Rechargeable batteries like lithium-ion batteries often suffer from limited capacity and shorter lifespan due to inefficient electrode design. Traditional silicon-based electrodes degrade over time because of poor structure and material interaction, reducing performance and reliability.
Core Innovation
This invention introduces a new kind of battery electrode made of three layers:
- A conductive base, usually copper.
- A silicon film that acts as a foundation.
- A silicon fibre layer grown on top, with each fibre having a unique, variable thickness.
Unlike conventional electrodes, these silicon fibres don’t have a uniform size. Their varying widths significantly increase surface area, allowing more lithium ions to interact with the electrode during charging and discharging.
What’s New
The breakthrough is in the controlled manufacturing method. By precisely adjusting the gas flow while growing the silicon fibres, the invention creates fibres with alternating thick and thin sections. This structural difference increases efficiency and durability. An added oxidized layer between the copper base and silicon prevents harmful chemical migration, improving overall stability.
Tangible Benefits
- Increased battery capacity due to higher ion contact.
- Longer battery life, with slower performance degradation over time.
- Better reliability, thanks to reduced material breakdown.
- Cost-effective and scalable manufacturing, using known deposition techniques.
Broader Impact
This technology can lead to more powerful and longer-lasting batteries for electronics, electric vehicles, and renewable energy storage. It supports sustainability by extending battery lifespans and reducing waste—an important contribution in the push for greener technologies. This invention stands out because it solves old problems with a smart new structure and a clever manufacturing trick—making it a compelling step forward in battery technology.