首页> 美国卫生研究院文献>Membranes >MEA Preparation for Direct Formate/Formic Acid Fuel Cell—Comparison of Palladium Black and Palladium Supported on Activated Carbon Performance on Power Generation in Passive Fuel Cell
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MEA Preparation for Direct Formate/Formic Acid Fuel Cell—Comparison of Palladium Black and Palladium Supported on Activated Carbon Performance on Power Generation in Passive Fuel Cell

机译:用于直接甲酸/甲酸燃料电池的MEA制剂 - 钯黑与钯的比较支持在无源燃料电池中发电的活性炭性能

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摘要

Membrane electrode assemblies (MEAs) with palladium catalysts were successfully prepared by using a home-made manual pressing system with Nafion glue application that contributed to a decrease of additional energy consumption. The catalyst coated membranes were prepared with supported palladium on activated carbon (PdC) and unsupported palladium black (PdB) for comparison. The performance of passive, air breathing, functioning under ambient conditions and with low concentration (1 M) formate/formic acid fuel cell was evaluated. Based on polarization curves, the best result was obtained with carbon supported catalyst and HCOOK fuel, achieving 21.01 mW/mgPd. Still, constant current discharge with PdC showed an energy generation efficiency of 14% with HCOOH over 3% with HCOOK caused by lower potassium ion conductivity and its permeability through the proton exchange membrane. The faradic efficiency of conversion in the cell is equal to the overall energy efficiency and makes the cell self-sufficient.
机译:通过使用具有Nafion胶水应用的自制手动压制系统成功制备膜电极组件(MEAS),其中具有含有Nafion胶水应用的自制手动压制系统,这有助于降低额外的能量消耗。催化剂涂覆的膜用负载钯对活性炭(PDC)和不支持的钯黑(PDB)制备,以进行比较。评价无源,空气呼吸,在环境条件下和低浓度(1M)甲酸盐/甲酸燃料电池的性能。基于偏振曲线,用碳负载型催化剂和HCOOK燃料获得最佳结果,实现21.01mW / mgpd。仍然,具有PDC的恒定电流放电显示,通过较低钾离子电导率和通过质子交换膜引起的HCOOK,HCOOK的能量产生效率为14%。电池中转换的法拉米奇效率等于整体能效,使细胞自给自足。

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