Zn-BTC MOF as Self-Template to Hierarchical ZnS/NiS 2 Heterostructure with Improved Electrochemical Performance for Hybrid Supercapacitor.
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| Title: | Zn-BTC MOF as Self-Template to Hierarchical ZnS/NiS 2 Heterostructure with Improved Electrochemical Performance for Hybrid Supercapacitor. |
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| Authors: | Li, Xuan1 (AUTHOR) 2211905029@stmail.ujs.edu.cn, Liu, Lingran1 (AUTHOR) 2222105022@stmail.ujs.edu.cn, Tu, Chengyu1 (AUTHOR) 2221905054@stmail.ujs.edu.cn, Zhang, Quan2,3 (AUTHOR) xc.yang@siat.ac.cn, Yang, Xinchun3 (AUTHOR), Kolokolov, Daniil I.4 (AUTHOR) kdi@catalysis.ru, Maltanava, Hanna5 (AUTHOR) maltanava@bsu.by, Belko, Nikita5 (AUTHOR) belkonv@bsu.by, Poznyak, Sergey5 (AUTHOR) poznyak@bsu.by, Samtsov, Michael5 (AUTHOR) samtsov@bsu.by, Guo, Haixin6 (AUTHOR) haixin_g@126.com, Wu, Shuping1 (AUTHOR) shupingwu@ujs.edu.cn, Zhu, Maiyong1 (AUTHOR) zhangquan@dhu.edu.cn |
| Source: | Nanomaterials (2079-4991). Jan2024, Vol. 14 Issue 1, p22. 14p. |
| Subjects: | Supercapacitor performance, Negative electrode, Nickel sulfide, Energy density, Metal sulfides, Zinc sulfide |
| Abstract: | Zn-BTC (H3BTC refers to 1, 3, 5-benzoic acid) MOF was used as a self-template and a zinc source to prepare ZnS/NiS2 with a layered heterogeneous structure as a promising electrode material using cation exchange and solid-phase vulcanization processes. The synergistic effect of the two metal sulfides enhances the application of ZnS/NiS2. And the high specific surface area and abundant active sites further promote the mass/charge transfer and redox reaction kinetics. In the three-electrode system, the specific capacitance was as high as 1547 F/g at a current density of 1 A/g, along with satisfactory rate capability (1214 F/g at 6 A/g) and cycling performance. Coupled with activated carbon (AC), the prepared hybrid device (ZnS/NiS2 as the positive electrode and AC as the negative electrode) (ZnS/NiS2/AC) can be operated under a potential window of 1.6 V and provides a high energy density of 26.3 Wh/kg at a power density of 794 W/kg. Notably, the assembled ZnS/NiS2//AC showed little capacity degradation after 5000 charge/discharge cycles. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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| Abstract: | Zn-BTC (H3BTC refers to 1, 3, 5-benzoic acid) MOF was used as a self-template and a zinc source to prepare ZnS/NiS2 with a layered heterogeneous structure as a promising electrode material using cation exchange and solid-phase vulcanization processes. The synergistic effect of the two metal sulfides enhances the application of ZnS/NiS2. And the high specific surface area and abundant active sites further promote the mass/charge transfer and redox reaction kinetics. In the three-electrode system, the specific capacitance was as high as 1547 F/g at a current density of 1 A/g, along with satisfactory rate capability (1214 F/g at 6 A/g) and cycling performance. Coupled with activated carbon (AC), the prepared hybrid device (ZnS/NiS2 as the positive electrode and AC as the negative electrode) (ZnS/NiS2/AC) can be operated under a potential window of 1.6 V and provides a high energy density of 26.3 Wh/kg at a power density of 794 W/kg. Notably, the assembled ZnS/NiS2//AC showed little capacity degradation after 5000 charge/discharge cycles. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 20794991 |
| DOI: | 10.3390/nano14010022 |
