title: A Versatile Iron-Tannin-Framework Ink Coating Strategy to Fabricate Biomass-Derived Iron Carbide/Fe-N-Carbon Catalysts for Efficient Oxygen Reduction.
abstract: The conversion of biomass into valuable carbon composites as efficient non-precious metal oxygen-reduction electrocatalysts is attractive for the development of commercially viable polymer electrolyte membrane fuel-cell technology. Herein, a versatile iron-tannin-framework ink coating strategy is developed to fabricate cellulose-derived Fe3 C/Fe-N-C catalysts using commercial filter paper, tissue, or cotton as a carbon source, an iron-tannin framework as an iron source, and dicyandiamide as a nitrogen source. The oxygen reduction performance of the resultant Fe3C/Fe-N-C catalysts shows a high onset potential (i.e. 0.98 V vs the reversible hydrogen electrode (RHE)), and large kinetic current density normalized to both geometric electrode area and mass of catalysts (6.4 mA cm(-2) and 32 mA mg(-1) at 0.80 V vs RHE) in alkaline condition. This method can even be used to prepare efficient catalysts using waste carbon sources, such as used polyurethane foam.
authors.affiliation: Department of Chemical Engineering, Monash University, Clayton, Victoria, 3800, Australia.
authors.forename: Jing
authors.initials: J
authors.lastname: Wei
authors.affiliation: Department of Chemical Engineering, Monash University, Clayton, Victoria, 3800, Australia.
authors.forename: Yan
authors.initials: Y
authors.lastname: Liang
authors.affiliation: Department of Chemical Engineering, Monash University, Clayton, Victoria, 3800, Australia.
authors.forename: Yaoxin
authors.initials: Y
authors.lastname: Hu
authors.affiliation: Department of Chemical Engineering, Monash University, Clayton, Victoria, 3800, Australia.
authors.forename: Biao
authors.initials: B
authors.lastname: Kong
authors.affiliation: Department of Materials Engineering, Monash University, Clayton, Victoria, 3800, Australia.
authors.forename: George P
authors.initials: GP
authors.lastname: Simon
authors.affiliation: Fuels and Energy Technology Institute & Department of Chemical Engineering, Curtin University, Perth, WA, 6102, Australia.
authors.forename: Jin
authors.initials: J
authors.lastname: Zhang
authors.affiliation: Fuels and Energy Technology Institute & Department of Chemical Engineering, Curtin University, Perth, WA, 6102, Australia.
authors.forename: San Ping
authors.initials: SP
authors.lastname: Jiang
authors.affiliation: Department of Chemical Engineering, Monash University, Clayton, Victoria, 3800, Australia. huanting.wang@monash.edu.
authors.forename: Huanting
authors.initials: H
authors.lastname: Wang
keywords: biomass; carbon; metal-tannin framework; non-precious metal catalysts; oxygen reduction reaction