- Title
- Mesoporous Nanohybrids of 2D Ni-Cr-Layered Double Hydroxide Nanosheets Pillared with Polyoxovanadate Anions for High-Performance Hybrid Supercapacitor
- Creator
- Padalkar, Navnath S.; Sadavar, Shrikant V.; Lokhande, Chandrakant D.; Gunjakar, Jayavant L.; Shinde, Rohini B.; Patil, Akash S.; Patil, Umakant M.; Dhawale, Dattatray S.; Pathan, Habib M.; Sartale, Shrikrishna D.; Parale, Vinayak G.; Vinu, Ajayan
- Relation
- Advanced Materials Interfaces Vol. 9, Issue 1, no. 2101216
- Publisher Link
- http://dx.doi.org/10.1002/admi.202101216
- Publisher
- Wiley-VCH Verlag GmbH & Co. KGaA
- Resource Type
- journal article
- Date
- 2021
- Description
- In this study, the use of exfoliation-restacking strategy to prepare mesoporous nanohybrids of 2D Nickel-chromium-layered double hydroxide (Ni-Cr-LDH) nanosheets pillared with polyoxovanadate (POV) anions (Ni-Cr-LDH-POV) for a high-performance hybrid supercapacitor (HSC) is demonstrated. The pillaring approach of Ni-Cr-LDH monolayers with POV anions via exfoliation-restacking strategy yields mesoporous ordered layered structure with a high surface area and interconnected network morphology. The pillared hybridization of Ni-Cr-LDH with POV anions boosts the electrochemical performance of the pristine Ni-Cr-LDH, which is attributed to the development of layer-by-layer stacking structure with expanded gallery height and high surface area interconnected network morphology. The Ni-Cr-LDH-POV nanohybrid electrode exhibits an improved specific capacity of 294.5 mAh g−1 as compared to pristine Ni-Cr-LDH electrode (98.9 mAh g−1) at 1 mA cm−2 with 82% capacity retention after 5000 charge-discharge cycles. A full-cell HSC composed of mesoporous Ni-Cr-LDH-POV nanohybrid as a cathode and reduced graphene oxide (rGO) as an anode delivers a maximum specific energy of 57.78 Wh kg−1 and specific power of 1.59 kW kg−1 with 87% cyclic durability over 10 000 charge-discharge cycles. The present study demonstrates the usefulness of the pillared Ni-Cr-LDH-POV nanohybrids via exfoliation-restacking strategy for exploring high-performance HSC.
- Subject
- 2D Ni-Cr-LDH; exfoliation; hybrid supercapacitors; layered double hydroxide; pillared nanohypbrid; polyoxovanadate
- Identifier
- http://hdl.handle.net/1959.13/1459724
- Identifier
- uon:45757
- Identifier
- ISSN:2196-7350
- Language
- eng
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