Green fabrication of nickel-iron layered double hydroxides nanosheets efficient for the enhanced capacitive performance
Rational synthesis of robust layered double hydroxides (LDHs) nanosheets for high-energy supercapacitors is full of challenges. Herein, we reported an ultrasonication-assisted strategy to eco-friendly fabricate NiFe-LDHs nanosheets for the enhanced capacitive behavior. The experimental results combi...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2022-10-01
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| Series: | Green Energy & Environment |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2468025721000194 |
| _version_ | 1811288319459328000 |
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| author | Yuchen Wang Zuo Chen Man Zhang Yaoyu Liu Huixia Luo Kai Yan |
| author_facet | Yuchen Wang Zuo Chen Man Zhang Yaoyu Liu Huixia Luo Kai Yan |
| author_sort | Yuchen Wang |
| collection | DOAJ |
| description | Rational synthesis of robust layered double hydroxides (LDHs) nanosheets for high-energy supercapacitors is full of challenges. Herein, we reported an ultrasonication-assisted strategy to eco-friendly fabricate NiFe-LDHs nanosheets for the enhanced capacitive behavior. The experimental results combined with different advanced characterization tools document that the utilization of ultrasonication has a profound effect on the morphology and thickness of the as-obtained NiFe-LDHs, alternatively affecting the capacitive behavior. It shows that NiFe-LDHs nanosheets prepared with 2-h ultrasonic treatments display the exceptional capacitive performance because of the synergetic effect of ultrathin thickness, large specific surface area, and high mesoporous volume. The maximum specific capacitance of Ni3Fe1-LDHs nanosheets with the thickness of 7.39 nm and the specific surface area of 77.16 m2 g−1 reached 1923 F g−1, which is competitive with most previously reported values. In addition, the maximum specific energy of the assembled NiFe-LDHs//AC asymmetric supercapacitor achieved 49.13 Wh kg−1 at 400 W kg−1. This work provides a green technology to fabricate LDHs nanosheets, and offers deep insights for understanding the relationship between the morphology/structure and capacitive behavior of LDHs nanosheets, which is helpful for achieving high-performance LDHs-based electrode materials. |
| first_indexed | 2024-04-13T03:34:16Z |
| format | Article |
| id | doaj.art-e23a947167c34f4da2895fa024bf5ae1 |
| institution | Directory Open Access Journal |
| issn | 2468-0257 |
| language | English |
| last_indexed | 2024-04-13T03:34:16Z |
| publishDate | 2022-10-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Green Energy & Environment |
| spelling | doaj.art-e23a947167c34f4da2895fa024bf5ae12022-12-22T03:04:22ZengKeAi Communications Co., Ltd.Green Energy & Environment2468-02572022-10-017510531061Green fabrication of nickel-iron layered double hydroxides nanosheets efficient for the enhanced capacitive performanceYuchen Wang0Zuo Chen1Man Zhang2Yaoyu Liu3Huixia Luo4Kai Yan5School of Environmental Science and Engineering, Sun Yat-sen University, 135 Xingang Xi Road, Guangzhou, 510275, ChinaSchool of Environmental Science and Engineering, Sun Yat-sen University, 135 Xingang Xi Road, Guangzhou, 510275, ChinaSchool of Environmental Science and Engineering, Sun Yat-sen University, 135 Xingang Xi Road, Guangzhou, 510275, ChinaSchool of Environmental Science and Engineering, Sun Yat-sen University, 135 Xingang Xi Road, Guangzhou, 510275, ChinaKey Lab of Polymer Composite & Functional Materials, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China; Corresponding authors.School of Environmental Science and Engineering, Sun Yat-sen University, 135 Xingang Xi Road, Guangzhou, 510275, China; Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou, 510275, China; Corresponding authors.Rational synthesis of robust layered double hydroxides (LDHs) nanosheets for high-energy supercapacitors is full of challenges. Herein, we reported an ultrasonication-assisted strategy to eco-friendly fabricate NiFe-LDHs nanosheets for the enhanced capacitive behavior. The experimental results combined with different advanced characterization tools document that the utilization of ultrasonication has a profound effect on the morphology and thickness of the as-obtained NiFe-LDHs, alternatively affecting the capacitive behavior. It shows that NiFe-LDHs nanosheets prepared with 2-h ultrasonic treatments display the exceptional capacitive performance because of the synergetic effect of ultrathin thickness, large specific surface area, and high mesoporous volume. The maximum specific capacitance of Ni3Fe1-LDHs nanosheets with the thickness of 7.39 nm and the specific surface area of 77.16 m2 g−1 reached 1923 F g−1, which is competitive with most previously reported values. In addition, the maximum specific energy of the assembled NiFe-LDHs//AC asymmetric supercapacitor achieved 49.13 Wh kg−1 at 400 W kg−1. This work provides a green technology to fabricate LDHs nanosheets, and offers deep insights for understanding the relationship between the morphology/structure and capacitive behavior of LDHs nanosheets, which is helpful for achieving high-performance LDHs-based electrode materials.http://www.sciencedirect.com/science/article/pii/S2468025721000194UltrasonicationLayered double hydroxidesNanosheetsSupercapacitor |
| spellingShingle | Yuchen Wang Zuo Chen Man Zhang Yaoyu Liu Huixia Luo Kai Yan Green fabrication of nickel-iron layered double hydroxides nanosheets efficient for the enhanced capacitive performance Green Energy & Environment Ultrasonication Layered double hydroxides Nanosheets Supercapacitor |
| title | Green fabrication of nickel-iron layered double hydroxides nanosheets efficient for the enhanced capacitive performance |
| title_full | Green fabrication of nickel-iron layered double hydroxides nanosheets efficient for the enhanced capacitive performance |
| title_fullStr | Green fabrication of nickel-iron layered double hydroxides nanosheets efficient for the enhanced capacitive performance |
| title_full_unstemmed | Green fabrication of nickel-iron layered double hydroxides nanosheets efficient for the enhanced capacitive performance |
| title_short | Green fabrication of nickel-iron layered double hydroxides nanosheets efficient for the enhanced capacitive performance |
| title_sort | green fabrication of nickel iron layered double hydroxides nanosheets efficient for the enhanced capacitive performance |
| topic | Ultrasonication Layered double hydroxides Nanosheets Supercapacitor |
| url | http://www.sciencedirect.com/science/article/pii/S2468025721000194 |
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