US Patent Application 18317925. NEGATIVE ELECTRODE AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY simplified abstract

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NEGATIVE ELECTRODE AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

Organization Name

PRIME PLANET ENERGY & SOLUTIONS, INC.

Inventor(s)

Yuki Morikawa of Kobe-shi (JP)

Yurika Kojima of Kobe-shi (JP)

Naoto Onodera of Kobe-shi (JP)

Kouhei Tsuzuki of Kobe-shi (JP)

Hideki Sano of Ikeda-shi (JP)

NEGATIVE ELECTRODE AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A simplified explanation of the abstract

This abstract first appeared for US patent application 18317925 titled 'NEGATIVE ELECTRODE AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

Simplified Explanation

The patent application describes a negative electrode for a nonaqueous electrolyte secondary battery.

  • The negative electrode includes a current collector and a negative electrode active material layer.
  • The negative electrode active material layer contains a negative electrode active material and a binder.
  • The negative electrode active material includes graphite particles and Si-containing particles.
  • The graphite particles have an average 10% yield strength of 12 MPa or less.
  • The graphite particles have a BET specific surface area of 0.5 m/g to 3.5 m/g.
  • The negative electrode has a spring constant in the thickness direction of 200 kN/mm or less.
  • The 90° peel strength between the current collector and the negative electrode active material layer is 1.5 N/m or more.


Original Abstract Submitted

The herein disclosed negative electrode is a negative electrode for a nonaqueous electrolyte secondary battery that includes a current collector, and a negative electrode active material layer disposed on the current collector. The negative electrode active material layer includes a negative electrode active material and a binder, and a graphite particle and a Si-containing particle are included as the negative electrode active material. An average 10% yield strength of the graphite particle is equal to or less than 12 MPa. A BET specific surface area of the graphite particle is equal to or more than 0.5 m/g and not more than 3.5 m/g. A spring constant in a thickness direction of the negative electrode is equal to or less than 200 kN/mm. A 90° peel strength between the current collector and the negative electrode active material layer is equal to or more than 1.5 N/m.

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