Patent · US Active

Negative electrode active material layer with controlled reflectance and lithium ion secondary battery

US11757098B2 · kind B2 · utility

0Cited by

1References

16Claims

0Family size

Assignee

TDK CORPORATION · JP

Inventors

Keitaro Otsuki · Tokyo, JP
Tetsu Sato · Chuo, JP
Masahiro Saegusa · Mitaka, JP

Key dates

Filing date	Apr 16, 2021
Grant date	Sep 12, 2023
Priority date	—
Expiry date	Feb 15, 2042

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E60/10
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A negative electrode includes a current collector and a negative electrode active material layer that is provided on the current collector and includes a negative electrode active material. The negative electrode active material includes a carbon material, and a surface of the negative electrode active material layer has a spectral reflectance Ra in a range of 7.0≤Ra≤10.8% at a wavelength of 550 nm.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.