18276513. LONG-CYCLE-LIFE, HIGH-CAPACITY SILICON ANODES AND METHODS OF MAKING AND USING THE SAME simplified abstract (THE REGENTS OF THE UNIVERSITY OF CALIFORNIA)
Contents
- 1 LONG-CYCLE-LIFE, HIGH-CAPACITY SILICON ANODES AND METHODS OF MAKING AND USING THE SAME
- 1.1 Organization Name
- 1.2 Inventor(s)
- 1.3 LONG-CYCLE-LIFE, HIGH-CAPACITY SILICON ANODES AND METHODS OF MAKING AND USING THE SAME - A simplified explanation of the abstract
- 1.4 Simplified Explanation
- 1.5 Potential Applications
- 1.6 Problems Solved
- 1.7 Benefits
- 1.8 Potential Commercial Applications
- 1.9 Possible Prior Art
- 1.10 Original Abstract Submitted
LONG-CYCLE-LIFE, HIGH-CAPACITY SILICON ANODES AND METHODS OF MAKING AND USING THE SAME
Organization Name
THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
Inventor(s)
Haodong Liu of San Diego CA (US)
LONG-CYCLE-LIFE, HIGH-CAPACITY SILICON ANODES AND METHODS OF MAKING AND USING THE SAME - A simplified explanation of the abstract
This abstract first appeared for US patent application 18276513 titled 'LONG-CYCLE-LIFE, HIGH-CAPACITY SILICON ANODES AND METHODS OF MAKING AND USING THE SAME
Simplified Explanation
The abstract describes a patent application related to high-energy-density, long-life Li-ion batteries. The technology involves a lithium-ion anode material with a porous core containing silicon and carbon nanotubes, and a dense shell made from lithium vanadium oxide. The lithium vanadium oxide acts as a solid-state mediator layer for the anode material, addressing the issue of significant volume increase when silicon is lithiated. Experimental data shows that the silicon anode material can deliver a specific capacity higher than 2500 mA·h/g, with excellent cycling stability and calendar life at room temperature and elevated temperature.
- The anode material consists of a porous core with silicon and carbon nanotubes, and a dense shell made from lithium vanadium oxide.
- The lithium vanadium oxide acts as a solid-state mediator layer for the anode material, preventing significant volume increase when silicon is lithiated.
- Experimental data demonstrates the anode material's high specific capacity, cycling stability, and calendar life at different temperatures.
Potential Applications
The technology can be applied in high-energy-density, long-life Li-ion batteries for various electronic devices, electric vehicles, and energy storage systems.
Problems Solved
1. Significant volume increase when silicon is lithiated. 2. Electrolyte penetration and instability of the anode material.
Benefits
1. High specific capacity. 2. Excellent cycling stability and calendar life. 3. Mechanical robustness and prevention of electrolyte penetration.
Potential Commercial Applications
Optimized Li-ion batteries for consumer electronics, electric vehicles, and renewable energy storage systems.
Possible Prior Art
One possible prior art could be research on silicon-based anode materials for Li-ion batteries and solid-state mediator layers for addressing volume expansion issues during lithiation.
Unanswered Questions
== How does the lithium vanadium oxide prevent electrolyte penetration in the anode material? The abstract mentions that the lithium vanadium oxide prevents electrolyte penetration in the anode material, but it does not provide specific details on the mechanism behind this phenomenon.
== What are the specific conditions under which the anode material exhibits excellent cycling stability and calendar life at elevated temperatures? The abstract mentions that the anode material shows excellent cycling stability and calendar life at elevated temperatures, but it does not specify the exact conditions or temperature ranges under which these properties are observed.
Original Abstract Submitted
Materials, methods, electrodes, and devices related to high-energy-density, long-life Li-ion batteries are provided. The lithium-ion anode material contains a porous core with silicon and optionally carbon nanotubes, and a dense shell made from lithium vanadium oxide having a disordered rocksalt structure. The lithium vanadium oxide functions as a solid-state mediator layer for the anode material and overcomes the well-known problem of significant volume increase when silicon is lithiated. The lithium vanadium oxide possesses mechanical robustness and prevents electrolyte penetration. For these reasons, the anode material forms a highly stable interface with the battery electrolyte. Experimental data is presented and discussed to demonstrate embodiments of the technology. It is shown that the silicon anode material can reversibly deliver a specific capacity higher than 2500 mA·h/g. The anode material exhibits excellent cycling stability and calendar life at room temperature as well as elevated temperature.
