Topic of Research Seminar: Developing high capacity Na2CrO4/C composite anode materials Na-ion batteries

Abstract: Due to their lithium-like de/intercalation mechanism and access to plentiful sodium supplies, sodium-ion batteries (SIBs) are becoming viable contenders for energy storage. However, high performance anode and cathode materials are needed for the deployment of SIBs to be successful. The investigation of Na2CrO4/C nanocomposite as a reasonably high operating voltage (~1 V) anode material for SIBs will be presented in this talk. X-ray diffraction (XRD) was used to analyze the prepared nanocomposite’s structure, and the results demonstrate that a rise in width led to a decrease in crystallite size in the nanocomposite. At a rate of 0.1 C, the produced Na2CrO4/C anode material displays a reversible capacity of 228 mAh g-1, which drops to 166 mAh g-1 at the 100th cycle. The reversible capacity of the Na2CrO4/C anode is 71 mAh g1 at a high rate of 2.0 C. The structure of Na2CrO4/C nanocomposite is elucidated using in-situ XRD and X-ray absorption spectroscopy to determine the oxidation/reduction change of Cr during electrochemical reaction.

Subject Field of Topic: Energy Storage Devices

Name of Speaker: Dr Ghulam Ali

Professorial Rank of Speaker: Associate Professor

Affiliation of Speaker: U.S. Pakistan Center For Advanced Studies In Energy (USPCAS-E), NUST

Venue and Date: Sept 20, 2023, at 1100 hrs, Seminar Hall, School of Interdisciplinary Engineering & Science (SINES), NUST Islamabad Campus