文献类型：期刊文献

英文题名：Activated nitrogen-doped carbon nanofibers with hierarchical pore as efficient oxygen reduction reaction catalyst for microbial fuel cells

作者：Yang, Xiaoling[1];Zou, Wenjian[1];Su, Yunhe[1];Zhu, Yihua[1];Jiang, Hongliang[1];Shen, Jianhua[1];Li, Chunzhong[1]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Ultrafine Mat, Shanghai 200237, Peoples R China

年份：2014

卷号：266

起止页码：36

外文期刊名：JOURNAL OF POWER SOURCES

收录：;EI(收录号：20142217777547);WOS:【SCI-EXPANDED(收录号:WOS:000338806300005)】；

基金：This work was supported by the National Natural Science Foundation of China (21236003, 21206042, 20925621, and 21176083), the Basic Research Program of Shanghai (13NM1 400700, 13NM1400701), and the Fundamental Research Funds for the Central Universities (WD1013015, WD1114005 and WD1313002).

语种：英文

外文关键词：Nitrogen-doped carbon nanofibers; Hierarchically porous; Chemical activation; Oxygen reduction reaction; Microbial fuel cells

摘要：Oxygen reduction reaction (ORR) in microbial fuel cell (MFC) was evaluated by using chemical activated nitrogen-doped carbon nanofibers (ANCNFs) as cathode catalyst. ANCNFs are synthesized through modified oxidative template assembly route and then activated by KOH reagent. The as-prepared ANCNFs formed three-dimensional carbonfiber framework with large specific surface area and hierarchical tetramodal pore size distribution spanning the micro-, meso- and macro pore range, centered at 0.48, 4.0, 18 and 70 nm. Compared with unactivated nitrogen-doped carbon nanofibers (NCNFs), ANCNFs exhibited a more positive onset potential, higher current density as well as higher electron transfer number in neutral environment, highlighting the importance of chemical activation process for improving the ORR performance. MFCs equipped with ANCNFs catalyst exhibited a high power output of 1377 +/- 46 mW m(-2), which is about 1.5 times the output of NCNFs cathode (921 +/- 29 mW m(-2)), and as high as nearly 4 times of plain cathode (341 +/- 9 mW m(-2)). (C) 2014 Elsevier B.V. All rights reserved.