Lithium sulfur nitrogen compound for anode barrier coating or solid electrolyte
AssigneesSamsung Electronics Co., Ltd., Massachusetts Institute of Technology
InventorsLincoln J. Miara, Naoki Suzuki, William D. Richards, Yan E. Wang, Jae Chul Kim, Gerbrand Ceder
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Abstract
Provided is a lithium-conductive solid-state electrolyte material that comprises a sulfide compound of a composition that does not deviate substantially from a formula of Li9S3N. The compound's conductivity is greater than about 1×10−7 S/cm at about 25° C. and is in contact with a negative electroactive material. Also provided is an electrochemical cell that includes an anode layer, a cathode layer, and the electrolyte layer between the anode and cathode layers. In an example, the material's activation energy can be no greater than about 0.52 eV at about 25° C.
Claims8
A battery comprising:
- a cathode;
- a barrier layer comprising a sulfide compound having a formula of Li9S3N;
- an anode comprising an anode material electrically coupled to the sulfide compound;
- and
- an electrolyte layer comprising the sulfide compound,
- wherein the electrolyte layer is between the cathode and the anode, and the barrier layer is between the electrolyte layer and the anode, and
- wherein an electrically conductive pathway is present between the sulfide compound and the anode material.
Dependencies are inferred from the claim text.