Nonporous TiO2@C microsphere with a highly integrated structure for high volumetric lithium storage and enhance initial coulombic efficiency
Abstract To enhance the volumetric energy density and initial coulombic efficiency (ICE) of titanium oxide (TiO2) as anode electrode material for lithium-ion batteries (LIB), this study employed a surface-confined in-situ inter-growth mechanism to prepare a TiO2 embedded carbon microsphere composite...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-12-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-024-82179-z |
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| author | Jinpeng Yin Guanqin Wang Dongqing Kong Chuang Li Qiang Zhang Dongbai Xie Yangyang Yan Ning Li Qiang Li |
| author_facet | Jinpeng Yin Guanqin Wang Dongqing Kong Chuang Li Qiang Zhang Dongbai Xie Yangyang Yan Ning Li Qiang Li |
| author_sort | Jinpeng Yin |
| collection | DOAJ |
| description | Abstract To enhance the volumetric energy density and initial coulombic efficiency (ICE) of titanium oxide (TiO2) as anode electrode material for lithium-ion batteries (LIB), this study employed a surface-confined in-situ inter-growth mechanism to prepare a TiO2 embedded carbon microsphere composite. The results revealed that the composite exhibited a highly integrated structure of TiO2 with oxygen vacancies and carbon, along with an exceptionally small specific surface area of 11.52 m2/g. Due to its unique microstructure, the composite demonstrated remarkable lithium storage properties, including a high ICE of 75%, a notable capacity of 426.8 mAh/g after 200 cycles at 0.2 A/g, superior rate performance of 210.1 mAh/g at 5 A/g, and an outstanding cycle life, with a capacity decay rate of only 0.003% per cycle over 2000 cycles. Furthermore, electrochemical kinetic studies further validated the advantages of this microstructure. |
| format | Article |
| id | doaj-art-e45a76cccb464076a2bd7e7c84fa8611 |
| institution | DOAJ |
| issn | 2045-2322 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-e45a76cccb464076a2bd7e7c84fa86112025-08-20T02:43:33ZengNature PortfolioScientific Reports2045-23222024-12-0114111210.1038/s41598-024-82179-zNonporous TiO2@C microsphere with a highly integrated structure for high volumetric lithium storage and enhance initial coulombic efficiencyJinpeng Yin0Guanqin Wang1Dongqing Kong2Chuang Li3Qiang Zhang4Dongbai Xie5Yangyang Yan6Ning Li7Qiang Li8Shandong Engineering Research Center of Green and High-value Marine Fine Chemical, Weifang University of Science and TechnologyShandong Engineering Research Center of Green and High-value Marine Fine Chemical, Weifang University of Science and TechnologyShandong Engineering Research Center of Green and High-value Marine Fine Chemical, Weifang University of Science and TechnologyShandong Engineering Research Center of Green and High-value Marine Fine Chemical, Weifang University of Science and TechnologyShandong Engineering Research Center of Green and High-value Marine Fine Chemical, Weifang University of Science and TechnologyShandong Engineering Research Center of Green and High-value Marine Fine Chemical, Weifang University of Science and TechnologyShandong Engineering Research Center of Green and High-value Marine Fine Chemical, Weifang University of Science and TechnologyShandong Engineering Research Center of Green and High-value Marine Fine Chemical, Weifang University of Science and TechnologyShandong Engineering Research Center of Green and High-value Marine Fine Chemical, Weifang University of Science and TechnologyAbstract To enhance the volumetric energy density and initial coulombic efficiency (ICE) of titanium oxide (TiO2) as anode electrode material for lithium-ion batteries (LIB), this study employed a surface-confined in-situ inter-growth mechanism to prepare a TiO2 embedded carbon microsphere composite. The results revealed that the composite exhibited a highly integrated structure of TiO2 with oxygen vacancies and carbon, along with an exceptionally small specific surface area of 11.52 m2/g. Due to its unique microstructure, the composite demonstrated remarkable lithium storage properties, including a high ICE of 75%, a notable capacity of 426.8 mAh/g after 200 cycles at 0.2 A/g, superior rate performance of 210.1 mAh/g at 5 A/g, and an outstanding cycle life, with a capacity decay rate of only 0.003% per cycle over 2000 cycles. Furthermore, electrochemical kinetic studies further validated the advantages of this microstructure.https://doi.org/10.1038/s41598-024-82179-zLithium-ion batteriesTiO2Coulombic efficiencyOxygen vacancies |
| spellingShingle | Jinpeng Yin Guanqin Wang Dongqing Kong Chuang Li Qiang Zhang Dongbai Xie Yangyang Yan Ning Li Qiang Li Nonporous TiO2@C microsphere with a highly integrated structure for high volumetric lithium storage and enhance initial coulombic efficiency Scientific Reports Lithium-ion batteries TiO2 Coulombic efficiency Oxygen vacancies |
| title | Nonporous TiO2@C microsphere with a highly integrated structure for high volumetric lithium storage and enhance initial coulombic efficiency |
| title_full | Nonporous TiO2@C microsphere with a highly integrated structure for high volumetric lithium storage and enhance initial coulombic efficiency |
| title_fullStr | Nonporous TiO2@C microsphere with a highly integrated structure for high volumetric lithium storage and enhance initial coulombic efficiency |
| title_full_unstemmed | Nonporous TiO2@C microsphere with a highly integrated structure for high volumetric lithium storage and enhance initial coulombic efficiency |
| title_short | Nonporous TiO2@C microsphere with a highly integrated structure for high volumetric lithium storage and enhance initial coulombic efficiency |
| title_sort | nonporous tio2 c microsphere with a highly integrated structure for high volumetric lithium storage and enhance initial coulombic efficiency |
| topic | Lithium-ion batteries TiO2 Coulombic efficiency Oxygen vacancies |
| url | https://doi.org/10.1038/s41598-024-82179-z |
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