Solid ion conductor, solid electrolyte and electrochemical cell comprising the same, and method of preparing the solid ion conductor
AssigneeSamsung Electronics Co., Ltd.
InventorsWonsung Choi, Jusik Kim, Gabin Yoon
Life of this patent
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Abstract
A solid ion conductor, a solid electrolyte and electrochemical device including the same, and a method of preparing the solid ion conductor are disclosed. The solid ion conductor includes a compound represented by Formula 1: LiaMbM′cXdOe Formula 1 wherein, in Formula 1, M is one or more metals selected from Lu, Ho, Nd, Sm, Eu, Gd, Tb, Dy, Er, Tm, Yb, Ga, In, Ce, Pr, Ti, Zr, or Hf, each having an oxidation number of +3 or +4, M′ is one or more metals selected from Na, K, Cs, Cu, or Ag, each having an oxidation number of +1, X is one or more halogens, 0<a<4, 0.5<b<1.5, 0≤c<1.5, 0<d<6.5, and 0<e<1.
Claims29
A solid ion conductor comprising a compound represented by Formula 1:
- LiaMbM′cXdOe Formula 1
- wherein, in Formula 1,
- M is one or more metals selected from Lu, Ho, Nd, Sm, Eu, Gd, Tb, Dy, Er, Tm, Yb, Ga, In, Ce, Pr, Ti, Zr, or Hf, each having an oxidation number of +3 or +4,
- M′ is one or more metals selected from Na, K, Cs, Cu, or Ag, each having an oxidation number of +1,
- X is one or more halogens,
- 0<a<4, 0.5<b<1.5, 0<c<1.5, 0<d<6.5, and 0<e<1,
- when M is Zr, 0<c<1.5;
- and
- when M is one or more metals selected from Lu, Ho, Nd, Sm, Eu, Gd, Tb, Dy, Er, Tm, Yb, Ga, In, Ce, Pr, Ti, or Hf, or when M is Zr in combination with one or more metal selected from Lu, Ho, Nd, Sm, Eu, Gd, Tb, Dy, Er, Tm, Yb, Ga, In, Ce, Pr, Ti, or Hf, 0≤c≤1.5.
A solid ion conductor comprising a compound represented by Formula 5 or 6:
- LipMqXr-wOw Formula 5
- wherein, in Formula 5,
- M is one or more metals selected from Lu, Ho, Nd, Sm, Eu, Gd, Tb, Dy, Er, Tm, Yb, Ga, In, Ce, Pr, Ti, Zr, or Hf, each having an oxidation number of +3,
- X is one or more selected from Cl or Br,
- 0<p<4, 0.5<q<1.5, 0<r<6.5, 0<w<1, and 0<w/q<0.5;
- LipMqM′zXr-wOw Formula 6
- wherein, in Formula 6,
- M is one or more metals selected from Lu, Ho, Nd, Sm, Eu, Gd, Tb, Dy, Er, Tm, Yb, Ga, In, Ce, Pr, Ti, Zr, or Hf, each having an oxidation number of +3,
- M′ is one or more metals selected from Na, K, Cs, Cu, or Ag, each having an oxidation number of +1,
- X is one or more selected from Cl or Br,
- 0<p<4, 0.5<q<1.5, 0<z<1.5, 0<r<6.5, 0<w<1, and 2<p/q<6, 0<w/q<0.5.
A method of preparing a solid ion conductor, the method comprising:
- preparing a precursor for forming the solid ion conductor;
- providing a precursor mixture for forming the solid ion conductor by performing mechanical milling of the solid-ion-conductor forming precursor;
- and
- preparing the solid ion conductor comprising a compound represented by Formula 1 by molding the solid-ion-conductor forming precursor mixture:
- LiaMbM'cXdOe,
- wherein, in Formula 1,
- M is one or more metals selected from Lu, Ho, Nd, Sm, Eu, Gd, Tb, Dy, Er, Tm, Yb, Ga, In, Ce, Pr, Ti, Zr, or Hf, each having an oxidation number of +3 or +4, M′ is one or more metals selected from Na, K, Cs, Cu, or Ag, each having an oxidation number of +1,
- X is one or more halogens,
- 0<a<4, 0.5<b<1.5, 0<d1<6.5, and 0<e<1,
- when M is Zr, 0<c<1.5, and
- when M is Zr, 0<c<1.5;
- and
- when M is one or more metals selected from Lu, Ho, Nd, Sm, Eu, Gd, Tb, Dy, Er, Tm, Yb, Ga, In, Ce, Pr, Ti, or Hf, or when M is Zr in combination with one or more metal selected from Lu, Ho, Nd, Sm, Eu, Gd, Tb, Dy, Er, Tm, Yb, Ga, In, Ce, Pr, Ti, or Hf, 0≤c<1.5.
Dependencies are inferred from the claim text.