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Facile One-Step Hydrothermal Synthesis of the [email protected]2O8 Interconnected Hollow Microspheres Composite for Lithium-Ion Batteries

1
Department of Chemical Engineering, Dongguk University, 30, Pildong-ro 1-gil, Jung-gu, Seoul 100-715, Korea
2
Environment, Health, and Welfare Center, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul 02792, Korea
3
Center for Energy Storage Research, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul 02792, Korea
4
Department of Intelligent Mechatronics Engineering, Sejong University, Seoul 05006, Korea
*
Authors to whom correspondence should be addressed.
Nanomaterials 2020, 10(12), 2389; https://doi.org/10.3390/nano10122389
Received: 8 November 2020 / Revised: 26 November 2020 / Accepted: 27 November 2020 / Published: 30 November 2020
Low-cost, vanadium-based mixed metal oxides mostly have a layered crystal structure with excellent kinetics for lithium-ion batteries, providing high energy density. The existence of multiple oxidation states and the coordination chemistry of vanadium require cost-effective, robust techniques to synthesize the scaling up of their morphology and surface properties. Hydrothermal synthesis is one of the most suitable techniques to achieve pure phase and multiple morphologies under various conditions of temperature and pressure. We attained a simple one-step hydrothermal approach to synthesize the reduced graphene oxide coated Nickel Vanadate ([email protected]3V2O8) composite with interconnected hollow microspheres. The self-assembly route produced microspheres, which were interconnected under hydrothermal treatment. Cyclic performance determined the initial discharge/charge capacities of 1209.76/839.85 mAh g−1 at the current density of 200 mA g−1 with a columbic efficiency of 69.42%, which improved to 99.64% after 100 cycles. High electrochemical performance was observed due to high surface area, the porous nature of the interconnected hollow microspheres, and rGO induction. These properties increased the contact area between electrode and electrolyte, the active surface of the electrodes, and enhanced electrolyte penetration, which improved Li-ion diffusivity and electronic conductivity. View Full-Text
Keywords: transition metal oxides; Ni3V2O8; reduced graphene oxide; hydrothermal synthesis; hollow microspheres; lithium ion battery transition metal oxides; Ni3V2O8; reduced graphene oxide; hydrothermal synthesis; hollow microspheres; lithium ion battery
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MDPI and ACS Style

Ghani, F.; Nah, I.W.; Kim, H.-S.; Lim, J.; Marium, A.; Ijaz, M.F.; Rana, A.u.H.S. Facile One-Step Hydrothermal Synthesis of the [email protected]2O8 Interconnected Hollow Microspheres Composite for Lithium-Ion Batteries. Nanomaterials 2020, 10, 2389. https://doi.org/10.3390/nano10122389

AMA Style

Ghani F, Nah IW, Kim H-S, Lim J, Marium A, Ijaz MF, Rana AuHS. Facile One-Step Hydrothermal Synthesis of the [email protected]2O8 Interconnected Hollow Microspheres Composite for Lithium-Ion Batteries. Nanomaterials. 2020; 10(12):2389. https://doi.org/10.3390/nano10122389

Chicago/Turabian Style

Ghani, Faizan, In W. Nah, Hyung-Seok Kim, JongChoo Lim, Afifa Marium, Muhammad F. Ijaz, and Abu u.H.S. Rana. 2020. "Facile One-Step Hydrothermal Synthesis of the [email protected]2O8 Interconnected Hollow Microspheres Composite for Lithium-Ion Batteries" Nanomaterials 10, no. 12: 2389. https://doi.org/10.3390/nano10122389

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