US Patent Application 18028700. SECONDARY BATTERY NEGATIVE ELECTRODE AND SECONDARY BATTERY simplified abstract
Contents
SECONDARY BATTERY NEGATIVE ELECTRODE AND SECONDARY BATTERY
Organization Name
Panasonic Intellectual Property Management Co., Ltd.
Inventor(s)
Norihisa Yamamoto of Osaka (JP)
Takashi Watanabe of Osaka (JP)
SECONDARY BATTERY NEGATIVE ELECTRODE AND SECONDARY BATTERY - A simplified explanation of the abstract
This abstract first appeared for US patent application 18028700 titled 'SECONDARY BATTERY NEGATIVE ELECTRODE AND SECONDARY BATTERY
Simplified Explanation
The patent application is for a secondary battery negative electrode that includes a mixture layer with specific components.
- The negative electrode mixture layer contains a negative electrode active material that includes a compound called Si.
- The mixture layer also includes a binding material that consists of cellulose nanofibers and single-walled carbon nanotubes.
- The cellulose nanofibers have a very small fiber diameter of 9 nm or less.
- The conductive material, single-walled carbon nanotubes, also have a small fiber diameter of less than 4 nm.
- The content of cellulose nanofibers in the mixture layer is between 0.005% and 0.2% of the mass of the negative electrode active material.
Original Abstract Submitted
A secondary battery negative electrode according to the present invention is provided with a negative electrode mixture layer comprising: a negative electrode active material that contains an Si compound; and a binding material that includes cellulose nanofibers having a fiber diameter of 9 nm or less and a conductive material containing single-walled carbon nanotubes having a fiber diameter of less than 4 nm. The content of the cellulose nanofibers is greater than or equal to 0.005 mass % and less than 0.2 mass % in relation to the mass of the negative electrode active material.
