Preparation and Electrochemical Characterization of Si@C Nanoparticles as an Anode Material for Lithium-Ion Batteries via Solvent-Assisted Wet Coating Process
Silicon-based electrodes are widely recognized as promising anodes for high-energy-density lithium-ion batteries (LIBs). Silicon is a representative anode material for next-generation LIBs due to its advantages of being an abundant resource and having a high theoretical capacity and a low electroche...
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MDPI AG
2022-05-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/12/10/1649 |
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| author | Jongha Hwang Mincheol Jung Jin-Ju Park Eun-Kyung Kim Gunoh Lee Kyung Jin Lee Jae-Hak Choi Woo-Jin Song |
| author_facet | Jongha Hwang Mincheol Jung Jin-Ju Park Eun-Kyung Kim Gunoh Lee Kyung Jin Lee Jae-Hak Choi Woo-Jin Song |
| author_sort | Jongha Hwang |
| collection | DOAJ |
| description | Silicon-based electrodes are widely recognized as promising anodes for high-energy-density lithium-ion batteries (LIBs). Silicon is a representative anode material for next-generation LIBs due to its advantages of being an abundant resource and having a high theoretical capacity and a low electrochemical reduction potential. However, its huge volume change during the charge–discharge process and low electrical conductivity can be critical problems in its utilization as a practical anode material. In this study, we solved the problem of the large volume expansion of silicon anodes by using the carbon coating method with a low-cost phenolic resin that can be used to obtain high-performance LIBs. The surrounding carbon layers on the silicon surface were well made from a phenolic resin via a solvent-assisted wet coating process followed by carbonization. Consequently, the electrochemical performance of the carbon-coated silicon anode achieved a high specific capacity (3092 mA h g<sup>−1</sup>) and excellent capacity retention (~100% capacity retention after 50 cycles and even 64% capacity retention after 100 cycles at 0.05 C). This work provides a simple but effective strategy for the improvement of silicon-based anodes for high-performance LIBs. |
| first_indexed | 2024-03-10T03:16:57Z |
| format | Article |
| id | doaj.art-3ac275907466474e81c42c1a5149b051 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T03:16:57Z |
| publishDate | 2022-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-3ac275907466474e81c42c1a5149b0512023-11-23T12:26:00ZengMDPI AGNanomaterials2079-49912022-05-011210164910.3390/nano12101649Preparation and Electrochemical Characterization of Si@C Nanoparticles as an Anode Material for Lithium-Ion Batteries via Solvent-Assisted Wet Coating ProcessJongha Hwang0Mincheol Jung1Jin-Ju Park2Eun-Kyung Kim3Gunoh Lee4Kyung Jin Lee5Jae-Hak Choi6Woo-Jin Song7Department of Polymer Science and Engineering, Chungnam National University, Daejeon 34134, KoreaDepartment of Polymer Science and Engineering, Chungnam National University, Daejeon 34134, KoreaDepartment of Polymer Science and Engineering, Chungnam National University, Daejeon 34134, KoreaDepartment of Polymer Science and Engineering, Chungnam National University, Daejeon 34134, KoreaDepartment of Chemical Engineering and Applied Chemistry, Chungnam National University, Daejeon 34134, KoreaDepartment of Chemical Engineering and Applied Chemistry, Chungnam National University, Daejeon 34134, KoreaDepartment of Polymer Science and Engineering, Chungnam National University, Daejeon 34134, KoreaDepartment of Polymer Science and Engineering, Chungnam National University, Daejeon 34134, KoreaSilicon-based electrodes are widely recognized as promising anodes for high-energy-density lithium-ion batteries (LIBs). Silicon is a representative anode material for next-generation LIBs due to its advantages of being an abundant resource and having a high theoretical capacity and a low electrochemical reduction potential. However, its huge volume change during the charge–discharge process and low electrical conductivity can be critical problems in its utilization as a practical anode material. In this study, we solved the problem of the large volume expansion of silicon anodes by using the carbon coating method with a low-cost phenolic resin that can be used to obtain high-performance LIBs. The surrounding carbon layers on the silicon surface were well made from a phenolic resin via a solvent-assisted wet coating process followed by carbonization. Consequently, the electrochemical performance of the carbon-coated silicon anode achieved a high specific capacity (3092 mA h g<sup>−1</sup>) and excellent capacity retention (~100% capacity retention after 50 cycles and even 64% capacity retention after 100 cycles at 0.05 C). This work provides a simple but effective strategy for the improvement of silicon-based anodes for high-performance LIBs.https://www.mdpi.com/2079-4991/12/10/1649silicon anodecarbon coatinglithium-ion batteriesphenolic resin |
| spellingShingle | Jongha Hwang Mincheol Jung Jin-Ju Park Eun-Kyung Kim Gunoh Lee Kyung Jin Lee Jae-Hak Choi Woo-Jin Song Preparation and Electrochemical Characterization of Si@C Nanoparticles as an Anode Material for Lithium-Ion Batteries via Solvent-Assisted Wet Coating Process Nanomaterials silicon anode carbon coating lithium-ion batteries phenolic resin |
| title | Preparation and Electrochemical Characterization of Si@C Nanoparticles as an Anode Material for Lithium-Ion Batteries via Solvent-Assisted Wet Coating Process |
| title_full | Preparation and Electrochemical Characterization of Si@C Nanoparticles as an Anode Material for Lithium-Ion Batteries via Solvent-Assisted Wet Coating Process |
| title_fullStr | Preparation and Electrochemical Characterization of Si@C Nanoparticles as an Anode Material for Lithium-Ion Batteries via Solvent-Assisted Wet Coating Process |
| title_full_unstemmed | Preparation and Electrochemical Characterization of Si@C Nanoparticles as an Anode Material for Lithium-Ion Batteries via Solvent-Assisted Wet Coating Process |
| title_short | Preparation and Electrochemical Characterization of Si@C Nanoparticles as an Anode Material for Lithium-Ion Batteries via Solvent-Assisted Wet Coating Process |
| title_sort | preparation and electrochemical characterization of si c nanoparticles as an anode material for lithium ion batteries via solvent assisted wet coating process |
| topic | silicon anode carbon coating lithium-ion batteries phenolic resin |
| url | https://www.mdpi.com/2079-4991/12/10/1649 |
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