Improved Alkaline Earth-Oxyhalide Electrochemical Cell for Low Temperature Use.
Abstract
This invention relates in general to an alkaline earth-oxyhalide electrochemical cell and in particular, to an improved alkaline earth oxyhalide electrochemical cell for low temperature use. A typical cell includes a calcium anode, 1M Ca(AlCl4)2 thionyl chloride/75 percent Shawinigan - 25 percent acetone washed Black Pearls 2000 carbon black cathode. The improvement to this cell involves the addition of 10 volume percent bromine to the electrolyte. During discharge at about -30 C, cathode potential is raised by about 0.5 volt providing a cell voltage well above the 2.0 volt minimum which is a standard military specification. Without bromine, cell capacity is about one minute. With the addition of bromine, load voltage is initially 2.5 volts, then slowly decreases to 2.0 volts over about twelve minutes.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 20, 1988
- Accession Number
- ADD013756
Entities
People
- Charles W. Walker Jr.
- Michael Binder
Organizations
- United States Army