Mathematical Modeling of Lithium(Alloy), Iron Sulfide Cells. The Electrochemical Precipitation of Nickel Hydroxide

摘要

Part A. Computer programs simulating the behavior of LiAl/FeS and Li(Si)/FeS sub 2 high temperature molten salt cells have been developed. The models predict the cell voltage, temperature, and heat-generation rate during cell operation. Position-dependent behavior such as reaction-rates and concentrations within the cell are also calculated. The cell discharge behavior is compared with available experimental data. Part B. Precipitation of nickel hydroxide from acidic nickel nitrate solutions occurs in the fabrication of nickel battery electrodes. A mathematical model that simulates the formation and growth of a nickel hydroxide film on a rotating disk electrode has been developed and used to study the system. Experimental investigations of the system are also conducted with a rotating disk electrode apparatus. A mechanism for the nitrate-reduction reaction has been proposed. Experimental studies are conducted, along with theoretical efforts, in order to verify the proposed reaction sequence. (ERA citation 11:022696)