ELECTROCHEMICAL CELL
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United States of America Patent
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Issued Date -
Aug 21, 2014
app pub date -
Feb 13, 2014
filing date -
Feb 18, 2013
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An electrochemical cell of improved anti-leak property is provided. A silver oxide battery includes: a positive electrode canister having a form of a cylinder with a bottom portion; a negative electrode canister having a form of a cylinder with a lid portion and being contained in the positive electrode canister; and an electrolytic solution contained within a space formed by the positive electrode canister and the negative electrode canister. The negative electrode canister is formed into a shape of a double-step cylinder having decreasing inner diameters toward the lid portion. The double-step cylinder has a first cylindrical portion that defines a cylindrical portion closer to the lid portion, and a second cylindrical portion that defines a cylindrical portion farther from the lid portion. The first cylindrical portion has a first inner curved surface that projects out at a first apex. The second cylindrical portion has a second inner curved surface that projects out at a second apex. The angle made by the bottom portion and the straight line connecting the first apex and the second apex to each other ranges from 15° to 45°.
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