본문 바로가기
  • Home

Inorganic nanocrystal-carbon composite derived from cross-linked gallic acid derivative of polyphosphazenes for the efficient oxygen evolution reaction

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2023, 33(3), pp.737-749
  • DOI : 10.1007/s42823-022-00455-2
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : September 4, 2022
  • Accepted : December 21, 2022
  • Published : May 1, 2023

Ali Zahid 1 Mushtaq M. Asim 2 Abbas Yasir 1 Liu Wei 1 Wu Zhanpeng 1

1State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology
2State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology

Accredited

ABSTRACT

The development of heteroatoms doped inorganic nanocrystal-carbon composites (INCCs) has attained a great focus for energy applications (energy production and energy storage). A precise approach to fabricate the INCCs with homogenous distribution of the heteroatoms with an appropriate distribution of metal atoms remains a challenge for material scientists. Herein, we proposed a facile two-step route to synthesize INCC with doping of metal (α-Fe2O3) and non-metals (N, P, O) using hydrogel formed by treating hexachlorocyclotriphosphazene (HCCP) and 3, 4, 5-trihydroxy benzoic acid (Gallic acid). Metal oxide was doped using an extrinsic doping approach by varying its content and non-metallic doping by an intrinsic doping approach. We have fabricated four different samples (INCC-0.5%, INCC-1.0%, INCC-1.5%, and INCC-2.0%), which exhibit the uniform distribution of the N, P, O, and α-Fe2O3 in the carbon architecture. These composite materials were applied as anode material in water oxidation catalysis (WOC); INCC-1.5% electro-catalyst confirmed by cyclic voltammetry (CV) with a noticeable catholic peak 0.85 V vs RHE and maximal current density 1.5 mA.cm−2. It also delivers better methanol tolerance and elongated stability than RuO2; this superior performance was attributed due to the homogenous distribution of the α-Fe2O3 causing in promotion of adsorption of O2 initially and a greater surface area of 1352.8 m2/g with hierarchical pore size distribution resulting higher rate of ion transportation and mass-flux.

Citation status

* References for papers published after 2022 are currently being built.