A Versatile Iron–Tannin‐Framework Ink Coating Strategy to Fabricate Biomass‐Derived Iron Carbide/Fe‐N‐Carbon Catalysts for Efficient Oxygen Reduction |
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| Authors: | Dr Jing Wei Yan Liang Yaoxin Hu Biao Kong Prof George P Simon Jin Zhang Prof San Ping Jiang Prof Huanting Wang |
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| Institution: | 1. Department of Chemical Engineering, Monash University, Clayton, Victoria, Australia;2. Department of Materials Engineering, Monash University, Clayton, Victoria, Australia;3. Fuels and Energy Technology Institute & Department of Chemical Engineering, Curtin University, Perth, WA, Australia |
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| 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 Fe3C/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. |
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| Keywords: | biomass carbon metal– tannin framework non-precious metal catalysts oxygen reduction reaction |
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