Toyota jidosha kabushiki kaisha (20240097195). NONAQUEOUS ELECTROLYTE FOR LITHIUM-ION SECONDARY BATTERY AND LITHIUM-ION SECONDARY BATTERY simplified abstract

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NONAQUEOUS ELECTROLYTE FOR LITHIUM-ION SECONDARY BATTERY AND LITHIUM-ION SECONDARY BATTERY

Organization Name

toyota jidosha kabushiki kaisha

Inventor(s)

Akira Kohyama of Aichi-ken (JP)

Ryuta Morishima of Aichi-ken (JP)

Daisaku Ito of Kanagawa-ken (JP)

Naoyuki Iwata of Kanagawa-ken (JP)

NONAQUEOUS ELECTROLYTE FOR LITHIUM-ION SECONDARY BATTERY AND LITHIUM-ION SECONDARY BATTERY - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240097195 titled 'NONAQUEOUS ELECTROLYTE FOR LITHIUM-ION SECONDARY BATTERY AND LITHIUM-ION SECONDARY BATTERY

Simplified Explanation

The abstract describes a nonaqueous electrolyte for use in a lithium-ion secondary battery that can reduce gas generation due to electrolyte degradation. The electrolyte is specifically designed for batteries with negative electrode active materials such as silicon-based or graphite-based carbon materials.

  • The nonaqueous electrolyte contains a nonaqueous solvent, an electrolyte, a cyclic carbonate, and a high-molecular-weight organic compound with a weight-average molecular weight of 1000 or higher.
  • The electrolyte is suitable for lithium-ion secondary batteries with negative electrode active materials capable of absorbing and releasing lithium ions reversibly.

Potential Applications

The technology can be applied in various lithium-ion secondary battery systems, particularly those utilizing silicon-based or graphite-based carbon negative electrode active materials.

Problems Solved

1. Reduction of gas generation in lithium-ion secondary batteries due to electrolyte degradation. 2. Enhanced performance and stability of batteries with negative electrode active materials like silicon or graphite.

Benefits

1. Improved safety and reliability of lithium-ion secondary batteries. 2. Extended battery cycle life and performance. 3. Enhanced energy density and efficiency of battery systems.

Potential Commercial Applications

Optimizing the nonaqueous electrolyte for lithium-ion batteries with specific negative electrode active materials can benefit industries such as electric vehicles, portable electronics, and energy storage systems.

Possible Prior Art

Previous research may have explored similar approaches to improving the stability and performance of nonaqueous electrolytes in lithium-ion batteries, but the specific combination of components in this electrolyte formulation may represent a novel innovation.

Unanswered Questions

How does the high-molecular-weight organic compound contribute to the stability of the electrolyte in lithium-ion batteries with silicon-based or graphite-based carbon negative electrode active materials?

The high-molecular-weight organic compound likely plays a role in enhancing the overall viscosity and stability of the electrolyte, which can help prevent gas generation and improve the cycling performance of the battery. However, the specific mechanisms of how this compound interacts with the other components in the electrolyte formulation may require further research and analysis.

What are the potential challenges or limitations associated with implementing this nonaqueous electrolyte in commercial lithium-ion battery production processes?

While the nonaqueous electrolyte shows promise in reducing gas generation and improving battery performance, there may be challenges in scaling up production, ensuring compatibility with existing battery manufacturing processes, and addressing any cost implications associated with incorporating the additional components in the electrolyte formulation. Further studies and testing under real-world conditions may be needed to address these potential challenges.


Original Abstract Submitted

a nonaqueous electrolyte for use in a lithium-ion secondary battery, capable of reducing gas generation due to degradation of nonaqueous electrolyte, is provided. the nonaqueous electrolyte disclosed herein is for use in a lithium-ion secondary battery wherein a negative electrode active material in a negative electrode includes at least one of a si-based negative electrode active material including si as a component and capable of reversibly absorbing and releasing lithium ions or a graphite-based carbon negative electrode active material. the nonaqueous electrolyte contains a nonaqueous solvent and an electrolyte dissolved in the nonaqueous solvent, and further contains a cyclic carbonate and a high-molecular-weight organic compound having a weight-average molecular weight of 1000 or higher.