Use of subfluorinated carbon nano-objects as an electrode material of primary lithium batteries with strong capabilities

A process for the manufacture of a lithium battery electrode, said process comprising the formation of a lithium battery electrode with micrometric grains made of subfluorinated carbon with a graphite crystalline structure, the greatest dimension of which is between 1 and 10 μm, said micrometric grains comprising:

• a central part made of nonfluorinated carbon which represents from 0.8 to 30% by volume of the total volume of the grain, and
• a peripheral part made of fluorinated carbon of formula CFx, where x represents the F/C atomic ratio and is such that 0.25<x<1.1, and the 19F MAS NMR spectrum of which exhibits a single isotropic peak between −150 and −190 ppm/CFCl3, rotational bands excluded, and the electron paramagnetic resonance spectrum of which exhibits 7 signals between 3200 and 3800 G in the X band,
• the electrode obtained having a capacity greater than 100% of the theoretical capacity of the micrometric grain.

A primary lithium battery electrode, wherein it comprises micrometric grains made of subfluorinated carbon with a graphite crystalline structure, the greatest dimension of which is between 1 and 10 μm, said grains comprising:

• a central part made of nonfluorinated carbon which represents from 0.8 to 30% by volume of the total volume of the grain, and
• a peripheral part made of fluorinated carbon of formula CFx, where x represents the F/C atomic ratio and is such that 0.25<x<1.1, and the 19F MAS NMR spectrum of which exhibits a single isotropic peak between −150 and −190 ppm/CFCl3, rotational bands excluded, and the electron paramagnetic resonance spectrum of which exhibits 7 signals between 3200 and 3800 G in the X band,
• the primary battery having a capacity greater than 100% of the theoretical capacity of the micrometric grain.