Batteries are all around us. Different battery chemistries are used for different applications depending on aspects such as energy storage density, cost and power. For example, lead acid batteries are used for starter motors in conventional petroleum vehicles.
Lithium-ion batteries were commercialised in 1991 and the scientists/engineers working on this were awarded the Nobel prize in Chemistry in 2019. Lithium-ion batteries power mobile phones, laptops and electronic devices and are being widely used in electric vehicles and grid scale energy storage, e.g., the Hornsdale plant in South Australia.
There still remain challenges in lithium-ion batteries, ranging from energy storage density to safety to cost. In order to develop the next generation of battery materials and entirely new battery chemistries, we need research and development. This project will give students a taste of this.
What Students will do
Students will be shown how research-scale lithium-ion batteries are made. From the electrode active materials, to electrode preparation and finally to coin cell assembly. This will either be via a session in the laboratory or via online videos/walk-through. Following this students will be given electrochemical performance data also known as charge-discharge curves. They will be able to compare the performance each cycle and after a number of cycles. They can compare between batteries of the same electrodes/composition, between electrodes of different compositions and between entirely different battery systems, e.g., next generation sodium-ion and lithium-sulfur batteries.
Subjects [useful, not essential]
Areas of Student Interest
- Energy & Batteries
- Designing New Materials
- Solid-state Chemistry
- Structure-Property Relations
Lead Academic: A/Prof Neeraj Sharma - Associate Professor, School of Chemistry
Neeraj’s research interests are based on solid state chemistry, designing new materials and investigating their structure-property relationships. He aims to design then fully characterise useful new materials, placing them into real-world devices such as batteries and solid oxide fuel cells, and then characterise how they work in these devices. He loves to undertake in situ or operando experiments of materials inside full devices, especially batteries, in order to elucidate the structural subtleties that lead to superior performance parameters. Neeraj’s projects are typically highly collaborative working with colleagues from all over the world with a range of skillsets.