Advanced Fiber Materials, Volume. 6, Issue 4, 00419(2024)
Cobalt–Nickel Vanadate Nanonest Colonies Deposited Carbon Fabric as a Bifunctional Electrode for Li-Ion Batteries and Oxygen-Evolution Reactions
Transition metal vanadates (TMVs) have attracted significant attention in various research fields owing to their advantageous features. Furthermore, synthesizing TMVs directly on current collectors at the nanoscale is a promising strategy for achieving better performance. Herein, cobalt–nickel vanadate (CoV2O6–Ni2V2O7, CNV) was directly grown on carbon fabric using a facile one-step hydrothermal method. In particular, the CNV sample prepared for 3 h (CNV-3) exhibited a benefit-enriched nanonest-colony morphology in which abundant nanowires (diameter: 10 nm) were intertwined, providing sufficient space for electrolyte diffusion. All the CNV electrodes exhibited good cycling performance in the lithium-ion battery study. Especially, the CNV-3 electrode retained higher discharge and charge capacities of 616 and 610 mAh g-1, respectively at the 100th cycle than the other two electrodes owing to several morphologic features. The electrocatalytic activity of all the CNV samples for the oxygen-evolution reaction (OER) was also explored in an alkaline electrolyte. Among these CNV catalysts, the CNV-3 displayed excellent OER performance and required an overpotential of only 270 mV to drive a current density of 10 mA cm-2. The Tafel slope of this catalyst was also found to be low (129 mV dec-1). Moreover, the catalyst exhibited excellent durability in a 24 h stability test. These results indicate that the metal vanadates with favorable nanostructures are highly suitable for both energy storage and water-splitting applications. CoV2O6–Ni2V2O7 material grown directly on carbon fabric as novel nanonest colonies demonstrated stable electrochemical response in both lithium-ion battery and oxygen-evolution reaction studies
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Sale Chandra Sekhar, Bhimanaboina Ramulu, Shaik Junied Arbaz, Manchi Nagaraju, Jae Su Yu. Cobalt–Nickel Vanadate Nanonest Colonies Deposited Carbon Fabric as a Bifunctional Electrode for Li-Ion Batteries and Oxygen-Evolution Reactions[J]. Advanced Fiber Materials, 2024, 6(4): 00419
Category: Research Articles
Received: Dec. 2, 2023
Accepted: Apr. 6, 2024
Published Online: Nov. 14, 2024
The Author Email: Yu Jae Su (jsyu@khu.ac.kr)