期刊
JOURNAL OF POWER SOURCES
卷 266, 期 -, 页码 36-42出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2014.04.126
关键词
Nitrogen-doped carbon nanofibers; Hierarchically porous; Chemical activation; Oxygen reduction reaction; Microbial fuel cells
资金
- National Natural Science Foundation of China [21236003, 21206042, 20925621, 21176083]
- Basic Research Program of Shanghai [13NM1 400700, 13NM1400701]
- Fundamental Research Funds for the Central Universities [WD1013015, WD1114005, WD1313002]
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.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据