Investigations on electrochemical performance of the full cell fabricated LiCoO 2 wrapped with MgO and ZnO for advanced
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Investigations on electrochemical performance of the full cell fabricated LiCoO2 wrapped with MgO and ZnO for advanced lithium ion battery applications S. Pavithra1 · P. Arjunan2 · M. Jayachandran3 · R. Kalaivani1 · M. Selvapandiyan4 · N. Sivakumar1 Received: 16 March 2020 / Accepted: 26 July 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract Developing electrodes with the high efficiency for full cell lithium ion batteries (LIBs) are still challenging. In the present report, we discussed about the performance of LiCoO2 which is analysed by full cell prepared by solid state route. To enhance the electrochemical performance, MgO and ZnO are assigned on the surface of LiCoO2 for better performance. Both ZnO and MgO are synthesized via hydrothermal route. The full cell fabricated with MgO-coated LiCoO2 delivers the high capacity of about 145 mAh/g. The performance of full cell confirms the effect of MgO and ZnO on the surface of L iCoO2 which enhances the efficiency of LIBs.
1 Introduction The demands of energy storage devices has increased owing to usage of energy in day to day life. Among numerous energy storage devices, lithium ion batteries (LIB) are the greater and prominent energy storage devices owing to its features of low maintenance, no memory effect, low selfdischarge, high power density and energy density. LIBs provide their major contribution in the utilisation of transportation and electronic devices. There are three key constituents functioned to make an effective battery such as cathode, anode and electrolyte. Among them, cathode material possess a dominant role in LIB’s whereas variety of cathode materials are served for lithium ion batteries like LiCoO2, LiNiO2, LiMn2O4, LiFePO4. Among them, layered lithium cobalt oxide can work as an excellent cathode material for lithium ion battery applications more than two decades * N. Sivakumar [email protected] 1
PG and Research Department of Physics, Chikkaiah Naicker College, Erode 638 004, India
2
Energy Material Lab, Department of Physics, Alagappa University, Karaikudi, India
3
Department of Physics and Nanotechnology, SRM University, KattankulathurKancheepuram 603203, India
4
Department of Physics, Periyar University PG Extension Centre, Dharmapuri, India
owing to its high theoretical capacity of 274 mAh/g [1–11]. LiCoO2 belongs to rhombohedral structure with R-3 m space group, and also graphite is a most appropriate anode material for LIB’s due to stability and low cost. Unfortunately, LiCoO2 meets some capacity issue in terms of capacity fading due to Co dissolution. The dissolute Co has deposited on the graphite anodes and leaves a capacity loss [12]. Surface coating is an efficient root to reduce the capacity fading and to progress the electrochemical performance, and also which is involved in the prevention of Co dissolution and decomposition of electrolyte, moreover, this technique efficiently comprises in the enrichment of energy density [13]. There are different kinds of metal oxides
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