Carbon-Coated CF-Si/Al Anodes for Improved Lithium-Ion Battery Performance
Despite their high specific capacity, magnetron-sputtered Si/Al thin films face rapid capacity decay due to stress-induced cracking, delamination, and detrimental electrolyte reactions. This study introduces a carbon-coated composite anode that overcomes these limitations, delivering superior revers...
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MDPI AG
2025-03-01
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| Series: | Batteries |
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| Online Access: | https://www.mdpi.com/2313-0105/11/3/114 |
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| author | Liangliang Zeng Peng Li Mi Ouyang Shujuan Gao Kun Liang |
| author_facet | Liangliang Zeng Peng Li Mi Ouyang Shujuan Gao Kun Liang |
| author_sort | Liangliang Zeng |
| collection | DOAJ |
| description | Despite their high specific capacity, magnetron-sputtered Si/Al thin films face rapid capacity decay due to stress-induced cracking, delamination, and detrimental electrolyte reactions. This study introduces a carbon-coated composite anode that overcomes these limitations, delivering superior reversible capacity, exceptional rate capability, and stable cycling performance. An electrochemical evaluation reveals that the CF-Si/Al@C-500-1h composite exhibits marked enhancements in capacity retention (43.5% after 100 cycles at 0.6 A·g<sup>−1</sup>) and rate capability, maintaining 579.1 mAh·g<sup>−1</sup> at 3 A·g<sup>−1</sup> (1 C). The carbon layer enhances electrical conductivity, buffers volume expansion during lithiation/delithiation, and suppresses silicon aggregation and electrolyte side reactions. Coupled with an aluminum framework, this architecture ensures robust structural integrity and efficient lithium-ion transport. These advancements position CF-Si/Al@C-500-1h as a promising anode material for next-generation lithium-ion batteries, while insights into scalable fabrication and carbon integration strategies pave the way for practical applications. |
| format | Article |
| id | doaj-art-4c2a67062b1a4dae8b5fcd64d3b6b986 |
| institution | OA Journals |
| issn | 2313-0105 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Batteries |
| spelling | doaj-art-4c2a67062b1a4dae8b5fcd64d3b6b9862025-08-20T02:11:12ZengMDPI AGBatteries2313-01052025-03-0111311410.3390/batteries11030114Carbon-Coated CF-Si/Al Anodes for Improved Lithium-Ion Battery PerformanceLiangliang Zeng0Peng Li1Mi Ouyang2Shujuan Gao3Kun Liang4College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, ChinaZhejiang Key Laboratory of Data-Driven High-Safety Energy Materials and Applications, Ningbo Key Laboratory of Special Energy Materials and Chemistry, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, ChinaCollege of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, ChinaNingbo Guangxin Nanomaterials Co., Ltd., Ningbo 315000, ChinaZhejiang Key Laboratory of Data-Driven High-Safety Energy Materials and Applications, Ningbo Key Laboratory of Special Energy Materials and Chemistry, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, ChinaDespite their high specific capacity, magnetron-sputtered Si/Al thin films face rapid capacity decay due to stress-induced cracking, delamination, and detrimental electrolyte reactions. This study introduces a carbon-coated composite anode that overcomes these limitations, delivering superior reversible capacity, exceptional rate capability, and stable cycling performance. An electrochemical evaluation reveals that the CF-Si/Al@C-500-1h composite exhibits marked enhancements in capacity retention (43.5% after 100 cycles at 0.6 A·g<sup>−1</sup>) and rate capability, maintaining 579.1 mAh·g<sup>−1</sup> at 3 A·g<sup>−1</sup> (1 C). The carbon layer enhances electrical conductivity, buffers volume expansion during lithiation/delithiation, and suppresses silicon aggregation and electrolyte side reactions. Coupled with an aluminum framework, this architecture ensures robust structural integrity and efficient lithium-ion transport. These advancements position CF-Si/Al@C-500-1h as a promising anode material for next-generation lithium-ion batteries, while insights into scalable fabrication and carbon integration strategies pave the way for practical applications.https://www.mdpi.com/2313-0105/11/3/114Li-ion batterymagnetron sputteringco-sputteringcyclic stability |
| spellingShingle | Liangliang Zeng Peng Li Mi Ouyang Shujuan Gao Kun Liang Carbon-Coated CF-Si/Al Anodes for Improved Lithium-Ion Battery Performance Batteries Li-ion battery magnetron sputtering co-sputtering cyclic stability |
| title | Carbon-Coated CF-Si/Al Anodes for Improved Lithium-Ion Battery Performance |
| title_full | Carbon-Coated CF-Si/Al Anodes for Improved Lithium-Ion Battery Performance |
| title_fullStr | Carbon-Coated CF-Si/Al Anodes for Improved Lithium-Ion Battery Performance |
| title_full_unstemmed | Carbon-Coated CF-Si/Al Anodes for Improved Lithium-Ion Battery Performance |
| title_short | Carbon-Coated CF-Si/Al Anodes for Improved Lithium-Ion Battery Performance |
| title_sort | carbon coated cf si al anodes for improved lithium ion battery performance |
| topic | Li-ion battery magnetron sputtering co-sputtering cyclic stability |
| url | https://www.mdpi.com/2313-0105/11/3/114 |
| work_keys_str_mv | AT liangliangzeng carboncoatedcfsialanodesforimprovedlithiumionbatteryperformance AT pengli carboncoatedcfsialanodesforimprovedlithiumionbatteryperformance AT miouyang carboncoatedcfsialanodesforimprovedlithiumionbatteryperformance AT shujuangao carboncoatedcfsialanodesforimprovedlithiumionbatteryperformance AT kunliang carboncoatedcfsialanodesforimprovedlithiumionbatteryperformance |