TIN IN ACTIVE SUPPORT MATRIX

摘要

PROBLEM TO BE SOLVED: To improve energy density of a negative electrode material.

SOLUTION: A negative electrode material made from nanoparticles is provided, and the negative electrode material includes a homogeneous mixture of lithium-alloying nanoparticles with active support matrix nanoparticles. The active support matrix nanoparticle is a compound that participates in a conversion reaction of a lithium battery. The compound is preferably a transition metal compound, and the compound includes a nitride, carbide, oxide or combination thereof. An electrode manufactured from the negative electrode material preferably has a porosity of 5-80% and more preferably has a porosity of 10-50%. The negative electrode material nanoparticles preferably have a mean linear dimension of 2-500 nm, and more preferably have a mean linear dimension of 2-50 nm.

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