US 12,095,026 B2
All-solid-state battery, manufacturing method therefor, secondary battery comprising same and monolithic battery module comprising same
Sang Cheol Nam, Seoul (KR); In Sung Lee, Seoul (KR); and Eul Noh, Goyang-si (KR)
Assigned to RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY, Pohang-si (KR)
Appl. No. 16/761,308
Filed by RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY, Pohang-si (KR)
PCT Filed Nov. 9, 2018, PCT No. PCT/KR2018/013638
§ 371(c)(1), (2) Date May 4, 2020,
PCT Pub. No. WO2019/098613, PCT Pub. Date May 23, 2019.
Claims priority of application No. 10-2017-0148823 (KR), filed on Nov. 9, 2017.
Prior Publication US 2021/0194046 A1, Jun. 24, 2021
Int. Cl. H01M 10/0562 (2010.01); H01M 4/131 (2010.01); H01M 4/1391 (2010.01); H01M 4/38 (2006.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 10/0585 (2010.01); H01M 4/02 (2006.01)
CPC H01M 10/0562 (2013.01) [H01M 4/131 (2013.01); H01M 4/1391 (2013.01); H01M 4/382 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 10/0585 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01); H01M 2004/028 (2013.01); H01M 2300/0071 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An all-solid-state battery comprising:
a battery supporting member including an oxide-based solid electrolyte of a garnet structure;
a positive electrode disposed on a first surface of the battery supporting member; and
a negative electrode disposed on a second surface of the battery supporting member,
wherein the positive electrode includes
a positive active material layer in contact with the first surface of the battery supporting member and including a positive active material represented by Chemical Formula 1 and an ion conductor, and a conductive material, and
a positive current collector disposed on the positive active material layer:
Lia1Nib1Coc1Mnd1M1e1M2f1O2−f1  [Chemical Formula 1]
(in Chemical Formula 1,
0.97≤a1≤1.07, 0.75≤b1≤0.95, 0.03≤c1≤0.13, 0.001≤d1≤0.12, 0≤e1≤0.05, 0≤f1≤0.01, b1+c1+d1+e1+f1=1,
M1 is one selected from Na, Mg, Al, Si, K, Ca, Sc, Ti, V, B, Cr, Cu, Zn, Ga, Ge, Rb, Sr, Y, Zr, Nb, Mo, Tc, Ru, Rh, Pd, Ag, Cd, In, Sn, Ba, W, and combinations thereof, and
M2 is one selected from N, F, P, S, Cl, Br, I, and combinations thereof), and
wherein
the ion conductor is trilithium borate (Li3BO3) and is included in a 5 volume % to 15 volume % range with reference to a total volume of the positive active material layer and
the positive active material is included in a 60 volume % to 80 volume % range with reference to the total volume of the positive active material layer, and
the conductive material is included in a 10 volume % to 35 volume % range with reference to the total volume of the positive active material layer.