	US 11,749,803 B2
	Cathode material and battery
Tadaaki Matsumura, Shiga (JP); Izuru Sasaki, Kyoto (JP); and Yuta Sugimoto, Hyogo (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
Filed on Jul. 16, 2020, as Appl. No. 16/931,113.
Application 16/931,113 is a continuation of application No. PCT/JP2018/043358, filed on Nov. 26, 2018.
Claims priority of application No. 2018-011533 (JP), filed on Jan. 26, 2018; application No. 2018-011534 (JP), filed on Jan. 26, 2018; and application No. 2018-173451 (JP), filed on Sep. 18, 2018.
Prior Publication US 2020/0350626 A1, Nov. 5, 2020
Int. Cl. H01M 4/62 (2006.01); H01M 4/36 (2006.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 10/0525 (2010.01); H01M 10/0562 (2010.01); H01M 50/431 (2021.01); H01M 4/131 (2010.01)

CPC H01M 4/62 (2013.01) [H01M 4/131 (2013.01); H01M 4/366 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 10/0525 (2013.01); H01M 10/0562 (2013.01); H01M 50/431 (2021.01); H01M 2300/008 (2013.01)]

4 Claims

1. A cathode material, comprising:

particles of a cathode active material comprising a lithium nickel-cobalt-manganese oxide;

a coating layer comprising a first solid electrolyte material forming a coating surrounding a surface of the particles of the cathode active material; and

particles of a second solid electrolyte material,

wherein the first solid electrolyte material is represented by Li₂MgX₄, Li₂FeX₄, Li(Al_aGa_bIn_c)X₄, Li₃(Al_aGa_bIn_c)X₆, where 0≤a≤1, 0≤b≤1, 0≤c≤1, a+b+c=1, or the following composition formula (1):

Li_αM_βX₆ Formula (1)

where 2.5≤α≤3,

1≤β≤1.1,

M includes at least one element selected from the group consisting of Mg, Al, Ca, Sc, Ti, Zn, Ga, Sr, Y, Zr, Nb, Sn, Ba, Hf, Ta, Bi, B, Si, Ge, As, Sb, and Te, and

X includes at least one element selected from the group consisting of Cl and Br,

wherein the second solid electrolyte material is represented by Li₃YX′₆, Li₂MgX′₄, Li₂FeX′₄, Li(Al_a′Ga_b′In_c′)X′₄, Li₃(Al_a′Ga_b′In_c′)X′₆, where 0≤a′≤1, 0≤b′≤1, 0≤c′≤1, a′+b′+c′=1, and X′ includes I and at least one element selected from the group consisting of Cl and Br, and

wherein the particles of the cathode active material and the particles of the second solid electrolyte material are separated by the coating formed by the first solid electrolyte material and are not in direct contact with each other.