Solid state electrolyte and electrochemical cell including the electrolyte
AssigneeUniversity of South Carolina
InventorKevin Huang
Life of this patent
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Abstract
Solid state lithium ion conducting electrochemical cells and methods for forming the cells are described. The electrochemical cells include a composite solid state lithium ion conducting electrolyte separating porous metal supported electrodes. The electrolyte includes a crosslinked oligosiloxane matrix that includes pendant lithium ion chelating functionality that is provided in conjunction with lithium ions and encapsulating lithium ion conducting particles. The solid state electrolyte can extend into the pores of the electrodes to provide high surface area contact and improved electrochemical characteristics.
Claims18
A method of forming an electrochemical cell comprising:
- combining an oligosiloxane with a lithium salt and lithium ion conducting ceramic particles to form a mixture, the mixture comprising lithium ions solubilized from the lithium salt, the oligosiloxane comprising lithium ion chelating functionality and crosslinking functionality;
- impregnating pores of a porous electrode with a first portion of the mixture;
- and
- crosslinking the oligosiloxane to form an electrode sub-assembly including a solid-state electrolyte within the pores of the electrode, the solid-state electrolyte comprising a crosslinked polymer matrix that includes the crosslinked oligosiloxane, the solid-state electrolyte including the lithium ions associated with the crosslinked oligosiloxane and the lithium ion conducting particles encapsulated in the crosslinked polymer matrix.
Dependencies are inferred from the claim text.