US Patent Application 18317927. NEGATIVE ELECTRODE AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY simplified abstract
NEGATIVE ELECTRODE AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
Organization Name
PRIME PLANET ENERGY & SOLUTIONS, INC.
Inventor(s)
Yurika Kojima of Kobe-shi (JP)
Yuki Morikawa of Kobe-shi (JP)
Naoto Onodera of Kobe-shi (JP)
Kouhei Tsuzuki of Kobe-shi (JP)
NEGATIVE ELECTRODE AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A simplified explanation of the abstract
This abstract first appeared for US patent application 18317927 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 graphite particles and Si-containing particles.
- The binder used in the negative electrode active material layer includes carboxymethyl cellulose (CMC), poly acrylic acid (PAA), and styrene butadiene rubber (SBR).
- The negative electrode has a spring constant in the thickness direction between 70 kN/mm and 400 kN/mm.
- The yield loop height on a stiffness test for the negative electrode is equal to or less than 13 mm.
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 a single surface or both surfaces of the current collector. The negative electrode active material layer includes a negative electrode active material and a binder. A graphite particle and a Si-containing particle are included as the negative electrode active material. A carboxymethyl cellulose (CMC), a poly acrylic acid (PAA), and a styrene butadiene rubber (SBR) are included as the binder. A spring constant in a thickness direction of the negative electrode is equal to or more than 70 kN/mm and not more than 400 kN/mm, and a yield loop height on a stiffness test is equal to or less than 13 mm.