%0 Journal Article
%A Zhang, Shidong
%A Yu, Shangzhe
%A Peters, Roland
%A Beale, Steven B.
%A Marschall, Holger
%A Kunz, Felix
%A Eichel, Rüdiger-A.
%T A new procedure for rapid convergence in numerical performance calculations of electrochemical cells
%J Electrochimica acta
%V 472
%@ 0013-4686
%C New York, NY [u.a.]
%I Elsevier
%M FZJ-2023-04272
%P 143275 -
%D 2023
%X This paper introduces a novel coupled region-to-region numerical procedure for electric field potential calculations. A conventional segregated scheme is also introduced to illustrate the coupling issues that exist in performance calculations in electrochemical devices. Numerical simulations are conducted for a solid oxide cell operating in both fuel cell and electrolysis modes. The cell performance is predicted with both segregated and coupled methods. A comparison between the coupled and segregated schemes shows that the former greatly outperforms the latter, reducing convergence times (from 5000 to 300 iterations) and improving stability. A smaller coupling coefficient contributes to the convergence as well, however, less markedly. The coupled region-to-region approach may readily be applied to numerous other scenarios, e.g., heat transfer problems between multiple phases and regions.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:001105536100001
%R 10.1016/j.electacta.2023.143275
%U https://juser.fz-juelich.de/record/1017656