High Energy Sealed Nickel-Zinc Batteries.
Final annual rept. 1 Mar 72-1 Oct 73,
ENERGY RESEARCH CORP BETHEL CONN
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A sealed 7 Ah6.5 volt nickel-zinc battery has been developed which is capable of 160-200 cycles of operation at approximately 60 depth of discharge at the C4 rate. Initial energy density obtained was 28 Whlb at the C4 discharge rate. The battery will deliver about 40 of its energy at -20F at the C4 rate. With silver amalgam oxygen recombination electrodes the battery is capable of continuous overcharge at 0.5 amperes at a safe steady state pressure below 50 psi. Improved inorganic separators ERC-2002 have been developed which are chemically inert in KOH, have a uniform pore size distribution and stop the occurrance of zinc dendrites. The primary cause of failure of the battery was found to be from the zinc electrode failure. Modified author abstract
- Electrochemical Energy Storage