MOF-derived cobalt nanoparticles in silicon suboxide-based anodes for enhanced lithium storage
The ultra-high theoretical capacity of silicon-based (Si) materials makes them promising anode materials for high energy density lithium-ion batteries. Unfortunately, the dramatic volume change (∼300%) and low electrical conductivity of silicon have severely hindered the commercial use of silicon an...
| Main Authors: | , , , , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2024
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| Online Access: | https://hdl.handle.net/10356/180230 |
| _version_ | 1826122179863904256 |
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| author | Chen, Yueying Huang, Mianying Deng, Guangfa Wu, Chunlei Zhong, Hao Zeb, Akif Lin, Xiaoming Wu, Yongbo Wu, Zhenyu Xu, Zhiguang Cai, Yuepeng |
| author2 | School of Materials Science and Engineering |
| author_facet | School of Materials Science and Engineering Chen, Yueying Huang, Mianying Deng, Guangfa Wu, Chunlei Zhong, Hao Zeb, Akif Lin, Xiaoming Wu, Yongbo Wu, Zhenyu Xu, Zhiguang Cai, Yuepeng |
| author_sort | Chen, Yueying |
| collection | NTU |
| description | The ultra-high theoretical capacity of silicon-based (Si) materials makes them promising anode materials for high energy density lithium-ion batteries. Unfortunately, the dramatic volume change (∼300%) and low electrical conductivity of silicon have severely hindered the commercial use of silicon anodes. Silicon suboxide (SiOx) is one of the ideal candidates for high energy density batteries due to its reduced swelling and lower cost as compared to silicon. However, it remains a huge challenge to address the low conductivity, low (initial) coulombic efficiency and apparent volume effects of SiOx. In this paper, SiOx/Co@C composite anode materials loaded with metal Co nanoparticles were uniformly and efficiently prepared by using 3-aminopropyl triethoxysilane (APTES) as silicon source and Co-MOF as Co source via molecular self-assembly strategy. The experimental results and density functional theory (DFT) calculation showed that the catalytic action of embedded Co nanoparticles had activated the silico-oxygen bond of SiOx and the irreversible product Li2O, thereby improving the initial coulombic efficiency (ICE) and enhancing the reversible capacity. At the same time, the metal Co with mechanical rigidity and electrical conductivity alleviated the volume fluctuation during alloying and improved the charge transfer capacity and ion transport rate of the composite. When compared with SiOx@C anodes, SiOx/Co@C-600 composites showed higher initial CE, superior cyclic stability and good rate performance. In particular, the successful matching of the anode with the lithium iron phosphate (LFP) cathode in full cell systems validated the possibility of its practical application. This work provides important insights into the application of Si-based materials in lithium-ion battery electrode materials and the development of high energy density batteries. |
| first_indexed | 2024-10-01T05:44:16Z |
| format | Journal Article |
| id | ntu-10356/180230 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:44:16Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1802302024-09-25T01:33:52Z MOF-derived cobalt nanoparticles in silicon suboxide-based anodes for enhanced lithium storage Chen, Yueying Huang, Mianying Deng, Guangfa Wu, Chunlei Zhong, Hao Zeb, Akif Lin, Xiaoming Wu, Yongbo Wu, Zhenyu Xu, Zhiguang Cai, Yuepeng School of Materials Science and Engineering Max Planck – NTU Joint Lab for Artificial Senses Innovative Center for Flexible Devices Engineering Metal–organic frameworks Co nanoparticles The ultra-high theoretical capacity of silicon-based (Si) materials makes them promising anode materials for high energy density lithium-ion batteries. Unfortunately, the dramatic volume change (∼300%) and low electrical conductivity of silicon have severely hindered the commercial use of silicon anodes. Silicon suboxide (SiOx) is one of the ideal candidates for high energy density batteries due to its reduced swelling and lower cost as compared to silicon. However, it remains a huge challenge to address the low conductivity, low (initial) coulombic efficiency and apparent volume effects of SiOx. In this paper, SiOx/Co@C composite anode materials loaded with metal Co nanoparticles were uniformly and efficiently prepared by using 3-aminopropyl triethoxysilane (APTES) as silicon source and Co-MOF as Co source via molecular self-assembly strategy. The experimental results and density functional theory (DFT) calculation showed that the catalytic action of embedded Co nanoparticles had activated the silico-oxygen bond of SiOx and the irreversible product Li2O, thereby improving the initial coulombic efficiency (ICE) and enhancing the reversible capacity. At the same time, the metal Co with mechanical rigidity and electrical conductivity alleviated the volume fluctuation during alloying and improved the charge transfer capacity and ion transport rate of the composite. When compared with SiOx@C anodes, SiOx/Co@C-600 composites showed higher initial CE, superior cyclic stability and good rate performance. In particular, the successful matching of the anode with the lithium iron phosphate (LFP) cathode in full cell systems validated the possibility of its practical application. This work provides important insights into the application of Si-based materials in lithium-ion battery electrode materials and the development of high energy density batteries. We gratefully acknowledge the financial support from the Research and Development Plan Project in Key Fields of Guangdong Province (2020B0101030005), and the Basic and Applied Basic Research Fund of Guangdong Province (2019B1515120027). 2024-09-25T01:33:51Z 2024-09-25T01:33:51Z 2024 Journal Article Chen, Y., Huang, M., Deng, G., Wu, C., Zhong, H., Zeb, A., Lin, X., Wu, Y., Wu, Z., Xu, Z. & Cai, Y. (2024). MOF-derived cobalt nanoparticles in silicon suboxide-based anodes for enhanced lithium storage. Chemical Engineering Journal, 486, 150111-. https://dx.doi.org/10.1016/j.cej.2024.150111 1385-8947 https://hdl.handle.net/10356/180230 10.1016/j.cej.2024.150111 2-s2.0-85186960929 486 150111 en Chemical Engineering Journal © 2024 Elsevier B.V. All rights reserved. |
| spellingShingle | Engineering Metal–organic frameworks Co nanoparticles Chen, Yueying Huang, Mianying Deng, Guangfa Wu, Chunlei Zhong, Hao Zeb, Akif Lin, Xiaoming Wu, Yongbo Wu, Zhenyu Xu, Zhiguang Cai, Yuepeng MOF-derived cobalt nanoparticles in silicon suboxide-based anodes for enhanced lithium storage |
| title | MOF-derived cobalt nanoparticles in silicon suboxide-based anodes for enhanced lithium storage |
| title_full | MOF-derived cobalt nanoparticles in silicon suboxide-based anodes for enhanced lithium storage |
| title_fullStr | MOF-derived cobalt nanoparticles in silicon suboxide-based anodes for enhanced lithium storage |
| title_full_unstemmed | MOF-derived cobalt nanoparticles in silicon suboxide-based anodes for enhanced lithium storage |
| title_short | MOF-derived cobalt nanoparticles in silicon suboxide-based anodes for enhanced lithium storage |
| title_sort | mof derived cobalt nanoparticles in silicon suboxide based anodes for enhanced lithium storage |
| topic | Engineering Metal–organic frameworks Co nanoparticles |
| url | https://hdl.handle.net/10356/180230 |
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