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US 11,901,551 B2Granted
Silicon based materials for and method of making and using same
AssigneeSicona Battery Technologies Pty Ltd
InventorsMark N. Obrovac, Leyi Zhao, Vincent J. L. Chevrier
Life of this patent
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Abstract
An electrochemically active material includes silicon and a transition metal. At least 50 mole % of the transition metal is present in its elemental state, based on the total number of moles of transition metal elements present in the electrochemically active material. An electrochemically active material includes silicon and carbon. At least 50 mole % of the carbon is present in its elemental state, based on the total number of moles of carbon present in the electrochemically active material.
Claims12
An electrochemically active material comprising:
- an electrochemically active phase comprising:
- (i) elemental silicon;
- (ii) carbon,
- (iii) a transition metal;
- and
- wherein at least 50 mole % of the carbon is present in its elemental state, based on the total number of moles of carbon present in the electrochemically active material;
- and
- an electrochemically inactive phase, such that the electrochemically active phase and the electrochemically inactive phase share at least one common phase boundary, wherein the electrochemically inactive phase is in the form of or includes one or more electrochemically inactive chemical elements selected from the group consisting of transition metals, alkaline earth metals, rare earth metals, or combinations thereof;
- and
- wherein prior to incorporation of the electrochemically active material into an electrochemical cell, the electrochemically active material bears on an exterior surface thereof a coating that comprises an alkali metal decomposition product.
7 more elements
Dependencies are inferred from the claim text.