnd]C and developing novel synthetic M[sbnd]N[sbnd]C of strategies are great significance to improve the efficiency of continuable energy transformation and storage technologies. In this work, an economic and environmental in-situ doping synthesis scheme for extensible synthesis Co, N and S doped multiple porous-structure carbon (Co-NSEC) using egg gel as carbon precursor was reported. The Co-NSEC were certified to possess multiple porous structure, large surface area and uniform Co distribution. Moreover, systematic characterization results and electrochemical study revealed that thiophene sulfur could enhance Co-Nx oxygen reduction reaction (ORR) catalytic ability. The Co-NSEC catalysts exhibit excellent ORR performance akin to Pt/C (onset potential 0.947 V vs RHE, half-wave potential 0.842 V vs RHE, limiting current density 5.70 mA cm−2) and better alcohol resistance and durability in alkaline solutions. The Co-NSEC electrocatalysts are promising as Pt replacement and are desired to be applied in the aspect of fuel cells.

English abstract

Exploring the influence of various heteroatoms on M[sbnd]Nx[sbnd]C and developing novel synthetic M[sbnd]N[sbnd]C of strategies are great significance to improve the efficiency of continuable energy transformation and storage technologies. In this work, an economic and environmental in-situ doping synthesis scheme for extensible synthesis Co, N and S doped multiple porous-structure carbon (Co-NSEC) using egg gel as carbon precursor was reported. The Co-NSEC were certified to possess multiple porous structure, large surface area and uniform Co distribution. Moreover, systematic characterization results and electrochemical study revealed that thiophene sulfur could enhance Co-Nx oxygen reduction reaction (ORR) catalytic ability. The Co-NSEC catalysts exhibit excellent ORR performance akin to Pt/C (onset potential 0.947 V vs RHE, half-wave potential 0.842 V vs RHE, limiting current density 5.70 mA cm−2) and better alcohol resistance and durability in alkaline solutions. The Co-NSEC electrocatalysts are promising as Pt replacement and are desired to be applied in the aspect of fuel cells.

Keywords in English

Biomass; Carbon; Fuel cell; ORR; Oxygen reduction

Released

01.02.2023

Publisher

Elsevier Ltd

ISSN

0016-2361

Number

333

Pages count

9

BIBTEX


@article{BUT180390,
  author="Syed Awais Ali Shah {Bokhari},
  title="Novel highly active and selective Co-N-S-C efficient ORR catalyst derived from in-situ egg gel pyrolysis",
  year="2023",
  number="333",
  month="February",
  publisher="Elsevier Ltd",
  issn="0016-2361"
}