Perspective—Mesoscale Physics in the Catalyst Layer of Proton Exchange Membrane Fuel Cells
Perspective—Mesoscale Physics in the Catalyst Layer of Proton Exchange Membrane Fuel Cells
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DOI：
10.1149/2.0111907jes
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发表时间：
2019-03
影响因子：
3.9
通讯作者：
J. Grunewald;A. Mistry;A. Verma;Navneet Goswami;P. Mukherjee;T. Fuller
中科院分区：
文献类型：
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作者：
J. Grunewald;A. Mistry;A. Verma;Navneet Goswami;P. Mukherjee;T. Fuller
质子交换膜燃料电池（PEMFC）的电化学性能的见解是基于对阴极催化剂层（CCL）中物质传输的详细理解。传统上，CCL微观结构的考虑是通过近似与未解决的孔隙尺度的功能。这种简化导致通过较低Pt负载或非贵金属催化剂提高经济可行性的可预测性的损失。随着可视化技术的进步，微观结构分辨的中尺度模式成为可能。一个明智的晶格玻尔兹曼（LBM）和有限体积（FVM）的组合是一个适当的策略，直接数值模拟（DNS）的物理化学领域，由于时空的限制仍然没有解决。
Proton-exchange membranes fuel-cells (PEMFC) electrochemical performance insights are predicated on a detailed understanding of species transport in the cathode catalyst layer (CCL). Traditionally, CCL microstructure considerations were approached through approximations with unresolved pore-scale features. Such simplifications cause the loss of predictability for improving the economic feasibility via lower Pt-loading or non-noble metal catalysts. With advances in visualization, microstructure resolved mesoscale models become possible. A judicious combination of lattice Boltzmann (LBM) and finite volume (FVM) is an appropriate strategy for direct numerical simulation (DNS) of the physicochemical fields that remain unresolved due to spatiotemporal limitations.