US 11,670,761 B1
Negative electrode sheet and manufacturing method thereof and battery
Qingqing Song, Guangdong (CN); Long Zhang, Guangdong (CN); Yinghui Xu, Guangdong (CN); Junwen Zhang, Guangdong (CN); Xin Lin, Guangdong (CN); and Daohan Cai, Guangdong (CN)
Assigned to Shenzhen Hairun New Energy Technology Co., Ltd., Guangdong (CN); and Xiamen Hithium Energy Storage Technology Co., Ltd., Fujian (CN)
Filed by Shenzhen Hairun New Energy Technology Co., Ltd., Guangdong (CN); and Xiamen Hithium Energy Storage Technology Co., Ltd., Fujian (CN)
Filed on Feb. 20, 2023, as Appl. No. 18/111,735.
Claims priority of application No. 202211107279.4 (CN), filed on Sep. 13, 2022.
Int. Cl. H01M 4/36 (2006.01); H01M 4/62 (2006.01); H01M 4/48 (2010.01); H01M 4/04 (2006.01); H01M 4/02 (2006.01)
CPC H01M 4/366 (2013.01) [H01M 4/0402 (2013.01); H01M 4/48 (2013.01); H01M 4/625 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01)] 20 Claims
OG exemplary drawing
 
8. A battery, comprising:
an electrolyte;
a positive electrode sheet immersed in the electrolyte;
a separator located at one side of the positive electrode sheet and immersed in the electrolyte; and
a negative electrode sheet disposed at one side of the separator away from the positive electrode sheet, wherein the negative electrode sheet comprises:
a conductive fiber cloth serving as a current collector of the negative electrode sheet;
a support layer formed on a surface of the conductive fiber cloth and comprising a plurality of protruding units, wherein each of the plurality of protruding units comprises a plurality of needle-shaped protrusions, the plurality of needle-shaped protrusions of each protruding unit are arranged radially, and the support layer is made of basic cobalt nickel carbonate (NiCo(CO3)0.5OH); and
an active material layer comprising a plurality of active portions, wherein each of the plurality of active portions is formed on a surface of one of the plurality of needle-shaped protrusions, different active portions are formed on surfaces of different needle-shaped protrusions, and a plurality of portions corresponding to each protruding unit are arranged radially;
wherein each of the plurality of active portions comprises a plurality of active sub-layers, the plurality of active sub-layers of each active portion are arranged sequentially in an extension direction of a needle-shaped protrusion, each of the plurality of active sub-layers comprises a plurality of active pieces, the plurality of active pieces of each active sub-layer are arranged sequentially around a periphery of a needle-shaped protrusion, and each of the plurality of active portions is made of antimony trioxide (Sb2O3).