Sodium-ion secondary batteries for sustainable energy storage


  • Pratap Kollu ⋅ IN Centre for Advanced Studies for Electronics Science and Technology, University of Hyderabad, India


Large-scale energy storage is required due to the depletion of renewable energy as well as the intermittent nature of wind and solar energy. Electrochemical energy storage is advantageous due to its rapid response time and efficient energy conversion. Lithium-ion battery (LIB) dominates the current portable electronics and electric vehicles due to their high charge storing capacity and engineering flexibility. The use of LIBs is widespread in modern electronic devices, electric vehicles, and hybrid electric vehicles. The price of lithium and the cost of LIB energy storage are major factors hindering large-scale renewable energy storage. Due to the scarcity of lithium sources, in addition to those of nickel and cobalt, and the high cost of such mined metals, it is time to find alternatives. Sodium batteries have demonstrated great promise; researchers are working to enhance the battery performance of the innumerable sodium battery types. Sodium-ion batteries (SIBs) aim particularly for large-scale energy storage. Six times as much Sodium as lithium can be found in the Earth’s crust. Since their chemistry and production processes are so similar, SIB can use LIB's infrastructure and tools. The mining techniques for lithium, cobalt, or manganese involve concentrated acid treatments from both fuels and wastewater resources. Environmental pollution, vast mining and transport costs make lithium-ion batteries expensive. On the other hand, simple seawater evaporation for Sodium using conventional extraction techniques is cheap. Also, sodium resources are distributed all over the globe, which reduces the need for transportation and related expenses. Due to the slight difference between Na/Na+ (2.71 V) and Li/Li+ (3.04 V) conversion potentials, high-voltage sodium-ion batteries are feasible.

About the Speaker

Pratap Kollu, Centre for Advanced Studies for Electronics Science and Technology, University of Hyderabad, India

Pratap Kollu is an Assistant Professor at the Centre for Advanced Studies in Electronics Science and Technology (CASEST), School of Physics at the University of Hyderabad, India. He is also Newton Alumnus researcher to Cavendish laboratory, University of Cambridge, UK. His PhD in Materials Engineering is from Chungnam National University, Daejeon, South Korea. He completed his MPhil and MSc in Electronics from Andhra University, Visakhapatnam, India. He is a gold medalist from the university during his master's course. His post-doctoral positions are at the Tyndall National Institute, Ireland, Indian Institute of Technology (IIT) Bombay, and at the University of Cambridge, UK. He is awarded the Newton International fellowship jointly by the Royal Society, UK and the British Academy, UK and he is awarded the INSPIRE faculty fellowship by Department of Science and Technology (DST), Government of India. His research areas include design and fabrication of magnetic sensors, porotype development for navigation and biosensor applications. He also works on 2D material metal nanocomposites for energy, multiferroics and water purification applications. He has published in 80 international peer-reviewed journals. He is also a recipient of a Young Scientist Award during the 9th International Conference on Advanced Materials and Processing held at Northeastern University, Shenyang, China (2018). He has been a Keynote/Invited speaker at 44 international conferences held around India, China, Peru, New Zealand, the UK, and the USA.



Article ID



Invited Presentations



How to Cite

P Kollu, Sodium-ion secondary batteries for sustainable energy storage, Proceedings of the Samahang Pisika ng Pilipinas 42, SPP-2024-INV-3D-01 (2024). URL: