US 12,230,417 B2
Solid ion conductor, solid electrolyte including the same, electrochemical device including the same, and preparation method thereof
Hyeokjo Gwon, Hwaseong-si (KR); Sungkyun Jung, Suwon-si (KR); and Jusik Kim, Hwaseong-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Gyeonggi-Do (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Aug. 2, 2021, as Appl. No. 17/391,340.
Claims priority of application No. 10-2020-0098821 (KR), filed on Aug. 6, 2020.
Prior Publication US 2022/0044837 A1, Feb. 10, 2022
Int. Cl. H01M 10/0562 (2010.01); H01B 1/08 (2006.01); H01B 13/00 (2006.01); H01M 4/04 (2006.01); H01M 4/36 (2006.01)
CPC H01B 1/08 (2013.01) [H01B 13/0016 (2013.01); H01M 4/0407 (2013.01); H01M 4/366 (2013.01); H01M 10/0562 (2013.01); H01M 2300/0071 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A solid ion conductor comprising: a garnet-type oxide represented by Formula 2:
LiAM1B(Laa1M2a2)3(Zrb1M3b2M4b3)2OHXI  Formula 2
wherein, in Formula 2,
M1 is a monovalent cation, a divalent cation, a trivalent cation, or a combination thereof,
M2 is a monovalent cation, a divalent cation, a trivalent cation, or a combination thereof,
M3 is Al, Ga, Ta, Nb, Hf, Ti, V, Cr, Co, Ni, Cu, Mo, W, Mg, Tc, Pd, Sc, Cd, In, Sb, Te, Tl, Pt, Si, or a combination thereof,
M4 is Ir, Ru, Mn, Sn or a combination thereof,
X is a monovalent anion, a divalent anion, a trivalent anion, or a combination thereof,
6≤A≤8, 0≤B<2, 9≤H≤12, and 0≤I≤2 are satisfied, and
a1+a2=1, 0<a1≤1, 0≤a2≤0.067, b1+b2+b3=1, 0<b1<1, 0<b2<1, and 0<b3≤0.1 are satisfied.
 
3. A solid ion conductor comprising a garnet-type oxide represented by Formula 4:
Li7-wM1xLa3-yM2yZr2-z-uM3zM4uO12-vXv  Formula 4
wherein, in Formula 4,
M1 is H, Fe, B, Be, or a combination thereof,
M2 is Ca, Sr, Bi, or a combination thereof,
M3 is Al, Ga, Ta, Nb, Hf, Ti, V, Cr, Co, Ni, Cu, Mo, W, Mg, Tc, Pd, Sc, Cd, In, Sb, Te, Tl, Pt, Si, or a combination thereof,
M4 is Ir, Ru, Mn, Sn, or a combination thereof,
X is a monovalent anion, a divalent anion, a trivalent anion, or a combination thereof, 0≤x≤2, 0≤y≤0.2, x+y≠0, 0<z<2, 0<u≤0.2, 0<v<2, 0<z+u<2, and w=[a×x]+[(b−3)×y]+[(c−4)×z]+[(d−4)×u]+[(e+2)×v] are satisfied, and
a is an oxidation number of M1, b is an oxidation number of M2, c is an oxidation number of M3, d is an oxidation number of M4, and e is an oxidation number of X.
 
21. A method of preparing the solid ion conductor of claim 1, the method comprising:
providing a precursor mixture comprising a precursor for forming the solid ion conductor; and
heat-treating the precursor mixture under an oxidative atmosphere to provide the solid ion conductor comprising a garnet-type oxide represented by Formula 2:
LiAM1B(Laa1M2a2)3(Zrb1M3b2M4b3)2OHXI  Formula 2
wherein, in Formula 2,
M1 is a monovalent cation, a divalent cation, a trivalent cation, or a combination thereof,
M2 is a monovalent cation, a divalent cation, a trivalent cation, or a combination thereof,
M3 is Al, Ga, Ta, Nb, Hf, Ti, V, Cr, Co, Ni, Cu, Mo, W, Mg, Tc, Sc, Cd, In, Sb, Te, Tl, Pt, Si, or a combination thereof,
M4 is Ir, Ru, Mn, or a combination thereof,
X is a monovalent anion, a divalent anion, a trivalent anion, or a combination thereof, and
6≤A≤8, 0≤B<2, 9≤H≤12, and 0≤I≤2 are satisfied, and
a1+a2=1, 0<a1≤1, 0≤a2≤0.067, b1+b2+b3=1, 0<b1<1, 0<b2<1, and 0<b3≤0.1 are satisfied.