Boron oxide-molten salt-based solid electrolyte and preparation method therefor
AssigneeSukgyung At Co., Ltd.
InventorsHyung Sup LIM, Young Chul YOU, Sung Hwa LEE, Jin Hee LEE
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Abstract
Provided is, as a solid electrolyte that is a core material for an all solid state secondary battery, a solid electrolyte of a composite of lithium chloroboracite having a composition of Li4-xB7O12+x/2Cl (x=0-1) and a LiCl—LiBr—LiF molten salt. The boron oxide-molten salt-based solid electrolyte according to the present invention may resolve safety issues of P2S5, Li2S, or the like that is used as a raw material for typical sulfide solid electrolytes.
Claims8
A solid electrolyte of a composite of lithium chloroboracite having a composition of Li4+xB7O12+x/2Cl (x=0-1) and a LiCl—LiBr—LiF molten salt.
A method for preparing a solid electrolyte of a composite of lithium chloroboracite and a LiCl—LiBr—LiF molten salt, the method comprising:
- preparing chloroboracite having a composition of Li4+xB7O12+x/2Cl (x=0-1);
- preparing a LiCl—LiBr—LiF molten salt;
- mixing the LiCl—LiBr—LiF molten salt with the lithium chloroborasite;
- mixing the LiCl—LiBr—LiF molten salt with the chloroborasite;
- pulverizing the raw material mixture;
- and
- sintering the raw material mixture at 500° C. or greater.
Dependencies are inferred from the claim text.