Low-temperature growth of well-crystalline Co3O4 hexagonal nanodisks as anode material for lithium-ion batteries |
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Authors: | SW Hwang Ahmad Umar SH Kim SA Al-Sayari M Abaker A Al-Hajry A Manuel Stephan |
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Affiliation: | aCollaborative Research Centre for Sensors and Electronic Devices (CRCSED) and Centre for Advanced Materials and Nano-Engineering (CAMNE), Najran University, P.O. Box 1988, Najran 11001, Saudi Arabia;bElectrochemical Power Systems Division, Central Electrochemical Research Institute, Karaikudi 630 006, India |
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Abstract: | Uniform hexagonal-shaped cobalt oxide (Co3O4) nanodisks were prepared in large scale via facile aqueous solution based hydrothermal process at 110 °C. The detailed structural characterizations confirmed that the synthesized products are hexagonal cobalt oxide nanodisks, possessing very well-crystalline cubic spinel structure. A coin cell of type −2032 was assembled using the synthesized Co3O4 nanodisks and its charge–discharge profile was analyzed between the voltages 0.01 and to 2.5 V vs. Li/Li+ reference electrode. The electrochemical cell composed of Li/Co3O4 delivered an initial lithium insertion capacity of 2039 mAh/g. Although the cell exhibited high irreversible capacity during the first four cycles, the columbic efficiency has been improved upon cycling. |
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Keywords: | Co3O4 hexagonal nanodisks Anode material Li-ion batteries |
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