NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

Organization Name

Prime Planet Energy & Solutions, Inc.

Inventor(s)

Shuhei Takeshita of Nagakute-shi (JP)

Yohei Shindo of Toyota-shi (JP)

Kento Hosoe of Miyoshi-shi (JP)

NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A simplified explanation of the abstract

This abstract first appeared for US patent application 18420066 titled 'NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

Simplified Explanation

The patent application describes a nonaqueous electrolyte secondary battery that can prevent an increase in resistance due to repetitive charge and discharge cycles. It includes a positive electrode, a negative electrode, and a nonaqueous electrolyte.

The negative electrode contains two types of active material particles with different aspect ratios.
The mass ratio between these particles is between 50%:50% to 95%:5%.
The nonaqueous electrolyte includes a specific type of nonaqueous solvent with a carboxylate ester.

Key Features and Innovation

Negative electrode with two types of active material particles to prevent resistance increase.
Specific mass ratio and alignment of particles for optimal performance.
Nonaqueous electrolyte with a unique solvent composition for enhanced battery efficiency.

Potential Applications

The technology can be applied in various electronic devices such as smartphones, laptops, and electric vehicles.

Problems Solved

The technology addresses the issue of resistance increase in nonaqueous electrolyte secondary batteries during repetitive charge and discharge cycles.

Benefits

Improved battery performance and longevity.
Enhanced efficiency in electronic devices.
Reduced maintenance and replacement costs.

Commercial Applications

Battery manufacturing industry.
Consumer electronics companies.
Electric vehicle manufacturers.

Questions about Nonaqueous Electrolyte Secondary Battery

How does the alignment of different active material particles in the negative electrode contribute to the battery's performance?

The alignment of particles affects the conductivity and overall efficiency of the battery, helping to maintain low resistance levels.

What are the potential environmental impacts of using nonaqueous electrolyte secondary batteries with this specific composition?

The specific composition of the nonaqueous electrolyte may have implications for recycling and disposal processes, which need to be considered for environmental sustainability.

Original Abstract Submitted

Provided is a nonaqueous electrolyte secondary battery capable of suppressing an increase in resistance caused by repetitive charge and discharge. A nonaqueous electrolyte secondary battery disclosed here includes a positive electrode, a negative electrode, and a nonaqueous electrolyte. The negative electrode includes a negative electrode active material layer containing a negative electrode active material. The negative electrode active material includes first negative electrode active material particles each having an aspect ratio of 1.5 or less and second negative electrode active material particles each having an aspect ratio exceeding 1.5. A mass ratio between the first negative electrode active material particles and the second negative electrode active material particles is 50:50 to 95:5. In addition, 50% or more of the second negative electrode active material particles are aligned such that an angle between a plane direction of the negative electrode active material layer and a major axis of the second negative electrode active material particle is 30° or more. The nonaqueous electrolyte contains a nonaqueous solvent and an electrolyte salt. The nonaqueous solvent contains 1 to 30% by volume of a carboxylate ester having 4 or less carbon atoms.