6th Edition of International Conference on

Materials Science and Engineering

March 18-20, 2024 | Singapore

Materials 2022

S S Lokesh Vendra

Speaker at Materials Science and Engineering 2022 - S S Lokesh Vendra
Indian Institute of Technology-Madras (IIT Madras), India

Title : Transition metal modified SiOC as a next generation dielectric material for energy storage applications


Amorphous silicon oxycarbides are well-known to be an advanced ceramics because of their exceptional high temperature properties, mechanical properties, and functional properties.  In this study, we used a liquid precursor-derived ceramic method to modify the SiOC with hafnium n tetra butoxide precursor to synthesize the SiOC/HfO2 composites. The powders were sintered using the spark plasma sintering technique to produce sintered pellets of these compistes. X-ray diffractograms confirmed the crystallization phase of tetragonal HfO2 in these composites. The elemental composition and bonding properties were investigated using X-ray photoelectron spectroscopy. Electron microscopy was used to explore morphological features. The dielectric permittivity of the SiOC/HfO2 composites showed a value of εr ~20 and loss of tanδ ~ 0.25 low loss compared to SiOC. The work provides a pathway for cost-effective, tunable, and fully functional SiOC/HfO2 composites for next generation dielectric materials.

What will audience learn from your presentation?

The presentation will give an idea about next generation advanced materials like SiOCs fabricated from polymer derived ceramic (PDC) route. Polymer-derived ceramics (PDCs) have been used and are being considered for a range of applications throughout the past five decades. Most of the available literature on high temperature and mechanical properties, functional properties. Also, proven to be an efficient anode material for battery in energy storage applications. Hence, from this work, it will get to know the maximum possible applications of PDCs including as dielectric materials., which could be sort out design of materials in respective applications.


S S Lokesh Vendra, research scholar pursuing his doctoral thesis under the supervision of Prof. Ravikumar at Department of Metallurgical and Materials Engg., IIT Madras, Chennai, India. He also a visiting scholar and working under Prof. Gurpreet Singh at Kansas State University, Manhattan, Kansas, US. He did his Master of Technology from Department of Metallurgical and Materials Engg., IIT Roorkee, Uttarakhand, India.  His areas of interest on advanced energy storage materials, functional ceramics, materials characterization. Presently he is working on developing the SiOC based materials for energy storage applications through precursor route.