PPy-Coated Mo<sub>3</sub>S<sub>4</sub>/CoMo<sub>2</sub>S<sub>4</sub> Nanotube-like Heterostructure for High-Performance Lithium Storage
Heterostructured materials show great potential to enhance the specific capacity, rate performance and cycling lifespan of lithium-ion batteries owing to their unique interfaces, robust architectures, and synergistic effects. Herein, a polypyrrole (PPy)-coated nanotube-like Mo<sub>3</sub>...
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| Format: | Article |
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MDPI AG
2023-12-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/29/1/234 |
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| author | Fei Tang Wei Jiang Jingjing Xie Deyang Zhao Yanfeng Meng Zhenglong Yang Zhiqiang Lv Yanbin Xu Wenjuan Sun Ziqiao Jiang |
| author_facet | Fei Tang Wei Jiang Jingjing Xie Deyang Zhao Yanfeng Meng Zhenglong Yang Zhiqiang Lv Yanbin Xu Wenjuan Sun Ziqiao Jiang |
| author_sort | Fei Tang |
| collection | DOAJ |
| description | Heterostructured materials show great potential to enhance the specific capacity, rate performance and cycling lifespan of lithium-ion batteries owing to their unique interfaces, robust architectures, and synergistic effects. Herein, a polypyrrole (PPy)-coated nanotube-like Mo<sub>3</sub>S<sub>4</sub>/CoMo<sub>2</sub>S<sub>4</sub> heterostructure is prepared by the hydrothermal and subsequent in situ polymerization methods. The well-designed nanotube-like structure is beneficial to relieve the serious volume changes and facilitate the infiltration of electrolytes during the charge/discharge process. The Mo<sub>3</sub>S<sub>4</sub>/CoMo<sub>2</sub>S<sub>4</sub> heterostructure could effectively enhance the electrical conductivity and Li<sup>+</sup> transport kinetics owing to the refined energy band structure and the internal electric field at the heterostructure interface. Moreover, the conductive PPy-coated layer could inhibit the obvious volume expansion like a firm armor and further avoid the pulverization of the active material and aggregation of generated products. Benefiting from the synergistic effects of the well-designed heterostructure and PPy-coated nanotube-like architecture, the prepared Mo<sub>3</sub>S<sub>4</sub>/CoMo<sub>2</sub>S<sub>4</sub> heterostructure delivers high reversible capacity (1251.3 mAh g<sup>−1</sup> at 300 mA g<sup>−1</sup>), superior rate performance (340.3 mAh g<sup>−1</sup> at 5.0 A g<sup>−1</sup>) and excellent cycling lifespan (744.1 mAh g<sup>−1</sup> after 600 cycles at a current density of 2.0 A g<sup>−1</sup>). Such a design concept provides a promising strategy towards heterostructure materials to enhance their lithium storage performances and boost their practical applications. |
| first_indexed | 2024-03-08T15:01:08Z |
| format | Article |
| id | doaj.art-2b4a1ba91aea4a578e78385d1b1406ae |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-08T15:01:08Z |
| publishDate | 2023-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-2b4a1ba91aea4a578e78385d1b1406ae2024-01-10T15:04:35ZengMDPI AGMolecules1420-30492023-12-0129123410.3390/molecules29010234PPy-Coated Mo<sub>3</sub>S<sub>4</sub>/CoMo<sub>2</sub>S<sub>4</sub> Nanotube-like Heterostructure for High-Performance Lithium StorageFei Tang0Wei Jiang1Jingjing Xie2Deyang Zhao3Yanfeng Meng4Zhenglong Yang5Zhiqiang Lv6Yanbin Xu7Wenjuan Sun8Ziqiao Jiang9School of Chemistry and Materials Science, Ludong University, Yantai 264025, ChinaSchool of Chemistry and Materials Science, Ludong University, Yantai 264025, ChinaSchool of Chemistry and Materials Science, Ludong University, Yantai 264025, ChinaSchool of Chemistry and Materials Science, Ludong University, Yantai 264025, ChinaSchool of Chemistry and Materials Science, Ludong University, Yantai 264025, ChinaSchool of Chemistry and Materials Science, Ludong University, Yantai 264025, ChinaSchool of Chemistry and Materials Science, Ludong University, Yantai 264025, ChinaSchool of Chemistry and Materials Science, Ludong University, Yantai 264025, ChinaSchool of Chemistry and Materials Science, Ludong University, Yantai 264025, ChinaSchool of Chemistry and Materials Science, Ludong University, Yantai 264025, ChinaHeterostructured materials show great potential to enhance the specific capacity, rate performance and cycling lifespan of lithium-ion batteries owing to their unique interfaces, robust architectures, and synergistic effects. Herein, a polypyrrole (PPy)-coated nanotube-like Mo<sub>3</sub>S<sub>4</sub>/CoMo<sub>2</sub>S<sub>4</sub> heterostructure is prepared by the hydrothermal and subsequent in situ polymerization methods. The well-designed nanotube-like structure is beneficial to relieve the serious volume changes and facilitate the infiltration of electrolytes during the charge/discharge process. The Mo<sub>3</sub>S<sub>4</sub>/CoMo<sub>2</sub>S<sub>4</sub> heterostructure could effectively enhance the electrical conductivity and Li<sup>+</sup> transport kinetics owing to the refined energy band structure and the internal electric field at the heterostructure interface. Moreover, the conductive PPy-coated layer could inhibit the obvious volume expansion like a firm armor and further avoid the pulverization of the active material and aggregation of generated products. Benefiting from the synergistic effects of the well-designed heterostructure and PPy-coated nanotube-like architecture, the prepared Mo<sub>3</sub>S<sub>4</sub>/CoMo<sub>2</sub>S<sub>4</sub> heterostructure delivers high reversible capacity (1251.3 mAh g<sup>−1</sup> at 300 mA g<sup>−1</sup>), superior rate performance (340.3 mAh g<sup>−1</sup> at 5.0 A g<sup>−1</sup>) and excellent cycling lifespan (744.1 mAh g<sup>−1</sup> after 600 cycles at a current density of 2.0 A g<sup>−1</sup>). Such a design concept provides a promising strategy towards heterostructure materials to enhance their lithium storage performances and boost their practical applications.https://www.mdpi.com/1420-3049/29/1/234lithium-ion batteriesheterostructurenanostructure designMo<sub>3</sub>S<sub>4</sub>CoMo<sub>2</sub>S<sub>4</sub> |
| spellingShingle | Fei Tang Wei Jiang Jingjing Xie Deyang Zhao Yanfeng Meng Zhenglong Yang Zhiqiang Lv Yanbin Xu Wenjuan Sun Ziqiao Jiang PPy-Coated Mo<sub>3</sub>S<sub>4</sub>/CoMo<sub>2</sub>S<sub>4</sub> Nanotube-like Heterostructure for High-Performance Lithium Storage Molecules lithium-ion batteries heterostructure nanostructure design Mo<sub>3</sub>S<sub>4</sub> CoMo<sub>2</sub>S<sub>4</sub> |
| title | PPy-Coated Mo<sub>3</sub>S<sub>4</sub>/CoMo<sub>2</sub>S<sub>4</sub> Nanotube-like Heterostructure for High-Performance Lithium Storage |
| title_full | PPy-Coated Mo<sub>3</sub>S<sub>4</sub>/CoMo<sub>2</sub>S<sub>4</sub> Nanotube-like Heterostructure for High-Performance Lithium Storage |
| title_fullStr | PPy-Coated Mo<sub>3</sub>S<sub>4</sub>/CoMo<sub>2</sub>S<sub>4</sub> Nanotube-like Heterostructure for High-Performance Lithium Storage |
| title_full_unstemmed | PPy-Coated Mo<sub>3</sub>S<sub>4</sub>/CoMo<sub>2</sub>S<sub>4</sub> Nanotube-like Heterostructure for High-Performance Lithium Storage |
| title_short | PPy-Coated Mo<sub>3</sub>S<sub>4</sub>/CoMo<sub>2</sub>S<sub>4</sub> Nanotube-like Heterostructure for High-Performance Lithium Storage |
| title_sort | ppy coated mo sub 3 sub s sub 4 sub como sub 2 sub s sub 4 sub nanotube like heterostructure for high performance lithium storage |
| topic | lithium-ion batteries heterostructure nanostructure design Mo<sub>3</sub>S<sub>4</sub> CoMo<sub>2</sub>S<sub>4</sub> |
| url | https://www.mdpi.com/1420-3049/29/1/234 |
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