Development of Large Scale Advanced NI-CD Batteries Employing Roll-Bonded Electrodes
Abstract
A 12-month, Phase II development effort was undertaken by Energy Research Corporation (ERC) for an effective transition of the ERC roll-bonded battery technology to the Navy. The current contract N60921-C-89-0123 as amended and extended has enabled both fabrication and cycle testing of prototype cells containing large (12-inch x 20-inch) size electrodes as well as accelerated corrosion testing of the electrode substrate material. It was established, through the accelerated corrosion study, that the estimated life of ERC's Ni-Cd cells exceeded eight years with cells still maintaining an output capacity of over 100 percent of rated capacity; extrapolated results indicated that at least a 10-year life is attainable. Six advanced 2000-Ah Ni-Cd cells demonstrated a cycle life of 600 cycles at the 1C rate while yielding an output capacity of 2100 Ah without cell failure. In addition, the cells demonstrated an energy density of 19 Wh/lb at the 1-hr rate. The Phase II ultimately demonstrated the capability of ERC's Ni-Cd cells to accumulate at lease 500 cycles over the potential 10-year life.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 17, 1994
- Accession Number
- ADA477245
Entities
People
- A. Charkey
- E. Ferreira
Organizations
- Naval Surface Warfare Center