US 12,438,145 B2
Electrochemical apparatus and electronic apparatus including same
Molin Zhou, Ningde (CN)
Assigned to NINGDE AMPEREX TECHNOLOGY LIMITED, Ningde (CN)
Filed by Ningde Amperex Technology Limited, Fujian (CN)
Filed on Apr. 25, 2024, as Appl. No. 18/645,907.
Application 18/645,907 is a continuation of application No. PCT/CN2022/075970, filed on Feb. 11, 2022.
Claims priority of application No. PCT/CN2021/126213 (WO), filed on Oct. 25, 2021.
Prior Publication US 2024/0274796 A1, Aug. 15, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 4/36 (2006.01); H01M 4/02 (2006.01); H01M 4/131 (2010.01); H01M 4/136 (2010.01); H01M 4/505 (2010.01); H01M 4/58 (2010.01); H01M 10/0525 (2010.01); H01M 10/0567 (2010.01)
CPC H01M 4/364 (2013.01) [H01M 4/131 (2013.01); H01M 4/136 (2013.01); H01M 4/505 (2013.01); H01M 4/5825 (2013.01); H01M 10/0525 (2013.01); H01M 10/0567 (2013.01); H01M 2004/021 (2013.01); H01M 2004/028 (2013.01)] 20 Claims
 
1. An electrochemical apparatus, comprising a positive electrode, a negative electrode, and an electrolyte; wherein
the positive electrode comprises a positive electrode current collector and a positive electrode material layer on at least one surface of the positive electrode current collector, and the positive electrode material layer comprises a first positive electrode material shown in Formula (I):

OG Complex Work Unit Math
wherein
−0.1<x<0.1, 0<y≤1, 0≤z≤1, 0<y+z≤1, 0≤t<0.2, M comprises at least one of Ti, Zr, V, or Cr, and A comprises at least one of S, N, F, Cl, or Br; and
a second positive electrode material shown in Formula (II);

OG Complex Work Unit Math
wherein
−0.1<r<0.2, 0≤p<0.2, 0≤s<0.2, X comprises at least one of Fe, Co, Ni, Ti, Zn, Mg, Al, V, Cr, or Zr, and T comprises at least one of S, N, F, Cl, or Br; and
the positive electrode satisfies

OG Complex Work Unit Math
wherein
R is a numerical value representing a resistance of the positive electrode (in Ω); P is a numerical value representing a compacted density of the positive electrode (in g/cm3); and Q is a numerical value representing a single-sided surface density of the positive electrode (in g/mm2),
wherein Q is calculated according to Q=1540.25×m/Ar, where m is a numerical value representing a mass of the positive active material layer (in g), and Ar is a numerical value representing an area of the positive active material layer (in mm2).