High mass-loading of nickel-cobalt layered double hydroxide on 3D-printed electrode for cathode of asymmetric supercapacitor
- Authors
- Doan, Thang Cao; Muthukutty, Balamurugan; Yoo, Hyojong
- Issue Date
- Sep-2023
- Publisher
- Elsevier BV
- Keywords
- Asymmetric supercapacitor; 3D printed electrode; NiCo-LDH; Surface modification; 3D printing FDM technique
- Citation
- Journal of Energy Storage, v.68, pp.1 - 9
- Indexed
- SCIE
SCOPUS
- Journal Title
- Journal of Energy Storage
- Volume
- 68
- Start Page
- 1
- End Page
- 9
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/187479
- DOI
- 10.1016/j.est.2023.107648
- ISSN
- 2352-152X
- Abstract
- To achieve high-performance supercapacitors, the fabrication of electrodes with a high mass loading of active species without sluggish ion diffusion is a key process. Herein, we report nickel-cobalt layered double hydroxide (NiCo-LDH) electrodeposited on 3D-printed electrodes (3D-PEs) prepared via 3D printing fused deposition modeling (FDM) technique after the surface modification of 3D PEs to achieve high loading mass cathode electrode (NiCo-LDH@3D-PEs) for asymmetric supercapacitor. As fabricated 1.6 mm-thick NiCo-LDH@3D-PE exhibits high mass loading (15.3 mg cm-2) with a capacitance of 25.9 F cm-2 (1690 F g-1) at 10 mA cm-2 current density. These improved activities are mainly due to the intrinsic properties of multilayered 3D-PEs which increase the number of ion-accessible sites and shorten the ion diffusion because of multiple orthogonal layers. Furthermore, an asymmetric supercapacitor was also examined with acid-treated carbon cloth (ATCC) as a negative and NiCo-LDH@3D-PE as a positive electrode. As we expected, the NiCo-LDH@3D-PE// ATCC device resulted in high energy density (1.26 mWh cm-2) and power density (4.74 mW cm-2). In addition, 93 % of its initial capacitance was observed after 10,000 cycles respectively. The outstanding performance of NiCo-LDH@3D-PEs authorizing the 3D printing FDM technique efficiently supports high mass-loading cathodes for asymmetric supercapacitors.
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