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首页> 外文期刊>Journal of power sources >Poly(vinylidene fluoride-co-hexafluoropropylene) phase inversion coating as a diffusion layer to enhance the cathode performance in microbial fuel cells
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Poly(vinylidene fluoride-co-hexafluoropropylene) phase inversion coating as a diffusion layer to enhance the cathode performance in microbial fuel cells

机译：聚偏二氟乙烯-共-六氟丙烯相转化膜作为扩散层，可增强微生物燃料电池的阴极性能

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摘要

A low cost poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) phase inversion coating was developed as a cathode diffusion layer to enhance the performance of microbial fuel cells (MFCs). A maximum power density of 1430 ± 90 mW m~(-2) was achieved at a PVDF-HFP loading of 4.4 mg cm~(-2) (4:1 polymer:carbon black), with activated carbon as the oxygen reduction cathode catalyst. This power density was 31% higher than that obtained with a more conventional platinum (Pt) catalyst on carbon cloth (Pt/C) cathode with a poly(tetrafluoroethylene) (PTFE) diffusion layer (1090 ± 30 mW m~(-2)). The improved performance was due in part to a larger oxygen mass transfer coefficient of 3 × 10~(-3) cm s~(-1) for the PVDF-HFP coated cathode, compared to 1.7 × 10~(-3) cm s~(-1) for the carbon cloth/PTFE-based cathode. The diffusion layer was resistant to electrolyte leakage up to water column heights of 41 ± 0.5 cm (4.4 mg cm~(-2) loading of 4:1 polymer:carbon black) to 70 ± 5 cm (8.8 mg cm~2 loading of 4:1 poly-merxarbon black). This new type of PVDF-HFP/carbon black diffusion layer could reduce the cost of manufacturing cathodes for MFCs.
机译：开发了一种低成本的聚偏二氟乙烯-共-六氟丙烯（PVDF-HFP）相转化涂层作为阴极扩散层，以增强微生物燃料电池（MFCs）的性能。在4.4 mg cm〜（-2）（4：1聚合物：炭黑）的PVDF-HFP负载下，使用活性炭作为氧还原阴极，可实现1430±90 mW m〜（-2）的最大功率密度催化剂。该功率密度比在具有聚四氟乙烯（PTFE）扩散层的碳布（Pt / C）阴极上使用更传统的铂（Pt）催化剂获得的功率密度高31％（1090±30 mW m〜（-2） ）。性能提高的部分原因是，相比于1.7×10〜（-3）cm s，PVDF-HFP涂层阴极的传氧系数更大，为3×10〜（-3）cm s〜（-1）。 〜（-1）用于碳布/ PTFE基阴极。扩散层在最高41±0.5 cm（4.4 mg cm〜（-2）的4：1聚合物：炭黑的负载量）至70±5 cm（8.8 mg cm〜2的负载量的水柱高度）耐电解液泄漏4：1聚墨镜黑）。这种新型的PVDF-HFP /炭黑扩散层可以降低制造MFC阴极的成本。

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  • 来源
    《Journal of power sources》 |2014年第10期|379-384|共6页
  • 作者

    Wulin Yang; Fang Zhang; Weihua He; Jia Liu; Michael A. Hickner; Bruce E. Logan;

  • 作者单位

    Department of Civil and Environmental Engineering, The Pennsylvania State University, University Park, PA 16802, United States;

    Department of Civil and Environmental Engineering, The Pennsylvania State University, University Park, PA 16802, United States;

    State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, No. 73 Huanghe Road, Nangang District, Harbin 150090, China;

    Department of Civil and Environmental Engineering, The Pennsylvania State University, University Park, PA 16802, United States;

    Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA 16802, United States;

    Department of Civil and Environmental Engineering, The Pennsylvania State University, University Park, PA 16802, United States;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    MFC; Cathode; Water resistant diffusion layer; PVDF-HFP phase inversion coating; Power production;

    机译：MFC;阴极;防水扩散层;PVDF-HFP相转化膜;电力生产;

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