High temperature storage battery
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United States of America Patent
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Jun 7, 1988
Grant Date -
N/A
app pub date -
Nov 28, 1986
filing date -
Nov 28, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A high temperature, electrochemically reversible cell system comprising a divalent cation conducting solid electrolyte in contact with a positive electrode and a solid-state negative electrode contacting a divalent cation conducting molten salt providing ionic mediation to the solid electrolyte is disclosed. Suitable divalent cations include Ca.sup.2+ ; Sr.sup.2+ ; Ba.sup.2+ ; Zn.sup.2+ ; Cd.sup.2+ ; Pb.sup.2+ ; Hg.sup.2+ ; and Mn.sup.2+. According to a preferred embodiment, Ca.sup.2+ beta'-alumina solid electrolyte is in solid-state contact to a transition metal doped Ca.sup.2+ beta'-alumina positive electrode, and a solid-state calcium alloy negative electrode contacts a calcium halide molten salt providing ionic mediation to the solid-state Ca.sup.2+ beta'-alumina electrolyte.
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