▎ 摘　　要

NOVELTY - Lithium ion battery nano silicon-based composite fibre cathode material comprises nanometre fibre matrix (300) and nanometre silicon-based active matter particle (100) and conductive polymer (200) uniformly is dispersed in the nanometre fibre matrix, where the nanometre fibre matrix is composed of nanometre fibre matrix and nanometre fibre matrix, the mass fraction of the nano-fiber matrix is 5-97 wt.%, the mass fraction of the nano-silicon-based active particles is 2-70 wt.%, the mass fraction of the conductive polymer is 1-25 wt.%. USE - Lithium ion battery nano silicon-based composite fibre cathode material. ADVANTAGE - The lithium ion battery nano silicon-based composite fibre cathode material is simple to prepare and eco-friendly, and not only has high electron conduction capability, but also can effectively relieve the volume expansion and structure pulverization of the nano-silicon-based active particles, and improve the cycle performance. DETAILED DESCRIPTION - Lithium ion battery nano silicon-based composite fibre cathode material comprises nanometre fibre matrix and nanometre silicon-based active matter particle and conductive polymer uniformly is dispersed in the nanometre fibre matrix, where the nanometre fibre matrix is composed of nanometre fibre matrix and nanometre fibre matrix, the mass fraction of the nano-fiber matrix is 5-97 wt.%, the mass fraction of the nano-silicon-based active particles is 2-70 wt.%, the mass fraction of the conductive polymer is 1-25 wt.%, the nanometre fibre substrate is obtained by electrostatic spinning the spinning solution formed by dissolving the polymer in the organic solvent, the polymer is polyvinyl pyrrolidone, polyvinyl alcohol, polyvinyl butyral, polyacrylonitrile, polyimide, polyvinylidene fluoride in the one kind of or more, and the concentration of the polymer in the spinning solution is 5-20 wt.%. The nano-silicon-based active particle is at least one of silicon-containing compound or compound; the conductive polymer is one or more of polyaniline, poly (p-phenylene), polypyrrole or polythiophene or the polyaniline, poly (p-phenylene), poly (pyrrole), poly-thiophene derivative. The state of the conductive polymer is solid phase nano particle or liquid phase solution. An INDEPENDENT CLAIM is included for a method for preparing lithium ion battery nano silicon-based composite fibre cathode material, which involves niformly mixing the nano-silicon-based active particles with the conductive polymer to form a mixture H1, preparing spinning solution: stirring and dissolving the polymer in the organic solvent and defoaming to prepare uniform spinning solution H2, dispersing mixture H1 int H2 to obtain uniform mixed spinning solution H3, putting spinning liquid H3 into the injector, electrostatic spinning under the high pressure electrostatic field, spinning liquid fine flow solidifying and forming in the air and low temperature vacuum drying to obtain the lithium ion battery nanometre silicon-based composite fibre cathode material. DESCRIPTION OF DRAWING(S) - Nano silicon-based active particles (100) Conductive polymer (200) Nanometer fiber matrix (300)