Electrochemical cell
Patent
·
OSTI ID:6801038
This paper describes an electrochemical cell having a spirally wound electrode stack. It comprises: an anode, a cathode, and a separator spirally wound together with the separator positioned between the anode and cathode, whereby an outer segment of the anode lies along the outer circumference of the electrode stack and the remainder of the circumference comprises an outer segment of the cathode, wherein the outer anode segment comprises no more than 10% of the total anode length; and anode tab attached to the inner surface of the outer segment of anode; an electrolyte; an electrically conductive member in mechanical and electrical contact with the outer cathode segment. Said member extends over the outer anode segment and beyond the outer edge thereof; and an insulating means located along the inner surface of the outer anode segment which means is a barrier to ion migration; whereby, during voltage reversal, anode metal is preferentially plated from the outer surface of the outer anode segment to the conductive member juxtaposed thereto.
- Assignee:
- Duracell, Inc., Bethel, CT (USA)
- Patent Number(s):
- US 4937154; A
- Application Number:
- PPN: US s 7-271793
- OSTI ID:
- 6801038
- Country of Publication:
- United States
- Language:
- English
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