A Versatile Iron–Tannin‐Framework Ink Coating Strategy to Fabricate Biomass‐Derived Iron Carbide/Fe‐N‐Carbon Catalysts for Efficient Oxygen Reduction. Issue 4 (11th December 2015)

• Record Type: Journal Article
• Authors: Wei, Jing; Liang, Yan; Hu, Yaoxin; Kong, Biao; Simon, George P.; Zhang, Jin; Jiang, San Ping; Wang, Huanting
• Is Part Of: Angewandte Chemie international edition. Volume 55:Issue 4(2016)
• Page Start: 1355
• Page End: 1359
• Publication Date: 2015-12-11
• Subjects: biomass -- carbon -- metal–tannin framework -- non-precious metal catalysts -- oxygen reduction reaction; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201509024
• Languages: English
• ISSNs: 1433-7851

Abstract

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 Fe3 C/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. Abstract : Ink for a minute : A versatile iron–tannin(TA)‐framework "ink" coating strategy is demonstrated for the fabrication of high‐performance Fe3 C/Fe‐N‐C catalysts for the oxygen‐reduction reaction (ORR) by using low‐cost, widely available, cellulose fiber‐based materials (filter paper, tissue paper, and cotton), and even polyurethane‐foam waste as the carbon source.