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Heterogeneous electrocatalysis in porous cathodes of solid oxide fuel cells
Y. Fu, S. Poizeau, A. Bertei +4
A general physics-based model is developed for heterogeneous electrocatalysis in porous electrodes and used to predict and interpret the impedance of solid oxide fuel cells. This m…
Multicomponent Gas Diffusion in Porous Electrodes
Yeqing Fu, Yi Jiang, Abhijit Dutta +3
Multicomponent gas transport is investigated with unprecedented precision by AC impedance analysis of porous YSZ anode-supported solid oxide fuel cells. A fuel gas mixture of H2-H2…
Over-limiting Current and Control of Dendritic Growth by Surface Conduction in Nanopores
Ji-Hyung Han, Edwin Khoo, Peng Bai +1
Understanding over-limiting current (faster than diffusion) is a long-standing challenge in electrochemistry with applications in desalination and energy storage. Known mechanisms…
Simple Formula for Marcus-Hush-Chidsey Kinetics
Yi Zeng, Raymond Smith, Peng Bai +1
The Marcus-Hush-Chidsey (MHC) model is well known in electro-analytical chemistry as a successful microscopic theory of outer-sphere electron transfer at metal electrodes, but it i…
Membrane-less hydrogen bromine flow battery
W. A. Braff, M. Z. Bazant, C. R. Buie
In order for the widely discussed benefits of flow batteries for electrochemical energy storage to be applied at large scale, the cost of the electrochemical stack must come down s…
Phase Transformation Dynamics in Porous Battery Electrodes
Todd R. Ferguson, Martin Z. Bazant
Porous electrodes composed of multiphase active materials are widely used in Li-ion batteries, but their dynamics are poorly understood. Two-phase models are largely empirical, and…