A binary electrolyte model of a cylindrical alkaline cell

被引:7
作者
Kriegsmann, JJ [1 ]
Cheh, HY [1 ]
机构
[1] Columbia Univ, Dept Chem Engn & Appl Chem, New York, NY 10027 USA
关键词
alkaline batteries; zincate ion; zinc oxide; precipitation rate; discharge time;
D O I
10.1016/S0378-7753(99)00312-2
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
A cylindrical alkaline cell is modeled as a binary electrolyte system by assuming the direct electrochemical formation of ZnO in the anode. Justifications for replacing the dissolution-precipitation mechanism are provided. Compared to the original model, the binary electrolyte model has a more understandable model formulation, more consistent physical property data, and greater flexibility in certain instances. The binary electrolyte model predicts a longer cell life and higher operating voltage than the ternary electrolyte model for the test case discharge rate. There are no numerical difficulties associated with the zincate ion in the binary electrolyte model, because this species is not considered. The characteristics and advantages of the simplified anode behavior are discussed. An application of the binary electrolyte model is included. (C) 2000 Elsevier Science S.A. All rights reserved.
引用
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页码:190 / 202
页数:13
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