Interlayer-Expanded MoS<sub>2</sub> Enabled by Sandwiched Monolayer Carbon for High Performance Potassium Storage
Potassium-ion batteries (PIBs) have aroused a large amount of interest recently due to the plentiful potassium resource, which may show cost benefits over lithium-ion batteries (LIBs). However, the huge volume expansion induced by the intercalation of large-sized potassium ions and the intrinsic slu...
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MDPI AG
2023-03-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/28/6/2608 |
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| author | Yuting Zhang Lin Zhu Hongqiang Xu Qian Wu Haojie Duan Boshi Chen Haiyong He |
| author_facet | Yuting Zhang Lin Zhu Hongqiang Xu Qian Wu Haojie Duan Boshi Chen Haiyong He |
| author_sort | Yuting Zhang |
| collection | DOAJ |
| description | Potassium-ion batteries (PIBs) have aroused a large amount of interest recently due to the plentiful potassium resource, which may show cost benefits over lithium-ion batteries (LIBs). However, the huge volume expansion induced by the intercalation of large-sized potassium ions and the intrinsic sluggish kinetics of the anode hamper the application of PIBs. Herein, by rational design, nano-roses assembled from petals with a MoS<sub>2</sub>/monolayer carbon (C-MoS<sub>2</sub>) sandwiched structure were successfully synthesized. The interlayer distance of ultrathin C-MoS<sub>2</sub> was expanded from original MoS<sub>2</sub> of 6.2 to 9.6 Å due to the formation of the MoS<sub>2</sub>-carbon inter overlapped superstructure. This unique structure efficiently alleviates the mechanical strain, prevents the aggregation of MoS<sub>2</sub>, creates more active sites, facilitates electron transport, and enhances the specific capacity and K<sup>+</sup> diffusion kinetics. As a result, the prepared C-MoS<sub>2</sub>-1 anode delivers a high reversible specific capacity (437 mAh g<sup>−1</sup> at 0.1 A g<sup>−1</sup>) and satisfying rate performance (123 mAh g<sup>−1</sup> at 6.4 A g<sup>−1</sup>). Therefore, this work provides new insights into the design of high-performance anode materials of PIBs. |
| first_indexed | 2024-03-11T06:07:54Z |
| format | Article |
| id | doaj.art-f97dafaacd3843618c3a4d45a8c3cc7d |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-11T06:07:54Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-f97dafaacd3843618c3a4d45a8c3cc7d2023-11-17T12:52:42ZengMDPI AGMolecules1420-30492023-03-01286260810.3390/molecules28062608Interlayer-Expanded MoS<sub>2</sub> Enabled by Sandwiched Monolayer Carbon for High Performance Potassium StorageYuting Zhang0Lin Zhu1Hongqiang Xu2Qian Wu3Haojie Duan4Boshi Chen5Haiyong He6Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, ChinaNingbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, ChinaNingbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, ChinaNingbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, ChinaNingbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, ChinaNingbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, ChinaNingbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, ChinaPotassium-ion batteries (PIBs) have aroused a large amount of interest recently due to the plentiful potassium resource, which may show cost benefits over lithium-ion batteries (LIBs). However, the huge volume expansion induced by the intercalation of large-sized potassium ions and the intrinsic sluggish kinetics of the anode hamper the application of PIBs. Herein, by rational design, nano-roses assembled from petals with a MoS<sub>2</sub>/monolayer carbon (C-MoS<sub>2</sub>) sandwiched structure were successfully synthesized. The interlayer distance of ultrathin C-MoS<sub>2</sub> was expanded from original MoS<sub>2</sub> of 6.2 to 9.6 Å due to the formation of the MoS<sub>2</sub>-carbon inter overlapped superstructure. This unique structure efficiently alleviates the mechanical strain, prevents the aggregation of MoS<sub>2</sub>, creates more active sites, facilitates electron transport, and enhances the specific capacity and K<sup>+</sup> diffusion kinetics. As a result, the prepared C-MoS<sub>2</sub>-1 anode delivers a high reversible specific capacity (437 mAh g<sup>−1</sup> at 0.1 A g<sup>−1</sup>) and satisfying rate performance (123 mAh g<sup>−1</sup> at 6.4 A g<sup>−1</sup>). Therefore, this work provides new insights into the design of high-performance anode materials of PIBs.https://www.mdpi.com/1420-3049/28/6/2608potassium-ion batteriesanodelayered 2D materialstransition-metal dichalcogenidesMoS<sub>2</sub> |
| spellingShingle | Yuting Zhang Lin Zhu Hongqiang Xu Qian Wu Haojie Duan Boshi Chen Haiyong He Interlayer-Expanded MoS<sub>2</sub> Enabled by Sandwiched Monolayer Carbon for High Performance Potassium Storage Molecules potassium-ion batteries anode layered 2D materials transition-metal dichalcogenides MoS<sub>2</sub> |
| title | Interlayer-Expanded MoS<sub>2</sub> Enabled by Sandwiched Monolayer Carbon for High Performance Potassium Storage |
| title_full | Interlayer-Expanded MoS<sub>2</sub> Enabled by Sandwiched Monolayer Carbon for High Performance Potassium Storage |
| title_fullStr | Interlayer-Expanded MoS<sub>2</sub> Enabled by Sandwiched Monolayer Carbon for High Performance Potassium Storage |
| title_full_unstemmed | Interlayer-Expanded MoS<sub>2</sub> Enabled by Sandwiched Monolayer Carbon for High Performance Potassium Storage |
| title_short | Interlayer-Expanded MoS<sub>2</sub> Enabled by Sandwiched Monolayer Carbon for High Performance Potassium Storage |
| title_sort | interlayer expanded mos sub 2 sub enabled by sandwiched monolayer carbon for high performance potassium storage |
| topic | potassium-ion batteries anode layered 2D materials transition-metal dichalcogenides MoS<sub>2</sub> |
| url | https://www.mdpi.com/1420-3049/28/6/2608 |
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