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US 10,864,485 B2Granted
Asymmetric membranes
AssigneeGeorgia Southern Research and Service Foundation
InventorsJi Wu, Hao Chen, Ian Byrd
Life of this patent
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Abstract
Disclosed herein are porous asymmetric silicon membranes. The membranes are characterized by high structural stability, and as such are useful as anode components in lithium ion batteries.
Claims12
A process for preparing an asymmetric membrane comprising:
- a) coating a surface of a substrate with a mixture comprising a lithium storage material or source thereof, (para)crystalline carbon, carbonizable polymer and a first solvent comprising one or more water soluble organic solvents;
- b) immersing the coated substrate in a second solvent to generate a film, wherein the second solvent is more polar than the first solvent;
- and
- c) heating the film under conditions sufficient to carbonize the carbonizable polymer.
1 more element
Dependencies are inferred from the claim text.