The effects of additives on nickel electrode discharge kinetics
Abstract
The effects of Ba, Cd, Co, Li, Mn, and Zn additives on the impedance of porous nickel electrodes have been measured. The resistance to proton diffusion in the charged electrode is decreased only by Li, Co, and Mn additives. The charge transfer resistance of the nickel electrode can be decreased up to two orders of magnitude by Co and Li additives. The electronic resistance of the discharged active material is reduced significantly by Mn and Co and to a lesser extent by Li. Data are presented indicating that the resistance characteristics correlate with performance during high rate cycling, and that the effects of additives on the physical structure of the active material deposit can be just as important as changes on conductivity.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- September 1985
- Bibcode:
- 1985STIN...8622853Z
- Keywords:
-
- Additives;
- Diffusion Electrodes;
- Kinetics;
- Nickel;
- Porous Materials;
- Transition Metals;
- Additives;
- Barium;
- Cycles;
- Deposits;
- Electrical Impedance;
- Electrical Resistance;
- Kinetics;
- Mechanical Properties;
- Protons;
- Rates (Per Time);
- Electronics and Electrical Engineering