Lithium secondary cell
AssigneeTDK Corporation
InventorsKeiji Koga, Hisashi Suzuki, Masanori Kaya, Hitoshi Arai, Tsuneo Kagotani, Yousuke Miyaki
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Abstract
A main object of the invention is to provide a lithium secondary cell which experiences minimal capacity deterioration upon repetitive charge-discharge cycles. The lithium secondary cell of the invention is characterized in that a negative and/or positive electrode material is bonded to a current collector surface by a binder containing a crosslinked polymer or formed by coating to a current collector a composition comprising an active material and a polymer binder containing a fluorinated polymer which is curable upon exposure to radiation, followed by radiation curing treatment.
Claims13
A lithium secondary cell comprising:
- carbon as a negative electrode material, and
- a layer lattice compound which allows for intercalation or doping of lithium ions, or carbon, as a positive electrode material,
- wherein said negative electrode material and/or positive electrode material is bonded to a surface of a current collector by a binder containing a crosslinked polymer, wherein said crosslinked polymer contains fluorine.
A lithium secondary cell comprising:
- a non-aqueous electrolyte including a lithium-containing electrolyte, and
- an electrode layer forming a negative electrode and/or positive electrode,
- wherein said electrode layer is formed by coating to a current collector a composition comprising an active material and a polymer binder containing a fluorinated polymer which is curable upon exposure to radiation, followed by radiation curing treating.
Dependencies are inferred from the claim text.