A Versatile Iron-Tannin-Framework Ink Coating Strategy to Fabricate Biomass-Derived Iron Carbide/Fe-N-Carbon Catalysts for Efficient Oxygen Reduction
A Versatile Iron-Tannin-Framework Ink Coating Strategy to Fabricate Biomass-Derived Iron Carbide/Fe-N-Carbon Catalysts for Efficient Oxygen Reduction
复制标题
DOI：
10.1002/anie.201509024
复制
发表时间：
2016-01-22
影响因子：
16.6
通讯作者：
Wang, Huanting
中科院分区：
文献类型：
--
作者：
Wei, Jing;Liang, Yan;Wang, Huanting
将生物质转化为有价值的碳复合材料作为有效的非贵金属氧还原电催化剂对于商业上可行的聚合物电解质膜燃料电池技术的发展是有吸引力的。本文中，开发了一种通用的铁-单宁-骨架油墨涂布策略以使用商业滤纸、薄纸或棉花作为碳源，铁-单宁骨架作为铁源，以及双氰胺作为氮源来制造纤维素衍生的Fe 3C/Fe-NC催化剂。在碱性条件下，Fe_3C/Fe-N-C催化剂的氧还原性能表现出较高的起始电位（0.98V）和较大的动力学电流密度（6.4mAcm（-2）和32 mAmg（-1））。该方法甚至可以用于使用废碳源（例如用过的聚氨酯泡沫）来制备有效的催化剂。
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-NC 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. 0.98V vs the reversible hydrogen electrode (RHE)), and large kinetic current density normalized to both geometric electrode area and mass of catalysts (6.4 mAcm(-2) and 32 mAmg(-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.