Accessible triple-phase boundary length: A performance metric to account for transport pathways in heterogeneous electrochemical materials
Journal of Power Sources(2016)
摘要
The performance of materials for electrochemical energy conversion and storage depends upon the number of electrocatalytic sites available for reaction and their accessibility by the transport of reactants and products. For solid oxide fuel/electrolysis cell materials, standard 3-D measurements such as connected triple-phase boundary (TPB) length and effective transport properties partially inform on how local geometry and network topology causes variability in TPB accessibility. A new measurement, the accessible TPB, is proposed to quantify these effects in detail and characterize material performance.
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关键词
Triple phase boundary,Property,Electrochemistry,Transport,Performance
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