Chloride-based solid electrolyte, all-solid-state battery including the same, and method for preparing the same
AssigneeKorea Electronics Technology Institute
InventorsKeonho PARK, Woosuk CHO, Jisang YU, Goojin JEONG, Kyungsu KIM
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Abstract
A chloride-based solid electrolyte with improved lithium ion conductivity and electrochemical oxidation stability is proposed. The chloride-based solid electrolyte may be represented by Chemical Formula, Li2+aMCl6−bOc, in which some of chloride ions (Cl−) are substituted with oxygen ions (O2−), wherein M denotes metal which is at least one of Zr, Ti, Hf, Fe, or Co, and wherein −0.5<a+b−2c<0.5 and 0<c<2.
Claims12
A chloride-based solid electrolyte represented by Chemical Formula below in which some of chloride ions (Cl−) are substituted with oxygen ions (O2−),
- Chemical Formula
- Li2+aMCl6−bOc
- wherein M denotes metal which is at least one of Zr, Ti, Hf, Fe, or Co, and wherein −0.5<a+b−2c<0.5 and 0<c≤2.
A method for preparing a chloride-based solid electrolyte, the method comprising:
- providing LiCl, Li2O and metal (M) chloride;
- and
- ball-milling the LiCl, the Li2O and the metal (M) chloride to prepare a chloride-based solid electrolyte represented by Chemical Formula below,
- Chemical Formula
- Li2+aMCl6−bOc
- wherein M is at least one of Zr, Ti, Hf, Fe, or Co, and wherein −0.5<a+b−2c<0.5 and 0≤c≤2.
An all-solid-state battery including a chloride-based solid electrolyte represented by Chemical Formula below in which some of chloride ions (Cl−) are substituted with oxygen ions (O2−),
- Chemical Formula
- Li2+aMCl6−bOc
- wherein M denotes metal which is at least one of Zr, Ti, Hf, Fe, or Co, and wherein −0.5<a+b−2c≤0.5 and 0<c≤2.
Dependencies are inferred from the claim text.