Positive electrode material for lithium secondary cell

H - Electricity – 01 – M

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H01M 4/02 (2006.01) H01M 4/60 (2006.01) H01M 4/62 (2006.01) H01M 4/58 (2006.01)

Patent

CA 2596000

A first positive electrode material for a lithium secondary cell which comprises an electroconductive polymer having an amino group, a compound capable of forming a hydrogen bonding and a proton acid. The above first positive electrode material uses an electroconductive polymer, such as polyaniline, and exhibits stable electroconductivity over a long period of time. A second positive electrode material for a lithium secondary cell, which comprises an electroconductive polymer and LiNiO2 and/or LiFePO4. The second positive electrode material uses an electroconductive polymer, such as polyaniline, and also exhibits high charge and discharge capacity.

L~invention concerne un premier matériau d~électrode positive pour pile secondaire au lithium comprenant un polymère électroconducteur ayant un groupe aminé, un composé capable de constituer une liaison d~hydrogène et un acide protonique. Le premier matériau d~électrode positive ci-dessus fait appel à un polymère électroconducteur, comme de la polyaniline, et présente une électroconductivité stable sur une période prolongée. L'invention concerne également un second matériau d~électrode positive pour pile secondaire au lithium, comprenant un polymère électroconducteur et du LiNiO2 et/ou du LiFePO4. Le second matériau d~électrode positive fait appel à un polymère électroconducteur, comme de la polyaniline, et présente également une capacité élevée de charge et de décharge.

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