Non-aqueous electrolyte secondary cell
AssigneeSony Corporation
InventorsAkira Yamaguchi, Atsuo Omaru, Masayuki Nagamine
Life of this patent
Estimating the term…
Abstract
A non-aqueous electrolyte secondary cell which achieves satisfactory low temperature characteristics and high safety against overcharging in combination. The cell includes a lithium-containing cathode, an anode capable of doping and undoping lithium, a non-aqueous electrolyte and a separator. The separator is made up by a plurality of layers of a porous material or materials presenting micro-sized pores. The layers of the porous material or materials is formed of micro-porous separator materials representing different combinations of the porosity, melting point or material/compositions.
Claims19
A non-aqueous electrolyte secondary cell including a lithium-containing cathode active material, an anode active material capable of doping and undoping lithium, a non-aqueous electrolyte and a separator, wherein
- said separator comprises a plurality of layers of a porous material(s) having micro-sized pores;
- and wherein
- said layers of the porous material(s) being formed of micro-porous separator materials representing different combinations of the porosity, melting point or material/compositions.
Dependencies are inferred from the claim text.