US 12,341,194 B2
Electrode for power storage devices and lithium-ion secondary battery
Takuya Aoki, Tokyo (JP); Shuji Higashi, Tokyo (JP); Miyuki Yanagida, Tokyo (JP); Makoto Endo, Tokyo (JP); and Yoshihiro Kanbayashi, Tokyo (JP)
Assigned to TDK CORPORATION, Tokyo (JP)
Appl. No. 17/634,352
Filed by TDK Corporation, Tokyo (JP)
PCT Filed Mar. 29, 2021, PCT No. PCT/JP2021/013369
§ 371(c)(1), (2) Date Feb. 10, 2022,
PCT Pub. No. WO2022/208625, PCT Pub. Date Oct. 6, 2022.
Prior Publication US 2023/0361299 A1, Nov. 9, 2023
Int. Cl. H01M 4/583 (2010.01); G01N 23/2055 (2018.01); H01M 4/66 (2006.01); H01M 10/0525 (2010.01)
CPC H01M 4/583 (2013.01) [H01M 4/667 (2013.01); H01M 10/0525 (2013.01); G01N 23/2055 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An electrode for power storage devices, the electrode comprising:
a resin layer;
a conductive layer containing copper and being disposed on the resin layer; and
an active material layer containing graphite and being disposed on the conductive layer,
wherein when measured by an X-ray diffraction method from a surface of the active material layer, a peak intensity ratio A/B between an intensity A at a highest X-ray diffraction peak in a range where a diffraction angle (2θ) is 48° or more and 53° or less and an intensity B at a highest X-ray diffraction peak in a range where a diffraction angle (2θ) is 52° or more and 57° or less satisfies Expression (1) below:
0.3≤A/B≤1  (1).