Solid electrolyte, method of manufacturing the same, and lithium battery including the solid electrolyte
AssigneeSamsung Electronics Co., Ltd.
InventorsHwiyeol Park, Sungjin Lim, Heungchan Lee
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Abstract
A solid electrolyte, a method of manufacturing the same, and a lithium battery including the solid electrolyte. The solid electrolyte may include a solid ion conductor represented by Formula 1: LiaBbAlmQnOcXd Formula 1 wherein, in Formula 1, Q is an element that has an ionic radius that differs from an ionic radius of Al by less than 30% and has +3 and +5 valence states, X is at least one of F, Cl, Br, or I, 3.5≤a≤4.5, 3≤b<5.2, 1≤m≤3, 0<n<2, 11≤c≤13, and 0<d≤1.5.
Claims20
A solid electrolyte comprising a solid ion conductor represented by Formula 1:
- LiaBbAlmQnOcXd Formula 1
- wherein, in Formula 1,
- Q is an element that has an ionic radius that differs from an ionic radius of Al by less than 30% and has +3 and +5 valence states,
- X is at least one of F, Cl, Br, or I,
- 3.5≤a≤4.5, 3≤b<5.2, 1≤m≤3, 0<n<2, 11≤c≤13, and 0<d≤1.5.
A method of manufacturing a solid electrolyte, the method comprising:
- mechanically milling a lithium source, a boron source, an aluminum source, a Q element source, and a halogen source to provide a glassy solid ion conductor;
- and
- heat treating the glassy solid ion conductor at a temperature equal to or greater than an initial thermal decomposition temperature of the glassy solid ion conductor as measured by differential scanning calorimetry to provide a crystal-containing solid ion conductor represented by Formula 1
- LiaBbAlmQnOcXd Formula 1
- wherein, in Formula 1,
- Q is an element that has an ionic radius that differs from an ionic radius of Al by less than 30% and has +3 and +5 valence states,
- X is at least one of F, Cl, Br, or I,
- 3.5≤a≤4.5, 3≤b<5.2, 1≤m≤3, 0<n<2, 11≤c≤13, and 0<d≤1.5.
Dependencies are inferred from the claim text.