Coaly Graphite as an Eco-Friendly Material in the Microporous Layer of Proton Exchange Membrane Fuel Cells
Coaly Graphite as an Eco-Friendly Material in the Microporous Layer of Proton Exchange Membrane Fuel Cells
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DOI：
10.1021/acs.energyfuels.3c00594
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发表时间：
2023-05
期刊：
影响因子：
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通讯作者：
Dandan Hou;Ningran Wu;X. Tian;Ye Liu;Shengping Zhang;Ruizhi Yang;Yue Qi;Luda Wang
中科院分区：
文献类型：
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作者：
Dandan Hou;Ningran Wu;X. Tian;Ye Liu;Shengping Zhang;Ruizhi Yang;Yue Qi;Luda Wang
质子交换膜(PEM)燃料电池可以直接将化学能转化为电能，是一种很有前途的新一代能源获取方式。在所有组分中，微孔层(MPL)控制着气体扩散层和催化层之间的水和气体的传输，其中炭黑是传统的制备材料之一。然而，由于炭黑的制备方法耗能大、资本化成本高、水运率低等特点，炭黑的规模化实现仍面临障碍。在这里，我们展示了使用炭黑(CB)、煤质石墨(CG)和氧化石墨烯(GO)三种碳材料的组合来合成MPL，它们的协同效应确保了PEM燃料电池的高输出。CB被CG部分取代，从而在保持高功率密度的同时减少了碳和有毒气体的足迹。这项为MPL设计膜结构的工作为开发高效的PEM燃料电池提供了机会。
Proton exchange membrane (PEM) fuel cells, which can directly convert chemical energy to electricity, are promising as the next-generation energy harvesting method. Among all of the components, the microporous layer (MPL) controls the water and gas transport between the gas diffusion layer and the catalysis layer, where carbon black is one of the traditional materials for fabrication. However, owing to its energy-intensive preparation method, high capitalized cost, and low water transport rate features, the realization of carbon black on a large scale still faces obstacles. Here, we demonstrate a combination of three carbon materials for synthesizing the MPL using carbon black (CB), coaly graphite (CG), and graphene oxide (GO), whose synergistic effect ensures a high output in PEM fuel cells. CB is partially replaced by CG, which reduces the carbon and toxic gas footprint while still maintaining a high power density. This work for designing membrane structures for the MPL opens opportunities for developing highly efficient PEM fuel cells.