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Title
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Fabrication of larger surface area of ZIF8@ZIF67 reverse core-shell nanostructures for energy storage applications
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Author
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Abstract
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| The construction of uniform nanostructure with larger surface area electrodes is a huge challenge for the highvalue added energy storage application. Herein, we demonstrates ZIF67@ZIF8 (core-shell) and ZIF8@ZIF67 (reverse core-shell) nanostructures using a low-cost wet chemical route and used them as supercapacitors. Pristine ZIF-67 and ZIF-8 was used as reference electrodes. Benefiting from the synergistic effect between the ZIF8 and ZIF67, the ZIF8@ZIF67 exhibited the outstanding electrochemical consequences owing to its larger surface area with uniform hexagonal morphology. As optimized ZIF8@ZIF67 nanostructure displayed the highcapacity of 1521 F/g at 1 A/g of current density in a three-electrode assembly in 1 M KOH electrolyte compared with other as-fabricated electrodes. In addition, the ZIF8@ZIF67 nanostructure employed into the symmetric supercapacitors (SSCs) with 1 M KOH electrolyte in two-electrode setup and it exhibited still superior output including capacity (249.8 F/g at 1 A/g), remarkable repeatability (87 % over 10,000 GCD cycles) along with high energy and power density (61.2 Wh/kg & 1260 W/kg). The present study uncovers the relationship between the larger surface area and electrocatalyst performance, supporting an effective approach to prepare favorable materials for enhanced capacity, extended lifespan, and energy density. |
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Language
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English
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Source (journal)
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Electrochimica acta. - London
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Publication
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London
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2024
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ISSN
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0013-4686
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DOI
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10.1016/J.ELECTACTA.2023.143532
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Volume/pages
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475
(2024)
, p. 1-11
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Article Reference
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143532
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ISI
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001134022100001
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Full text (Publisher's DOI)
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Full text (open access)
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Full text (publisher's version - intranet only)
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