US 12,224,434 B2
Silicon-oxygen compound, preparation method thereof, and related battery module, battery pack and device
Chengdu Liang, Ningde (CN); Yingjie Guan, Ningde (CN); Yuzhen Zhao, Ningde (CN); Yan Wen, Ningde (CN); and Qisen Huang, Ningde (CN)
Assigned to CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong (CN)
Filed by CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong (CN)
Filed on Jan. 3, 2021, as Appl. No. 17/140,088.
Application 17/140,088 is a continuation of application No. PCT/CN2020/102044, filed on Jul. 15, 2020.
Claims priority of application No. 201910688461.5 (CN), filed on Jul. 29, 2019.
Prior Publication US 2021/0175499 A1, Jun. 10, 2021
Int. Cl. H01M 4/48 (2010.01); H01M 4/04 (2006.01); H01M 4/36 (2006.01); H01M 4/38 (2006.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/48 (2013.01) [H01M 4/0428 (2013.01); H01M 4/364 (2013.01); H01M 4/38 (2013.01); H01M 10/0525 (2013.01); H01M 2004/021 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A silicon-oxygen composite having a chemical formula of SiOx, in which 0<x<2;
sulfur element having a content of 20 ppm-600 ppm; and
manganese element having a content from 5 ppm to 300 ppm,
wherein a mass ratio of the sulfur element to the manganese element is from 1.5 to 10.0,
wherein an X-ray diffraction pattern of the silicon-oxygen composite has:
a first diffraction peak at a position where the diffraction angle 2θ is 26°-30°, wherein the full width at half maxima of the first diffraction peak is 0.8°-3.2°;
a second diffraction peak at a position where the diffraction angle 2θ is 46°-50°, wherein the full width at half maxima of the second diffraction peak is 1.0°-4.2°; and
a third diffraction peak at a position where the diffraction angle 2θ is 54°-58°, wherein the full width at half maxima of the third diffraction peak is 0.8°-4.5° wherein a content of the manganese element is from 5 ppm to 300 ppm.