Cellulose-acetate coating of carbon cloth diffusion layer for liquid-fed fuel cell applications.
Cellulose-acetate coating of carbon cloth diffusion layer for liquid-fed fuel cell applications.
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DOI：
10.1016/j.jpowsour.2022.231739
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发表时间：
2022-06
影响因子：
9.2
通讯作者：
Jared Beshai;Thomas DiSorbo;Jacob Hutfles;Jacob L. Segil;Richard F. ff Weir;J. Pellegrino
中科院分区：
文献类型：
--
作者：
Jared Beshai;Thomas DiSorbo;Jacob Hutfles;Jacob L. Segil;Richard F. ff Weir;J. Pellegrino
直接葡萄糖燃料电池（DGFC）和直接甲醇燃料电池（DMFC）通常以液体（aq.）form.在这项工作中，我们提出了实施醋酸纤维素（CA）涂层，随后可以对纤维素脱乙酰化，碳布用作燃料扩散层在水性燃料电池的关键特性。具体来说，我们说明了非生物葡萄糖燃料电池的功能。具有和不具有CA涂层的碳布（具有不同的脱乙酰化）的特征在于液体渗透速率、电子传导性和滚降角润湿特性。此外，通过生成极化曲线数据，在各种燃料浓度和碱性下测量燃料电池的功率产生。这些涂层促进了水溶液渗透和粘附性能的显著增加，以及在碱性DGFC中提供最大发电量的高达两倍的增加，尽管经历了碳布扩散层的一些降低的导电性。
Direct glucose fuel cells (DGFCs) and direct methanol fuel cells (DMFCs) commonly supply the reducing agent in liquid (aq.) form. In this work, we present key characteristics of implementing cellulose acetate (CA) coatings, which can subsequently be deacetylated toward cellulose, on carbon cloth used as a fuel diffusion layer in aqueous fuel-fed cells. Specifically, we illustrate functionality with an abiotic glucose fuel cell. Carbon cloth with and without a CA coating (with varying deacetylation) was characterized in terms of liquid permeation rate, electronic conductivity, and roll-off angle wetting characteristics. Additionally, fuel cell power production was measured over a variety of fuel concentrations and alkalinities by generating polarization curve data. These coatings facilitated a significant increase in aqueous solution permeation and adhesion properties, as well as providing up to two-fold increases in maximum power generation in an alkaline DGFC, despite experiencing some decreased conductivity of the carbon cloth diffusion layer.