The project aims on developing a low-cost novel cathode material for lithium-sulfur batteries for electric vehicle applications. A Sulphur-doped Graphene Oxide/PEDOT (PEDOT/GOS) nanocomposite material has been developed as a cathode material for the Lithium-Sulphur battery. Sulphur is doped with graphene oxide by using the chemical deposition method, whereas PEDOT synthesis is via the co-polymerization method. In this work, the ratio of sulphur doped graphene oxide to PEDOT has been varied and the best combination has been chosen for the fabrication of the electrode material. The synthesized PEDOT/GOS nanocomposite has been confirmed using XRD, FTIR, SEM, and RAMAN spectroscopy. The sharp peak obtained for the synthesized nanocomposite in XRD analysis clearly indicates that the nanocomposite is crystalline in nature and confirms the formation of SGO/PEDOT nanocomposite. The major peaks obtained at 22.080 and 26.050 also confirm the formation of nanocomposite. The peaks obtained at 1215 cm-1, 1369 cm-1, and 1749 cm-1 in FTIR analysis clearly indicate the formation of SGO/PEDOT nanocomposite. The obtained FTIR results clearly confirm the formation of SGO/PEDOT, which is on par with the obtained XRD results. Raman spectroscopy results clearly indicate the formation of nanocomposite. From the results, it was inferred that the presence of sulphur is confirmed by the peaks obtained at 172 and 241, whereas the peaks obtained at 1389 and 1666 depict the presence of graphene oxide. The major obtained at 1495 also confirms the presence of PEDOT in the synthesized nanocomposite. From the SEM image, it was observed that graphene oxide exhibits a sheet like structure which is similar to previous results. The synthesized nanocomposite was fabricated as a coin cell using a lithium metal strip as an anode and the synthesized nanocomposite as a cathode. The fabricated coin cell and pouch cell performance was tested in cyclic voltammetry. The coin cell and pouch cell showed good charging and discharging characteristics. As a result, the developed low-cost SGO/PEDOT exhibits favorable properties as a cathode material for Lithium sulfur batteries.
Design and development of functional materials for energy & environmental applications Brownmillerite Ca2Fe2O5 as a MIEC cathode material for IT SOFC applications .
The Centre for Energy Storage Technologies [CEST] is one of the leading research centres on all aspects of electrical energy storage in India. The CEST is primarily emphasis on the Development of electrochemical energy storage devices with high power density including battery, supercapacitors and Power Dense Devices. The CEST Centre was formed in 2022 to bring together the campus-wide expertise in energy storage, foster collaboration, and provide a focal point for research and education activities.