High-performance, flexible, binder-free silicon–carbon anode for lithium storage applications
The development of flexible Li-ion batteries (LiBs) is important for applications in wearable devices, display systems, intelligent communication, and other electronics fields. Herein, we report a flexible, binder-free, silicon@silica@carbon nanofiber (Si@SiO2@CNF) anode fabricated by a scalable ele...
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2022-04-01
|
| Series: | Electrochemistry Communications |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1388248122000595 |
| _version_ | 1819061190371835904 |
|---|---|
| author | Xiaohua Li Xinxin Wang Jianjiang Li Gang Liu Dongchen Jia Zhaoli Ma Lei Zhang Zhi Peng Xiaoyi Zhu |
| author_facet | Xiaohua Li Xinxin Wang Jianjiang Li Gang Liu Dongchen Jia Zhaoli Ma Lei Zhang Zhi Peng Xiaoyi Zhu |
| author_sort | Xiaohua Li |
| collection | DOAJ |
| description | The development of flexible Li-ion batteries (LiBs) is important for applications in wearable devices, display systems, intelligent communication, and other electronics fields. Herein, we report a flexible, binder-free, silicon@silica@carbon nanofiber (Si@SiO2@CNF) anode fabricated by a scalable electrospinning method and a novel “pre-oxidation–slicing–carbonization” process. Si nanoparticles (Si NPs) uniformly dispersed within the CNFs were coated with layers of SiO2, leading to the formation of core–shell-structured silicon@silica (Si@SiO2). Due to the introduction of the SiO2 coating, aggregation of the Si NPs was effectively inhibited, and the change in volume of the Si NPs could be confined within the CNFs during cycling, resulting in enhanced structural and cycling stability. Furthermore, the interconnected conductive CNFs further increased the overall conductivity, leading to improved rate performance. More importantly, the novel “pre-oxidation–slicing–carbonization” process ensures the integrity of the edge of the electrode film. The fiber film obtained by electrospinning can be used directly as a freestanding, binder-free anode material, which significantly simplifies the fabrication process and reduces the cost. The Si@SiO2@CNF composite retains excellent performance of 903.7 mAh g−1 beyond 100 cycles at 100 mA g−1, and a remarkable rate capacity of 634.6 mAh g−1 after 300 cycles. The proposed facile and scalable synthesis means that this novel, flexible, and binder-free Si/C anode should have practical applications in next-generation, flexible, binder-free Li-ion batteries. |
| first_indexed | 2024-12-21T14:38:57Z |
| format | Article |
| id | doaj.art-c9b81ded9a234740bd6e4cca53e03005 |
| institution | Directory Open Access Journal |
| issn | 1388-2481 |
| language | English |
| last_indexed | 2024-12-21T14:38:57Z |
| publishDate | 2022-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Electrochemistry Communications |
| spelling | doaj.art-c9b81ded9a234740bd6e4cca53e030052022-12-21T19:00:15ZengElsevierElectrochemistry Communications1388-24812022-04-01137107257High-performance, flexible, binder-free silicon–carbon anode for lithium storage applicationsXiaohua Li0Xinxin Wang1Jianjiang Li2Gang Liu3Dongchen Jia4Zhaoli Ma5Lei Zhang6Zhi Peng7Xiaoyi Zhu8School of Material Science and Engineering, School of Environmental Science and Engineering, College of Chemistry and Chemical Engineering, Chemical Experimental Teaching Center, Qingdao University, No. 308, Ningxia Road, Qingdao 266071, ChinaSchool of Material Science and Engineering, School of Environmental Science and Engineering, College of Chemistry and Chemical Engineering, Chemical Experimental Teaching Center, Qingdao University, No. 308, Ningxia Road, Qingdao 266071, ChinaSchool of Material Science and Engineering, School of Environmental Science and Engineering, College of Chemistry and Chemical Engineering, Chemical Experimental Teaching Center, Qingdao University, No. 308, Ningxia Road, Qingdao 266071, ChinaSchool of Material Science and Engineering, School of Environmental Science and Engineering, College of Chemistry and Chemical Engineering, Chemical Experimental Teaching Center, Qingdao University, No. 308, Ningxia Road, Qingdao 266071, ChinaSchool of Material Science and Engineering, School of Environmental Science and Engineering, College of Chemistry and Chemical Engineering, Chemical Experimental Teaching Center, Qingdao University, No. 308, Ningxia Road, Qingdao 266071, ChinaSchool of Material Science and Engineering, School of Environmental Science and Engineering, College of Chemistry and Chemical Engineering, Chemical Experimental Teaching Center, Qingdao University, No. 308, Ningxia Road, Qingdao 266071, ChinaCentre for Catalysis and Clean Energy, Gold Coast Campus, Griffith University, Queensland 4222, Australia; Corresponding authors.School of Material Science and Engineering, School of Environmental Science and Engineering, College of Chemistry and Chemical Engineering, Chemical Experimental Teaching Center, Qingdao University, No. 308, Ningxia Road, Qingdao 266071, China; Corresponding authors.School of Material Science and Engineering, School of Environmental Science and Engineering, College of Chemistry and Chemical Engineering, Chemical Experimental Teaching Center, Qingdao University, No. 308, Ningxia Road, Qingdao 266071, China; Corresponding authors.The development of flexible Li-ion batteries (LiBs) is important for applications in wearable devices, display systems, intelligent communication, and other electronics fields. Herein, we report a flexible, binder-free, silicon@silica@carbon nanofiber (Si@SiO2@CNF) anode fabricated by a scalable electrospinning method and a novel “pre-oxidation–slicing–carbonization” process. Si nanoparticles (Si NPs) uniformly dispersed within the CNFs were coated with layers of SiO2, leading to the formation of core–shell-structured silicon@silica (Si@SiO2). Due to the introduction of the SiO2 coating, aggregation of the Si NPs was effectively inhibited, and the change in volume of the Si NPs could be confined within the CNFs during cycling, resulting in enhanced structural and cycling stability. Furthermore, the interconnected conductive CNFs further increased the overall conductivity, leading to improved rate performance. More importantly, the novel “pre-oxidation–slicing–carbonization” process ensures the integrity of the edge of the electrode film. The fiber film obtained by electrospinning can be used directly as a freestanding, binder-free anode material, which significantly simplifies the fabrication process and reduces the cost. The Si@SiO2@CNF composite retains excellent performance of 903.7 mAh g−1 beyond 100 cycles at 100 mA g−1, and a remarkable rate capacity of 634.6 mAh g−1 after 300 cycles. The proposed facile and scalable synthesis means that this novel, flexible, and binder-free Si/C anode should have practical applications in next-generation, flexible, binder-free Li-ion batteries.http://www.sciencedirect.com/science/article/pii/S1388248122000595SiliconFlexibleBinder-freeAnodeLi-ion batteries |
| spellingShingle | Xiaohua Li Xinxin Wang Jianjiang Li Gang Liu Dongchen Jia Zhaoli Ma Lei Zhang Zhi Peng Xiaoyi Zhu High-performance, flexible, binder-free silicon–carbon anode for lithium storage applications Electrochemistry Communications Silicon Flexible Binder-free Anode Li-ion batteries |
| title | High-performance, flexible, binder-free silicon–carbon anode for lithium storage applications |
| title_full | High-performance, flexible, binder-free silicon–carbon anode for lithium storage applications |
| title_fullStr | High-performance, flexible, binder-free silicon–carbon anode for lithium storage applications |
| title_full_unstemmed | High-performance, flexible, binder-free silicon–carbon anode for lithium storage applications |
| title_short | High-performance, flexible, binder-free silicon–carbon anode for lithium storage applications |
| title_sort | high performance flexible binder free silicon carbon anode for lithium storage applications |
| topic | Silicon Flexible Binder-free Anode Li-ion batteries |
| url | http://www.sciencedirect.com/science/article/pii/S1388248122000595 |
| work_keys_str_mv | AT xiaohuali highperformanceflexiblebinderfreesiliconcarbonanodeforlithiumstorageapplications AT xinxinwang highperformanceflexiblebinderfreesiliconcarbonanodeforlithiumstorageapplications AT jianjiangli highperformanceflexiblebinderfreesiliconcarbonanodeforlithiumstorageapplications AT gangliu highperformanceflexiblebinderfreesiliconcarbonanodeforlithiumstorageapplications AT dongchenjia highperformanceflexiblebinderfreesiliconcarbonanodeforlithiumstorageapplications AT zhaolima highperformanceflexiblebinderfreesiliconcarbonanodeforlithiumstorageapplications AT leizhang highperformanceflexiblebinderfreesiliconcarbonanodeforlithiumstorageapplications AT zhipeng highperformanceflexiblebinderfreesiliconcarbonanodeforlithiumstorageapplications AT xiaoyizhu highperformanceflexiblebinderfreesiliconcarbonanodeforlithiumstorageapplications |