Patent ID: 11901551
Assignee: SICONA BATTERY TECHNOLOGIES PTY LTD
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B  Y | IPC B  H

Claim 0:
1. 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.