| Pacific Rim Symposium on Surfaces, Coatings and Interfaces (PacSurf 2016) | |
| Energy Harvesting & Storage | Wednesday Sessions |
| Session EH-WeP |
| Session: | Energy Harvesting & Storage Poster Session |
| Presenter: | Chandrasekar M Subramaniyam, Institute for Semiconducting and Electronic Materials AIIM facility, Innovation Campus, University of Wollongong, Australia |
| Authors: | C.M. Subramaniyam, Institute for Semiconducting and Electronic Materials AIIM facility, Innovation Campus, University of Wollongong, Australia H.K. Liu, Institute for Semiconducting and Electronic Materials AIIM facility, Innovation Campus, University of Wollongong, Australia S.X. Dou, Institute for Semiconducting and Electronic Materials AIIM facility, Innovation Campus, University of Wollongong, Australia |
| Correspondent: | Click to Email |
• Li-rich layered cathode material exhibited excellent specific capacity (250 mAh/g) over 100 cycles exhibiting 95-99% coulombic efficiency.
• Therefore, these materials in combination with appropriate electrolytes are expected to perform at high voltage (up to 5 V) which in turn could foresee the requirement for plug-in/ hybrid electric vehicles
A quest to replace fossil fuels so as to ignite the automotive and electronic devices with high-performing, economical and safe power storage simulates R&D in the field of chemical power sources. The past two decades research on lithium-ion batteries (LIBs) proven it to be robust technology in electrify electronic devices and in developing plug-in and hybrid electric vehicles as they delivers high energy and power capabilities. However, the present R&D aimed at beefing up it’s the current state-of-art technology to develop “5 V” cell without sacrificing high specific charge capacity, excellent cyclability and safety1-4. Therefore, the current focus is on the development of cathode materials as the anode materials possess working voltage approximately close to Li metal.
In order to foresee these objectives, herein, we have attempted to synthesis spinel-layered4-7 Li-rich Li-Mn-M-O based composites as cathode material for lithium-ion batteries applications via simple, low temperature - solvothermal method. Both as-obtained and annealed samples were characterized for their phase, morphology using x-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM), respectively. When electrochemically tested against Li+/Li0 between 2.0 – 4.8 V, the annealed Li-rich spinel-layered exhibited excellent specific capacity and rate capability even at high current density, making it as a probable next generation cathode material for LIBs.
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