Nonaqueous electrolyte secondary battery

Details Nonaqueous electrolyte secondary battery Nonaqueous electrolyte secondary battery

H - Electricity

01

M

H01M 4/133 (2010.01) H01M 4/587 (2010.01) H01M 10/0564 (2010.01) H01M 4/62 (2006.01) H01M 4/58 (2006.01)

Patent

CA 2321313

A nonaqueous electrolyte secondary battery is provided with a positive electrode including a positive-electrode active material, a negative electrode including a negative--electrode active material, and a nonaqueous electrolyte solution. The negative electrode further includes carbon fibers and carbon flakes. The synergistic effects of the improved retention of the electrolyte solution by the carbon fibers and the improved conductivity between the active material particles by the carbon flakes facilitate doping/undoping of lithium in a high-load current mode and increase the capacity of the battery in the high-load current mode.

Accumulateur à électrolyte non aqueux qui est présenté avec une électrode positive, y compris une matière active d'électrode positive, une électrode négative y compris une matière active d'électrode négative, et une solution d'électrolyte non aqueux. L'électrode négative comprend en outre des fibres de carbone et des flocons de carbone. Les effets synergiques d'une meilleure rétention de la solution électrolytique par les fibres de carbone et la conductivité améliorée entre les particules de matière active par les flocons de carbone facilitent le dopage/dédopage du lithium en mode courant de charge élevée et augmentent la capacité de l'accumulateur en mode courant de charge élevée.

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