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引用本文:   黄燕平, 苑红艳, 张健, 杨亚辉, 刘洪涛. 银耳状Fe-N-C复合催化剂的制备及催化氧还原性能研究. 分析化学, 2017, 45(9): 1297-1302. doi:  10.11895/j.issn.0253-3820.170279 [复制]

Citation:   HUANG Yan-Ping, YUAN Hong-Yan, ZHANG Jian, YANG Ya-Hui, LIU Hong-Tao. Preparation and Properties of Tremella-like Fe-N-C Composite Catalyst for Oxygen Reduction Reaction. Chinese Journal of Analytical Chemistry, 2017, 45(9): 1297-1302. doi: 10.11895/j.issn.0253-3820.170279 [复制]

银耳状Fe-N-C复合催化剂的制备及催化氧还原性能研究

通讯作者:  杨亚辉, yangyahui2002@sina.com; 刘洪涛, liuht@csu.edu.cn

收稿日期: 2017-05-04

接受日期: 2017-06-23

出版日期: 2017-09-20

基金项目: 本文系国家自然科学基金项目(No.21071153)、湖南省科技计划项目(Nos.2016TP1007,2014FJ2007)和中南大学贵重仪器设备开放共享基金项目(No.CSUZC201726)资助

Preparation and Properties of Tremella-like Fe-N-C Composite Catalyst for Oxygen Reduction Reaction

Corresponding author:  YANG Ya-Hui, yangyahui2002@sina.com; LIU Hong-Tao, liuht@csu.edu.cn

Received Date:  2017-05-04

Accepted Date:  2017-06-23

Published Date:  2017-09-20

Fund Project:  This work was supported by the National Natural Science Foundation of China (No. 21071153), the Hunan Provincial Science and Technology Plan of China (Nos. 2016TP1007, 2014FJ2007), and the Open-End Fund for the Valuable and Precision Instruments of Central South University (No. CSUZC201726)

以无机铁盐和邻苯二胺为基础原料,经铁(Ⅲ)基螯合前驱体热解反应,制备出Fe-N-C复合催化剂。经扫描电镜观察,带有折褶的碳微纳米片相互交迭,形成银耳状的三维自支撑结构。氮气吸脱附测试表明此结构富含微孔和介孔,比表面积可达290 m2/g。通过X射线衍射(XRD)确证石墨化C和多晶Fe3C作为催化剂主相存在,X射线光电子能谱(XPS)进一步揭示N原子主要以石墨N和吡啶N形式掺杂到C骨架中。电化学测试表明银耳状Fe-N-C复合催化剂在碱性条件下催化氧还原反应为四电子过程,其催化活性可媲美商业Pt/C催化剂。经过2000次氧还原测试后,催化极限电流衰减小于5%,并且半波电势仅负移5 mV(商业Pt/C催化剂负移35 mV),表现出优异的氧还原催化稳定性。

关键词:   氧还原反应, Fe-N-C复合催化剂, 多孔结构, 催化活性, 催化稳定性
Key words:   Oxygen reduction reaction, Fe-N-C composite catalyst, Porous structure, Catalytic activity, Catalytic stability
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银耳状Fe-N-C复合催化剂的制备及催化氧还原性能研究

黄燕平, 苑红艳, 张健, 杨亚辉, 刘洪涛

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