PVDF黏结剂对微生物燃料电池阴极性能的影响
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摘要
以聚偏二氟乙烯(PVDF)代替传统PTFE作为微生物燃料电池阴极黏结剂,研究PVDF黏结阴极时对微生物燃料电池阴极性能的影响,以求开发更适用于工程上大面积使用的微生物燃料电池阴极黏结剂。主要采用SEM、电位监测、极化测试对制备的微生物燃料电池阴极性能进行了表征。结果表明,当PVDF黏结剂质量浓度为100 g/L时,微生物燃料电池的最大功率密度达到1 586 mW/m~2,库伦效率最高可达到74%。PVDF可以作为微生物燃料电池空气阴极的黏结剂,不会对微生物燃料电池阴极性能产生负面影响。
Polyvinylidene fluoride(PVDF) was used as cathode binder instead of traditional PTFE for microbial fuel cells(MFCs). The effect of PVDF on cathod performance of MFCs was studied to develop cathode binder more suitable for large-scale use in engineering. The cathod performance of MFCs was characterized by SEM, potential analysis and polarization curves. The results showed that the maximum power density and coulomb efficiency of MFCs with 100 g/L PVDF could reach to 1 586 mW/m~2 and 74%, respectively. PVDF can be used as a binder for the air cathode of MFCs, and it has no negative impact on the performance of MFCs' cathod.
Polyvinylidene fluoride(PVDF) was used as cathode binder instead of traditional PTFE for microbial fuel cells(MFCs). The effect of PVDF on cathod performance of MFCs was studied to develop cathode binder more suitable for large-scale use in engineering. The cathod performance of MFCs was characterized by SEM, potential analysis and polarization curves. The results showed that the maximum power density and coulomb efficiency of MFCs with 100 g/L PVDF could reach to 1 586 mW/m~2 and 74%, respectively. PVDF can be used as a binder for the air cathode of MFCs, and it has no negative impact on the performance of MFCs' cathod.
引文
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[19] QIU Z Z,SU M,WEI L L,et al.Improvement of microbial fuel cell cathodes using cost-effective polyvinylidene fluoride[J].Journal of Power Sources,2015,273:566-573.
[2] LOGAN B E,REGAN J M.Microbial challenges and applications[J].Environmental Science and Technology,2006,40(17):5172-5180.
[3] LOVLEY D R.The microbe electric:conversion of organic matter to electricity[J].Current Opinion in Biotechnology,2008,19(6):564-571.
[4] ZHANG X Y,CHENG S A,LIANG P,et al.Scalable air cathode microbial fuel cells using glass fiber separators,plastic mesh supporters,and graphite fiber brush anodes[J].Bioresource Technology,2011,102(1):372-375.
[5] YANG W L,HE W H,ZHANG F et al.Single-step fabrication using a phase inversion method of poly (vinylidene fluoride) (PVDF) activated carbon air cathodes for microbial fuel cells[J].Environmental Science and Technology,2014,1(10):416-420.
[6] CHENG S A,LOGAN B E.Increasing power generation for scaling up single-chamber air cathode microbial fuel cells[J].Bioresource Technology,2011,102(6):4468-4473.
[7] LIU H,CHENG S A,HUANG L P,et al.Scale-up of membrane-free single-chamber microbial fuel cells[J].Journal of Power Sources,2008,179(1):274-279.
[8] ZUO Y,LOGAN B E.Power generation in MFCs with architectures based on tubular cathodes or fully tubular reactors[J].Water Science and Technology,2011,64(11):2253-2255.
[9] 董恒.基于活性炭的低成本、高性能微生物燃料电池空气阴极研究[D].天津:南开大学,2013.
[10] LIU H,LOGAN B E.Electricity generation using an air-cathode single chamber microbial fuel cell in the presence and absence of a proton exchange membrane[J].Environmental Science and Technology,2004,38(14):4040-4042..
[11] LOVLEY D R,PHILLIPS E J P.Novel mode of microbial energy metabolism:organic carbon oxidation coupled to dissimilatory reduction of iron or manganese[J].Applied and Environmental Microbiology,1988,54(6):1472-1473.
[12] WANG L,LIANG P,ZHANG J,et al.Activity and stability of pyrolyzed iron ethylenediaminetetraacetic acid as cathode catalyst in microbial fuel cells[J].Bioresource Technology,2011,102(8):5093-5097.
[13] 郭英.快速消解分光光度法测定化学需氧量[J].环境科学导刊,2011,30(2):94-96.
[14] CHENG S A,LOGAN B E.Ammonia treatment of carbon cloth anodes to enhance power generation of microbial fuel cells[J].Electrochemistry Communications,2007,9(3):492-496.
[15] KUMAR G S,RAJA M,PARTHASARATHY S.High performance electrodes with very low platinum loading for polymer electrolyte fuel cells[J].Electrochimica Acta,1995,40(3):285-290.
[16] SCHRODER U,NIESSEN J,SCHOLZ F.A generation of microbial fuel cells with current outputs boosted by more than one order of magnitude[J].Angewandte Chemie,2003,42(25):2880-2884.
[17] CHENG S A,LIU H,LOGAN B E.Increased performance of single-chamber microbial fuel cells using an improved cathode structure[J].Electrochemistry Communications,2006,8(3):489-494.
[18] 王新征,李梦青,居荫轩,等.制备方法对活性炭孔结构的影响[J].炭素技术,2002(6):25-30.
[19] QIU Z Z,SU M,WEI L L,et al.Improvement of microbial fuel cell cathodes using cost-effective polyvinylidene fluoride[J].Journal of Power Sources,2015,273:566-573.