Nanostructured materials for energy storage (Li-ion/Na-ion/Li-S batteries and supercapacitors), Organic-inorganic hybrid materials, Flexible devices, Recycled materials for energy storage Rechargeable batteries for electric mobility and stationary energy storage
1. Li-ion batteries are the technology of choice for portable electronics because of their omnipresence from mobiles to space applications, for their impressive energy density, lighter weight compared to traditional batteries. The high energy efficiency of Li-ion batteries may allow their use in electric vehicles and various electric grid applications including the energy harvested from wind, solar, geo-thermal and other renewable sources, thus contributing to build an energy-sustainable economy. In view of these expanding applications of Li-ion batteries, the goal is to increase their energy density along with lower cost. One way to achieve these goals is to develop new electrode materials with higher specific capacity than conventionally used materials, while maintaining the stable cycle life. We are working on development of high energy density, stable electrode materials for rechargeable batteries (Li-ion, Na-ion). Several materials including silicon, metal oxides, metal hydroxides, polymers, heteroatom doped carbons, composites etc are being explored.
2.Electrochemical supercapacitors are promising energy storage devices with their capability to deliver high specific power, ability to charge/discharge fast and long cycle lifetime and are being hailed in many new technological applications. We are developing electrode materials for high efficiency supercapacitors. Materials like carbons with controlled porosity, graphene, multilayer fullerenes, metal oxide nanostructures; polymer composites etc are being developed and evaluated electrochemically.
3.Flexible devices: Wearable electronic devices also require lightweight, flexible and sometimes miniaturized energy-storage components. Our research is also directed towards fabrication of flexible platforms for supercapcitors/microcapacitors. Unconventional fabrication techniques are being explored to develop microfabricated materials and devices.