Silicon–Nanodiamond-Based Anode for a Lithium-Ion Battery
Maintaining the physical integrity of a silicon-based anode, which suffers from damage caused by severe volume changes during cycling, is a top priority in its practical applications. The performance of silicon-flake-based anodes has been significantly improved by mixing nanodiamond powders with sil...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-12-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/14/1/43 |
| _version_ | 1797358383629598720 |
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| author | Cheng-Ying Jhan Shi-Hong Sung Yonhua Tzeng |
| author_facet | Cheng-Ying Jhan Shi-Hong Sung Yonhua Tzeng |
| author_sort | Cheng-Ying Jhan |
| collection | DOAJ |
| description | Maintaining the physical integrity of a silicon-based anode, which suffers from damage caused by severe volume changes during cycling, is a top priority in its practical applications. The performance of silicon-flake-based anodes has been significantly improved by mixing nanodiamond powders with silicon flakes for the fabrication of anodes for lithium-ion batteries (LIBs). Nanodiamonds adhere to the surfaces of silicon flakes and are distributed in the binder between flakes. A consistent and robust solid electrolyte interphase (SEI) is promoted by the aid of abundant reactive surface-linked functional groups and exposed dangling bonds of nanodiamonds, leading to enhanced physical integrity of the silicon flakes and the anode. The battery’s high-rate discharge capabilities and cycle life are thus improved. SEM, Raman spectroscopy, and XRD were applied to examine the structure and morphology of the anode. Electrochemical performance was evaluated to demonstrate a capacity retention of nearly 75% after 200 cycles, with the final specific capacity exceeding 1000 mAh/g at a test current of 4 mA/cm<sup>2</sup>. This is attributed to the improved stability of the solid electrolyte interphase (SEI) structure that was achieved by integrating nanodiamonds with silicon flakes in the anode, leading to enhanced cycling stability and rapid charge-discharge performance. The results from this study present an effective strategy of achieving high-cycling-performance by adding nanodiamonds to silicon-flake-based anodes. |
| first_indexed | 2024-03-08T15:00:10Z |
| format | Article |
| id | doaj.art-38148471584c4df1b65c95f0bd49b0a0 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-08T15:00:10Z |
| publishDate | 2023-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-38148471584c4df1b65c95f0bd49b0a02024-01-10T15:04:52ZengMDPI AGNanomaterials2079-49912023-12-011414310.3390/nano14010043Silicon–Nanodiamond-Based Anode for a Lithium-Ion BatteryCheng-Ying Jhan0Shi-Hong Sung1Yonhua Tzeng2Institute of Microelectronics, Department of Electrical Engineering, National Cheng Kung University, One University Road, Tainan 70101, TaiwanInstitute of Microelectronics, Department of Electrical Engineering, National Cheng Kung University, One University Road, Tainan 70101, TaiwanInstitute of Microelectronics, Department of Electrical Engineering, National Cheng Kung University, One University Road, Tainan 70101, TaiwanMaintaining the physical integrity of a silicon-based anode, which suffers from damage caused by severe volume changes during cycling, is a top priority in its practical applications. The performance of silicon-flake-based anodes has been significantly improved by mixing nanodiamond powders with silicon flakes for the fabrication of anodes for lithium-ion batteries (LIBs). Nanodiamonds adhere to the surfaces of silicon flakes and are distributed in the binder between flakes. A consistent and robust solid electrolyte interphase (SEI) is promoted by the aid of abundant reactive surface-linked functional groups and exposed dangling bonds of nanodiamonds, leading to enhanced physical integrity of the silicon flakes and the anode. The battery’s high-rate discharge capabilities and cycle life are thus improved. SEM, Raman spectroscopy, and XRD were applied to examine the structure and morphology of the anode. Electrochemical performance was evaluated to demonstrate a capacity retention of nearly 75% after 200 cycles, with the final specific capacity exceeding 1000 mAh/g at a test current of 4 mA/cm<sup>2</sup>. This is attributed to the improved stability of the solid electrolyte interphase (SEI) structure that was achieved by integrating nanodiamonds with silicon flakes in the anode, leading to enhanced cycling stability and rapid charge-discharge performance. The results from this study present an effective strategy of achieving high-cycling-performance by adding nanodiamonds to silicon-flake-based anodes.https://www.mdpi.com/2079-4991/14/1/43siliconanodenanodiamondbatterySEI |
| spellingShingle | Cheng-Ying Jhan Shi-Hong Sung Yonhua Tzeng Silicon–Nanodiamond-Based Anode for a Lithium-Ion Battery Nanomaterials silicon anode nanodiamond battery SEI |
| title | Silicon–Nanodiamond-Based Anode for a Lithium-Ion Battery |
| title_full | Silicon–Nanodiamond-Based Anode for a Lithium-Ion Battery |
| title_fullStr | Silicon–Nanodiamond-Based Anode for a Lithium-Ion Battery |
| title_full_unstemmed | Silicon–Nanodiamond-Based Anode for a Lithium-Ion Battery |
| title_short | Silicon–Nanodiamond-Based Anode for a Lithium-Ion Battery |
| title_sort | silicon nanodiamond based anode for a lithium ion battery |
| topic | silicon anode nanodiamond battery SEI |
| url | https://www.mdpi.com/2079-4991/14/1/43 |
| work_keys_str_mv | AT chengyingjhan siliconnanodiamondbasedanodeforalithiumionbattery AT shihongsung siliconnanodiamondbasedanodeforalithiumionbattery AT yonhuatzeng siliconnanodiamondbasedanodeforalithiumionbattery |