Abstract: A electrochemical cell design, with particular applicability to lithium-iron disulfide batteries, is disclosed. The cell includes a spirally wound electrode assembly with a central core. The core causes uniform expansion within the cathode. The core may also collapse and/or possess a cross sectional shape that differs from the cross sectional shape of the cylindrical container which houses the electrode assembly.

Abstract: An electrochemical battery cell with CuxO, where x is from 0.9 to 1.3, as a positive electrode active material. The specific surface area of the CuxO is from 1.0 to 4.0 m2/gram, preferably from 1.0 to 2.9 m2/g to provide an increase in the high voltage discharge capacity of the CuxO.

Abstract: An electrochemical battery cell with CuO as a positive electrode active material. The specific surface area of the CuO is from 1.0 to 4.0 m2/gram to provide an increase in the high voltage discharge capacity of the CuO.

Abstract: A novel compound that is useful as a battery additive is represented by the formula Ti1−xMxO2−y where M is an element having an octagonal coordination structure, x is from about 0.01 to about 0.5, and y is from about 0.05 to about 0.25. The novel compounds are highly conductive as compared with conventional titanium dioxide additives, and have an expanded rutile crystal structure. The novel compounds are prepared by mixing titanium dioxide with an oxide of M, heating the mixture to form a doped titanium oxide, and reducing the doped titanium oxide.