Sukanya, Ramaraj and Karthik, Raj and Hasan, Mahmudul and Breslin, Carmel B. and Shim, Jae-Jin
(2023)
Insight into the synergistic effect of 2D/2D layered metal selenides wrapped nickel boride nanoparticles based ternary heterostructure for constructing asymmetric supercapacitors with excellent energy density.
Chemical Engineering Journal, 473.
p. 145487.
ISSN 13858947
Abstract
Tuning the structural and electronic properties of layered metal selenides is a highly feasible approach for
developing high-performance asymmetric supercapacitors (ASCs). In this work, a ternary heterostructure of
yttrium diselenide/molybdenum diselenide (YSe2/MoSe2) with amorphous nickel boride nanoparticles (NixB
NPs) was prepared by a simple hydrothermal method followed by a liquid phase route. Interestingly, this ternary
heterostructure consists of multiple layers of YSe2/MoSe2 nanosheets uniformly wrapped by NixB NPs over the
entire surface. The characterization results by X-ray diffraction, Raman, and X-ray photoelectron spectroscopy
showed that the strong synergism between YSe2/MoSe2 and NixB NPs indicates an obvious electron transfer from
NixB to the YSe2/MoSe2 hybrid, which contributes to the enhancement of the electrical conductivity of the
electrode. Due to its exclusive heterostructure network, the single YSe2/MoSe2/NixB electrode achieved a specific
capacitance of 893.3 F/g at 1 A/g and a capacity retention of 128.17% over 5000 cycles. In addition, the
asymmetric YSe2/MoSe2/NixB||rGO device with a working potential of 1.6 V showed an impressive energy
density of 39.5 Wh kg− 1 with a power density of 800 W kg− 1 and excellent cycling stability with 85.60% capacity
retention after 5000 cycles in aqueous electrolyte. This result of the designed ASC device encourages the
development of a new platform for the design of electrode materials based on metal selenides and metal borides
| Item Type: |
Article
|
| Keywords: |
Metal selenides;
Nickel boride;
Heterostructure;
ASC device;
Energy density; |
| Academic Unit: |
Faculty of Science and Engineering > Chemistry |
| Item ID: |
17547 |
| Identification Number: |
https://doi.org/10.1016/j.cej.2023.145487 |
| Depositing User: |
Dr. Carmel Breslin
|
| Date Deposited: |
15 Sep 2023 13:49 |
| Journal or Publication Title: |
Chemical Engineering Journal |
| Publisher: |
Elsevier |
| Refereed: |
Yes |
| URI: |
|
| Use Licence: |
This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available
here |
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