基于木薯秸秆制备三维多孔碳及其在微生物燃料电池中的应用

doi:10.16085/j.issn.1000-6613.2017-0151

化工进展 ›› 2017, Vol. 36 ›› Issue (10): 3815-3819.DOI: 10.16085/j.issn.1000-6613.2017-0151

基于木薯秸秆制备三维多孔碳及其在微生物燃料电池中的应用

林家瑾^1,2, 姚燕彤^1,2, 陈嘉缘^1,2, 张志明^1,2, 陈妹琼^1,3, 张敏¹, 程发良¹

1. 东莞理工学院, 广东省新型纳米材料工程技术研究中心, 广东东莞 523808;
2. 东莞理工学院生态环境与建筑工程学院, 广东东莞 523808;
3. 东莞理工学院城市学院, 东莞市绿色能源重点实验室, 广东东莞 523419

收稿日期:2017-01-11 修回日期:2017-05-10 出版日期:2017-10-05 发布日期:2017-10-05
通讯作者: 程发良,博士,教授.
作者简介:林家瑾(1996-),女,本科生.
基金资助:
广东大学生科技创新培育专项资金项目（pdjh2016b0488），国家自然科学基金项目（21375016），广东省科技应用研发专项（2015B090927007）及广东省创新强校项目（2014KZDXM073，2014KTSCX181，2015KCXTD029）。

Fabrication of three-dimensional porous carbon from cassava straw and application for MFCs

LIN Jiajin^1,2, YAO Yantong^1,2, CHEN Jiayuan^1,2, ZHANG Zhiming^1,2, CHEN Meiqiong^1,3, ZHANG Min¹, CHENG Faliang¹

1. Guangdong Engineering and Technology Research Center for Advanced Nanomaterials, Dongguan University of Technology, Dongguan 523808, Guangdong, China;
2. School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan 523808, Guangdong, China;
3. Dongguan Key Laboratory of Green Energy, City College of Dongguan University of Technology, Dongguan 523419, Guangdong, China

Received:2017-01-11 Revised:2017-05-10 Online:2017-10-05 Published:2017-10-05

摘要/Abstract

摘要： 微生物燃料电池是一种可以从污水中直接回收能量的新型装置。然而，相对低的输出功率密度严重限制了它的应用。阳极材料对于提高其功率密度和能量转换效率至关重要。本文利用一步碳化法基于农业废弃物木薯秸秆制备了先进的三维多孔碳阳极，用扫描电子显微镜观察了所制备的材料的形貌，发现其内部呈现天然筛管式大孔结构，可有利于增大阳极生物负载量和优化传质作用。利用交流阻抗谱、循环伏安技术以及双室微生物燃料电池结构研究了材料的电化学性能，结果发现，800℃下碳化得到的三维多孔碳具有最优的电化学活性和最佳功率输出，其最大功率密度高达73.0W/m³，是商业碳纸的3.7倍。此研究为构筑高效生物化学体系电极材料提供了新思路和新方法。

关键词: 三维, 多孔, 碳材料, 阳极, 微生物燃料电池

Abstract: Microbial fuel cells(MFCs)are emerging as an energy conversion device to directly harvest electricity energy from wastewater,of which the power density is relative low,which limited its applications to a great degree. The anode material is crucial for the improvement of power density and the energy conversion efficiency of MFCs. In this study,an advanced three-dimensional(3D)carbon anode with macropore structure was obtained by the one-step carbonization of cassava straws which are agricultural solid residues. The morphology of the 3D porous carbon(3DPC)was observed using scanning electron microscope(SEM). The results showed that the 3DPC consists of sieve-like tube structure with macropore,which is beneficial for biomass loading and mass transfer. The electrochemical performance of the 3DPC was measured by electrochemical impedance spectroscopy (EIS),cyclic voltammetry(CV) as well as dual-chamber microbial fuel cells (MFCs) device. It was found that the 3DPC obtained at 800℃ had the best electrochemical activity,and the highest power density was as high as 73.0W/m³,which was 3.7-fold higher than that of commercial carbon paper. This study provided new ideas and methods for the construction of highly efficient biochemical system electrode materials.

Key words: three-dimensional, porous, carbon material, anode, microbial fuel cells

中图分类号:

O646

林家瑾, 姚燕彤, 陈嘉缘, 张志明, 陈妹琼, 张敏, 程发良. 基于木薯秸秆制备三维多孔碳及其在微生物燃料电池中的应用[J]. 化工进展, 2017, 36(10): 3815-3819.

LIN Jiajin, YAO Yantong, CHEN Jiayuan, ZHANG Zhiming, CHEN Meiqiong, ZHANG Min, CHENG Faliang. Fabrication of three-dimensional porous carbon from cassava straw and application for MFCs[J]. Chemical Industry and Engineering Progress, 2017, 36(10): 3815-3819.

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基于木薯秸秆制备三维多孔碳及其在微生物燃料电池中的应用

Fabrication of three-dimensional porous carbon from cassava straw and application for MFCs

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