Silicon Nanowire Breakthrough at DMU Unlocks Lithium-Ion Battery Advancements
Professor Shashi Paul from DMU’s School of Computer Science, Engineering, and Media has recently been awarded a patent for an innovative process to produce silicon nanowires. This breakthrough may be the key to enhancing the performance and efficiency of rechargeable lithium-ion batteries, widely used in devices ranging from smartphones and laptops to drones and electric vehicles.
1. Nano Silicon Production Process and Technical Challenges
Professor Shashi Paul from the School of Engineering, Computing, and Media at DMU has recently been granted a patent for a nano silicon production process. This development could potentially lead to significant improvements in the performance and efficiency of rechargeable lithium-ion batteries, which are widely used in mobile phones, laptops, drones, and electric vehicles.
This property theoretically means that silicon can significantly increase energy density (the amount of energy stored relative to its mass) and improve the charging speed and lifespan of lithium-ion batteries.
However, progress toward this goal has been hindered by several technical challenges, such as silicon’s tendency to expand by up to 400% when fully charged with lithium ions and shrink when discharged. The mechanical stress caused by this expansion and contraction cycle can damage the anode, rendering it unusable.
2. Advantages of Nano Silicon Wires
2.1 Silicon Anode
It has long been known that silicon anodes (i.e., negative electrodes in batteries) can store approximately ten times more charge than the carbon graphite anodes currently used in conventional lithium-ion batteries.
2.2 Environmentally Friendly Process
After years of laboratory work at DMU, Professor Paul successfully patented a new and environmentally friendly process for producing nano silicon in a unique way that helps address the expansion issue.
3. Patent Protection
To secure a patent for this process, Professor Paul had to demonstrate not only that the process works but also that it is novel, unique, and potentially useful. Obtaining the patent means that no one else can copy, use, or sell his invention without permission.
4. Initial Success and Future Directions
Professor Paul’s invention is not just theoretical. During development, he and his research team utilized DMU’s laboratories to create a working prototype of a silicon nanobattery capable of powering an LED light. The team is now focusing on refining and scaling up the process.
5. Plans for Further Development
Professor Paul shared, “My current goal is to take the technology to the next level and continue seeking funding to scale up the technology. We have demonstrated proof of concept and see great potential for further development. Securing the patent is just the first step, but it has strengthened my determination and passion for the project.”
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