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Facile One-Step Hydrothermal Synthesis of the rGO@Ni3V2O8 Interconnected Hollow Microspheres Composite for Lithium-Ion Batteries.


ABSTRACT: 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 (rGO@Ni3V2O8) 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.

SUBMITTER: Ghani F 

PROVIDER: S-EPMC7760731 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature

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Facile One-Step Hydrothermal Synthesis of the rGO@Ni3V<sub>2</sub>O<sub>8</sub> Interconnected Hollow Microspheres Composite for Lithium-Ion Batteries.

Ghani Faizan F   Nah In Wook IW   Kim Hyung-Seok HS   Lim JongChoo J   Marium Afifa A   Ijaz Muhammad Fazal MF   Rana Abu Ul Hassan S AUHS  

Nanomaterials (Basel, Switzerland) 20201130 12


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 condition  ...[more]

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