摘要
微生物燃料电池(MFCs)是一种在处理废水的同时产生电能的新型装置,阳极作为产电微生物富集、电子产生和传递的区域对提高MFCs的性能具有至关重要的作用。以碳布负载的四氧化三钴多孔纳米片阵列(Co_(3)O_(4)/CC)作为阳极,探究了可调控的纳米片孔缺陷对MFCs产电性能的影响。结果表明:Co_(3)O_(4)/CC阳极的产电性能显著优于碳布,且正比于Co_(3)O_(4)纳米片的孔隙率;液固界面处的电荷传递电阻(R_(ct))由729.20Ω降至43.48Ω,所获得的最大功率密度由1275 mW·m^(-2)增加至1547 mW·m^(-2)。本研究开发了一种孔结构可控的金属氧化物负载碳布策略,所制备的高性能阳极材料可为MFCs的性能提升提供参考。
Microbial Fuel cells(MFCs)are new devices that can generate electric energy while treating wastewater.The anode is the area where microbial enrichment,electron generation and transmission happen,which plays a crucial role in improving the performance of MFCs.In this paper,the effects of controllable pore defects on the electrical performance of MFCs were investigated by using carbon cloth loaded porous cobalt tetroxide nanosheet array(Co_(3)O_(4)/CC)as the anode.The results showed that the electrical performance of Co_(3)O_(4)/CC anode was significantly better than that of carbon cloth,and it was proportional to the porosity of Co_(3)O_(4)nanosheets.The charge transfer resistance(R_(ct))at the liquid-solid interface decreased from 729.20Ωto 43.48Ω,and the maximum power density obtained increased from 1275 mW·m^(-2)to 1547 mW·m^(-2).In this work,a strategy of metal oxide loaded carbon cloth with controllable pore structure was developed,and the prepared high performance anode material provided a new idea for the development of MFCs.
作者
远艳杰
李嘉欣
张志昊
宋波
刘峰
张静
YUAN Yanjie;LI Jiaxin;ZHANG Zhihao;SONG Bo;LIU Feng;ZHANG Jing(Department of Life Science and Medicine,School of Life Sciences,University of Science and Technology of China,Hefei 230026,China;Key Laboratory of Environmental Nanotechnology and Health Effects,Research Center for Eco-Environment,Chinese Academy of Sciences,Beijing 100085,China;University of Chinese Academy of Sciences,Zhong Dan Institute,Beijing 100049,China;University of Chinese Academy of Sciences,National Engineering Laboratory for VOCs pollution Control Materials and Technology,Beijing 101408,China)
出处
《环境工程学报》
CAS
CSCD
北大核心
2022年第7期2447-2456,共10页
Chinese Journal of Environmental Engineering
基金
国家重点研发计划项目(2017YFA0207204,2016YFA0203101)
国家自然科学基金资助项目(21876190,21836002)
中央高校基本科研业务费专项(2020001840)
宁夏重点研发计划项目(2017BY064)。
关键词
微生物燃料电池
四氧化三钴
纳米片阵列
三维多孔结构
产电性能
microbial fuel cell
cobalt tetroxide
nanoscale array
three-dimensional porous structure
production performance
