Journal
MATERIALS TODAY ENERGY
Volume 30, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.mtener.2022.101182
Keywords
Bimetallic LDH electrode; NiCo-LDH; ZIF-67; Electrodeposition; Pseudomorphic replication; Supercapattery; 3D -on -2D
Funding
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education [NRF-2014R1A6A1030419]
- National Research Foundation of Korea (NRF) - Korean government (MSIT) [2020112382]
- Spanish government [PID2019-109215RB-C41]
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The functionalization of structural nanoengineered battery-type electrodes has facilitated the emergence of the supercapattery (SCp) subclass, enabling a wide range of applications. Our research presents a promising approach to obtaining high-performance battery-type electrodes through the two-step fabrication of nanoengineered 3D-on-2D structures.
The functionalization of structural nanoengineered battery-type electrodes has aided the emergence of supercapattery (SCp) subclass, which enables a wide range of applications. Herein, our research work provides a platform for two-step fabrication of nanoengineered 3D-on-2D structure as a promising approach to obtain high-performance battery-type electrodes. The hierarchical 2D NiCo bimetallic LDH NC(12)40 electrode was fabricated using electrodeposition, while the nanoengineered 3D ZIF-67 on 2D LDH electrode was achieved via pseudomorphic replication techniques. The fabricated 3D-on-2D NC(12) 40-30 electrode reveals a maximum areal capacity of 1044 mC cm-2 at a current density of 4 mA cm-2 in 6 M KOH electrolyte. Furthermore, NC(12)40-30//AC was integrated as a SCp device, achieving a maximum specific capacitance of 63 F/g and maximum specific energy and power of 20.5 W/h/kg and 8522.7 W/kg, respectively, with improved capacitance retention (85%) even after 10,000 cycles. Thus, the assembled SCp coin cell displays 18-LED illumination in four different commercial LED colors, indicating the viability of the battery-type electrode for SCp development. (c) 2022 Elsevier Ltd. All rights reserved.
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