High performance anode material for lithium-ion battery
First Claim
1. A battery comprising:
- a cathode;
a separator;
an anode having a composite particle, said composite particle having a matrix defining a void volume, said void volume comprised of a plurality of porosity channels and an expansion accommodation pore; and
a lithium-alloying particle, said lithium-alloying particle contained within said expansion accommodation pore of said anode.
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Accused Products
Abstract
An anode material with lithium-alloying particles contained within a porous support matrix is provided. The porous support matrix preferably has a porosity of between 5 and 80% afforded by porosity channels and expansion accommodation pores, and is electrically conductive. More preferably the support matrix has a porosity of between 10 and 50%. The support matrix is made from an organic polymer, an inorganic ceramic or a hybrid mixture of organic polymer and inorganic ceramic. The organic polymer support matrix and can be made from a rod-coil polymer, a hyperbranched polymer, UV cross-linked polymer, heat cross-linked polymer or combination thereof. An inorganic ceramic support matrix can be made from at least one group IV-VI transition metal compound, with the compound being a nitride, carbide, oxide or combination thereof. The lithium-alloying particles are preferably nanoparticles with a mean linear dimension of between 5 and 500 nanometers, and more preferably have a mean linear dimension of between 5 and 50 nanometers.
56 Citations
28 Claims
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1. A battery comprising:
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a cathode; a separator; an anode having a composite particle, said composite particle having a matrix defining a void volume, said void volume comprised of a plurality of porosity channels and an expansion accommodation pore; and a lithium-alloying particle, said lithium-alloying particle contained within said expansion accommodation pore of said anode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification