A green route based on π-π interactions to coat graphite for high-rate and long-life anodes in lithium-ion batteries
Although graphite (G) materials dominate the commercial lithium-ion battery (LIBs) anode market due to their excellent overall performance, their limited rate performance and cycle life hinder applications in high-performance fields. To improve the cycling and rate performance of graphite anodes, th...
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| Format: | Article |
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KeAi Communications Co. Ltd.
2025-05-01
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| Series: | Materials Reports: Energy |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666935825000205 |
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| author | Yu Zou Yang Lyu Hanxin Wei Baohui Chen Xiansi Wang Ming Zhang |
| author_facet | Yu Zou Yang Lyu Hanxin Wei Baohui Chen Xiansi Wang Ming Zhang |
| author_sort | Yu Zou |
| collection | DOAJ |
| description | Although graphite (G) materials dominate the commercial lithium-ion battery (LIBs) anode market due to their excellent overall performance, their limited rate performance and cycle life hinder applications in high-performance fields. To improve the cycling and rate performance of graphite anodes, this study first employed economical and eco-friendly tannic acid (TA) as a carbon coating precursor to coat graphite surfaces via π-π stacking interactions. In an oxygen-rich alkaline environment, tannic acid undergoes oxidation polymerization and crosslinks with formaldehyde to form a polymer matrix that coats the graphite surface. After subsequent carbonization, carbon-coated graphite material (G@C) was successfully synthesized. Carbon coatings on graphite effectively lower LIB resistance, enhance lithium-ion diffusion, and prevent exfoliation during cycling, thereby significantly boosting rate performance and prolonging the cycle life of graphite. After 500 cycles at 2C, the specific capacity of G@C was 103.7 mAh g−1, with a retention of 89%. However, G exhibited only 68.7 mAh g−1 and 85% retention under identical conditions. This carbon-coated graphite modification strategy offers a novel, green, and economical approach for designing and tailoring graphite anode materials for lithium-ion batteries with long cycle life and high rate. |
| format | Article |
| id | doaj-art-066db6c033ad4f3790a316e4d1af3d2f |
| institution | Kabale University |
| issn | 2666-9358 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | KeAi Communications Co. Ltd. |
| record_format | Article |
| series | Materials Reports: Energy |
| spelling | doaj-art-066db6c033ad4f3790a316e4d1af3d2f2025-08-20T03:55:17ZengKeAi Communications Co. Ltd.Materials Reports: Energy2666-93582025-05-015210033210.1016/j.matre.2025.100332A green route based on π-π interactions to coat graphite for high-rate and long-life anodes in lithium-ion batteriesYu Zou0Yang Lyu1Hanxin Wei2Baohui Chen3Xiansi Wang4Ming Zhang5School of Physics and Electronics, Hunan University, Changsha, 410082, ChinaState Key Laboratory of Disaster Prevention & Reduction for Power Grid (Hunan Electric Power Corporation Disaster Prevention and Reduction Center), Changsha, 410007, ChinaState Key Laboratory of Disaster Prevention & Reduction for Power Grid (Hunan Electric Power Corporation Disaster Prevention and Reduction Center), Changsha, 410007, ChinaState Key Laboratory of Disaster Prevention & Reduction for Power Grid (Hunan Electric Power Corporation Disaster Prevention and Reduction Center), Changsha, 410007, China; Corresponding author. School of Physics and Electronics, Hunan University, Changsha 410082, China.School of Physics and Electronics, Hunan University, Changsha, 410082, ChinaSchool of Physics and Electronics, Hunan University, Changsha, 410082, China; Engineering Research Center of Advanced Semiconductor Technology and Application of Ministry of Education, National Key Laboratory of Power Semiconductor and Integration Technology, College of Semiconductors (College of Integrated Circuits), Hunan University, Changsha, 410082, China; Changsha Semiconductor Technology and Application Innovation Research Institute, College of Semiconductors (College of Integrated Circuits), Hunan University, Changsha, 410082, China; Corresponding author. Engineering Research Center of Advanced Semiconductor Technology and Application of Ministry of Education, National Key Laboratory of Power Semiconductor and Integration Technology, College of Semiconductors (College of Integrated Circuits), Hunan University, Changsha, 410082, China.Although graphite (G) materials dominate the commercial lithium-ion battery (LIBs) anode market due to their excellent overall performance, their limited rate performance and cycle life hinder applications in high-performance fields. To improve the cycling and rate performance of graphite anodes, this study first employed economical and eco-friendly tannic acid (TA) as a carbon coating precursor to coat graphite surfaces via π-π stacking interactions. In an oxygen-rich alkaline environment, tannic acid undergoes oxidation polymerization and crosslinks with formaldehyde to form a polymer matrix that coats the graphite surface. After subsequent carbonization, carbon-coated graphite material (G@C) was successfully synthesized. Carbon coatings on graphite effectively lower LIB resistance, enhance lithium-ion diffusion, and prevent exfoliation during cycling, thereby significantly boosting rate performance and prolonging the cycle life of graphite. After 500 cycles at 2C, the specific capacity of G@C was 103.7 mAh g−1, with a retention of 89%. However, G exhibited only 68.7 mAh g−1 and 85% retention under identical conditions. This carbon-coated graphite modification strategy offers a novel, green, and economical approach for designing and tailoring graphite anode materials for lithium-ion batteries with long cycle life and high rate.http://www.sciencedirect.com/science/article/pii/S2666935825000205Lithium-ion batteryGraphiteTannic acidGreenCarbon coating |
| spellingShingle | Yu Zou Yang Lyu Hanxin Wei Baohui Chen Xiansi Wang Ming Zhang A green route based on π-π interactions to coat graphite for high-rate and long-life anodes in lithium-ion batteries Materials Reports: Energy Lithium-ion battery Graphite Tannic acid Green Carbon coating |
| title | A green route based on π-π interactions to coat graphite for high-rate and long-life anodes in lithium-ion batteries |
| title_full | A green route based on π-π interactions to coat graphite for high-rate and long-life anodes in lithium-ion batteries |
| title_fullStr | A green route based on π-π interactions to coat graphite for high-rate and long-life anodes in lithium-ion batteries |
| title_full_unstemmed | A green route based on π-π interactions to coat graphite for high-rate and long-life anodes in lithium-ion batteries |
| title_short | A green route based on π-π interactions to coat graphite for high-rate and long-life anodes in lithium-ion batteries |
| title_sort | green route based on π π interactions to coat graphite for high rate and long life anodes in lithium ion batteries |
| topic | Lithium-ion battery Graphite Tannic acid Green Carbon coating |
| url | http://www.sciencedirect.com/science/article/pii/S2666935825000205 |
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