TY  - JOUR
AU  - Zhang, Shidong
AU  - Yu, Shangzhe
AU  - Peters, Roland
AU  - Beale, Steven B.
AU  - Marschall, Holger
AU  - Kunz, Felix
AU  - Eichel, Rüdiger-A.
TI  - A new procedure for rapid convergence in numerical performance calculations of electrochemical cells
JO  - Electrochimica acta
VL  - 472
SN  - 0013-4686
CY  - New York, NY [u.a.]
PB  - Elsevier
M1  - FZJ-2023-04272
SP  - 143275 -
PY  - 2023
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:001105536100001
DO  - DOI:10.1016/j.electacta.2023.143275
UR  - https://juser.fz-juelich.de/record/1017656
ER  -