Development of a nickel oxide/hydrogen multilayer bipolar battery for pulsed power, phase 2
Abstract
This program is concerned with the development of a nickel oxide/hydrogen battery for pulsed power applications. It is based on thin film nickel oxide cathodes and metal hydride (e.g., LaNi5) anodes. Thin film nickel oxides were prepared by reactive RF sputtering, chemical vapor deposition, anodic oxidation of nickel and by both cathodic and anodic precipitation of nickel hydroxide. Thin LaNi5 files were prepared by RF sputtering from a target of the same composition. Initial nickel oxide pulse currents were several hundred mA/sq cm. Only a fraction of the electrode capacity as accessible at short times less than 10 msec. The LaNi5 electrodes were electrochemically reversible for the H storage reaction, and pulse currents of thin film LaNirHx electrodes were of the same magnitude as the nonsputtered NiOx. Rates appear limited by surface reaction kinetics and by bulk diffusion in the anode and cathode, respectively.
- Publication:
-
Final Report
- Pub Date:
- October 1990
- Bibcode:
- 1990eici.rept.....H
- Keywords:
-
- Cathodic Coatings;
- Diffusion Electrodes;
- Metal Hydrides;
- Nickel Hydrogen Batteries;
- Nickel Oxides;
- Thin Films;
- Anodic Coatings;
- Bipolarity;
- Chemical Reactions;
- Hydroxides;
- Radio Frequencies;
- Reaction Kinetics;
- Reactivity;
- Vapor Deposition;
- Electronics and Electrical Engineering