کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6470015 1424106 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Simulated impedance of diffusion in porous media
ترجمه فارسی عنوان
امپدانس شبیه سازی انتشار در رسانه متخلخل
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی

This paper describes the use of a frequency domain, finite-difference scheme to simulate the impedance spectra of diffusion in porous microstructures. Both open and closed systems are investigated for a range of ideal geometries, as well as some randomly generated synthetic volumes and tomographically derived microstructural data. In many cases, the spectra deviate significantly from the conventional Warburg-type elements typically used to represent diffusion in equivalent circuit analysis. A key finding is that certain microstructures show multiple peaks in the complex plane, which may be misinterpreted as separate electrochemical processes in real impedance data. This is relevant to battery electrode design as the techniques for nano-scale fabrication become more widespread. This simulation tool is provided as an open-source MatLab application and is freely available online as part of the TauFactor platform.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 251, 10 October 2017, Pages 681-689
نویسندگان
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