Anchoring Iron-EDTA Complex on Graphene toward the Synthesis of Highly Efficient Fe-N-C Oxygen Reduction Electrocatalyst for Fuel Cells
Anchoring Iron-EDTA Complex on Graphene toward the Synthesis of Highly Efficient Fe-N-C Oxygen Reduction Electrocatalyst for Fuel Cells作者机构：State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun Jilin 130022 China University of Chinese Academy of Sciences Beijing 100049 China
出 版 物：《Chinese Journal of Chemistry》 (中国化学（英文版）)
年 卷 期：2018年第36卷第4期
页 面：287-292页
核心收录：
学科分类：080705[工学-制冷及低温工程] 082304[工学-载运工具运用工程] 08[工学] 0807[工学-动力工程及工程热物理] 0823[工学-交通运输工程]
基 金：This work was financially supported by Ministry of Science and Technology of China (Nos. 2026YFB0200203 and 2017YFA0206704) National Program on Key Basic Research Project of China (No. 2014CB932300) Strategic Priority Research Program of the Chinese Academy of Sciences (No. XDA09010404) Technology and Industry for National Defense of China (No. JCKY2026130B010) and National Natural Science Foundation of China (Nos. 51771177 21422108 and 51472232)
主 题：iron-EDTA complex iron-nitrogen-doping carbon porous nanosheets oxygen reduction reaction fuel cells
摘 要：Developing nonprecious carbon electrocatalysts as alternatives to platinum for cathodic oxygen reduction reaction in fuel cells is of signifi- cance. Herein, an efficient precursor-controlled synthesis strategy based on extremely rapid nucleation and deposition process assisted by the liquid nitrogen freeze drying method is explored to anchor cheap iron-EDTA complex evenly dispersed on graphene to realize mJcrostructural homogeneity of the derived Fe-N-C oxygen reduction electrocatalyst. The prepared electrocatatyst possesses excellent performance including high activity with more positive onset and half-wave potential, a long-term stability, and anti-poisoning effect compared to commercial Pt/C. The activity correlates well with the unique sheet-shaped morphology, high surface area, hierarchical porous structure, and the introduction of Fe-Nx/C species. Especially, both the assembled practical alkaline and acid fuel cells based on the synthesized cathode catalysts reveal excellent performance with high open-circuit voltage and power density.
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