Dynamic simulation of the charge-discharge characteristics of the sodium-sulphur cell

Hiroyuki Kawamoto*

*この研究の対応する著者

研究成果: Article査読

5 被引用数 (Scopus)

抄録

A dynamic model of the porous sulphur electrode including diffusion of the reactant is developed to simulate charge-discharge characteristics of the sodium-sulphur cell and transient behaviour of the cell after termination of operation. From the results of investigations the following are clarified: (1) sodium ion concentration on the solid electrolyte side is low during charge, on the other hand, it is high during discharge; (2) an insulating film of sulphur is formed at the surface of the solid electrolyte in the deeply charged stage. This results in an increase of the cell resistance and thus restricts charge acceptance; (3) the resistance in the single phase region is larger than that in the two phase region; and (4) open circuit voltage in the single phase region, observed after termination of operation, is not equal to the equilibrium value but gradually approaches it according to the concentration relaxation. These characteristics agree well with experimental results.

本文言語English
ページ(範囲)409-414
ページ数6
ジャーナルJournal of Applied Electrochemistry
21
5
DOI
出版ステータスPublished - 1991 5月
外部発表はい

ASJC Scopus subject areas

  • 電気化学

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