Hollow silicon structures for use as anode active materials in lithium-ion batteries
AssigneeUWM Research Foundation, Inc.
InventorsJunhong Chen, Xingkang Huang
Life of this patent
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Abstract
The present disclosure relates generally to the field of lithium-ion batteries and battery modules. More specifically, the present disclosure relates to Si-based anode materials for use as anode active materials for lithium-ion batteries. One example includes micron/nano-scale structures that include a carbonate template structure and a silicon (Si) layer conformally deposited over the carbonate template. Another example includes a hollow, micron/nano-scale silicon structure having an oxygen content less than approximately 9%, wherein the interior of the hollow micron/nano-scale silicon structure is substantially free of carbon.
Claims19
A hollow, micron/nano-scale silicon structure having an oxygen content less than approximately 9%, wherein the interior of the hollow micron/nano-scale silicon structure is substantially free of carbon, wherein the micron/nano-scale silicon structure has a flower morphology that comprises a plurality of curled petals extending out from a central portion of the micron/nano-scale silicon structure.
A lithium-ion battery cell, comprising:
- an anode having an anode active layer, comprising:
- a binder;
- a conductive carbon;
- and
- a plurality of hollow flower silicon structures having an oxygen content less than approximately 9%, wherein the interior surfaces of the plurality of hollow flower silicon structures are substantially free of carbon, and wherein each of the plurality of hollow flower silicon structures comprises a plurality of curled petals.
Dependencies are inferred from the claim text.