Lithium secondary cell
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsKazuya Iwamoto, Takafumi Oura, Shinji Nakanishi, Atsushi Ueda, Hizuru Koshina
Life of this patent
Estimating the term…
Abstract
A lithium secondary cell comprising a safe aqueous-solution electrolyte free from danger of firing and explosion and capable of supplying a high voltage of more than 3 V. The cell includes a positive plate having an active material absorbing/desorbing lithium ions and exhibiting a high voltage, a negative plate having an active material exhibiting a low voltage, a polymer solid electrolyte having a lithium-ionic conductivity, and an aqueous-solution electrolyte. The positive and negative plates are coated with a polymer solid electrolyte having an ionic conductivity and therefore isolated from the aqueous-solution electrolyte by the plate coating layers.
Claims6
A lithium secondary battery comprising:
- a positive electrode and negative electrodes having active substances capable of intercalating and de-intercalating lithium ions;
- electrode coating layers made of a water insoluble ion-conductive polymeric solid electrolyte and covering said both electrodes;
- and
- an aqueous electrolytic solution existing between said electroed-coating layers on said both electrodes.
Dependencies are inferred from the claim text.