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Integrated battery–capacitor storage system: polyaniline interwoven Co-ZIF-derived hollow NiCo-LDH with enhanced electrochemical properties for hybrid supercapacitors.
- Source :
- New Journal of Chemistry; 9/14/2023, Vol. 47 Issue 34, p16050-16058, 9p
- Publication Year :
- 2023
-
Abstract
- Layered double hydroxides (LDHs) are battery-type supercapacitor electrode materials with application potential due to their abundant active metal sites and surface functional groups. The traditional LDH structure easily aggregates and collapses. In this work, a stable cobalt zeolite imidazole framework (Co-ZIF) was used as the derived template to grow LDH nanosheets in situ to increase the contact area with the electrolyte, and polyaniline (PANI) acted as a conductive bridge to provide a rapid charge transfer pathway. The fabricated NiCo-LDH@PANI hollow structure demonstrated a specific capacity of 1315 C g<superscript>−1</superscript> at 1 A g<superscript>−1</superscript> and achieved a rate capacity of 951 C g<superscript>−1</superscript> at 20 A g<superscript>−1</superscript>. Furthermore, the battery–supercapacitor hybrid device (NiCo-LDH@PANI//AC) exhibited an high energy density of 66.2 W h kg<superscript>−1</superscript> at a power density of 800 W kg<superscript>−1</superscript> with 95.5% capacitance retention after 20 000 cycles. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 11440546
- Volume :
- 47
- Issue :
- 34
- Database :
- Complementary Index
- Journal :
- New Journal of Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 170907398
- Full Text :
- https://doi.org/10.1039/d3nj03070a