Synthesis of dual-modified Fe-doped and carbon-coated Li4Ti5O12 anode based on industrial H2TiO3 for Li-ion batteries
Abstract Spinel Li4Ti5O12 (LTO) is a promising candidate for lithium-ion battery anodes because of its exceptional stability and safety. However, its extensive application is limited by a high comprehensive cost, poor electronic conductivity, and other inherent defects. This work presents a novel sy...
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| Format: | Article |
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Nature Portfolio
2023-09-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-023-41830-x |
| _version_ | 1797576762293485568 |
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| author | Xinyu Jiang Guangqiang Ma Qinmei Zhu Hongwei Ge Qiyuan Chen Beilei Yan Lin Deng Congxue Tian Chuanbao Wu |
| author_facet | Xinyu Jiang Guangqiang Ma Qinmei Zhu Hongwei Ge Qiyuan Chen Beilei Yan Lin Deng Congxue Tian Chuanbao Wu |
| author_sort | Xinyu Jiang |
| collection | DOAJ |
| description | Abstract Spinel Li4Ti5O12 (LTO) is a promising candidate for lithium-ion battery anodes because of its exceptional stability and safety. However, its extensive application is limited by a high comprehensive cost, poor electronic conductivity, and other inherent defects. This work presents a novel synthesis procedure to synthesize carbon-coated Fe-doped LTO composites through carbon reduction, in the presence of Fe-containing industrial H2TiO3 as the titanium source, and glucose as the carbon source. The presence of the Fe-dopant is confirmed through XRD, with Rietveld refinement and EDS experiments. Results show that Fe2+ replaces a portion of Ti4+ after doping, leading to an increase in the LTO cell parameters and the corresponding cell volume. FLTO/C, presents a capacity of 153.79 mAh g−1 at 10 C, and the capacity decay per cycle is only 0.0074% after 1000 cycles at 5 C. Moreover, EIS experiments indicate that the incorporation of Fe and carbon lowers the charge transfer resistance and improves the diffusion and migration of Li+. Notably, since this preparation process requires no additional Fe source as a raw material, it is simple, cost-effective, and suitable for large-scale production and further application. |
| first_indexed | 2024-03-10T21:58:21Z |
| format | Article |
| id | doaj.art-4ea0c53b97d246ae8303c13f49cd2e9a |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-03-10T21:58:21Z |
| publishDate | 2023-09-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-4ea0c53b97d246ae8303c13f49cd2e9a2023-11-19T13:02:36ZengNature PortfolioScientific Reports2045-23222023-09-0113111010.1038/s41598-023-41830-xSynthesis of dual-modified Fe-doped and carbon-coated Li4Ti5O12 anode based on industrial H2TiO3 for Li-ion batteriesXinyu Jiang0Guangqiang Ma1Qinmei Zhu2Hongwei Ge3Qiyuan Chen4Beilei Yan5Lin Deng6Congxue Tian7Chuanbao Wu8College of Biological and Chemical Engineering, Panzhihua UniversityCollege of Biological and Chemical Engineering, Panzhihua UniversityCollege of Biological and Chemical Engineering, Panzhihua UniversityCollege of Biological and Chemical Engineering, Panzhihua UniversityCollege of Biological and Chemical Engineering, Panzhihua UniversityCollege of Biological and Chemical Engineering, Panzhihua UniversityCollege of Biological and Chemical Engineering, Panzhihua UniversityCollege of Biological and Chemical Engineering, Panzhihua UniversityCollege of Biological and Chemical Engineering, Panzhihua UniversityAbstract Spinel Li4Ti5O12 (LTO) is a promising candidate for lithium-ion battery anodes because of its exceptional stability and safety. However, its extensive application is limited by a high comprehensive cost, poor electronic conductivity, and other inherent defects. This work presents a novel synthesis procedure to synthesize carbon-coated Fe-doped LTO composites through carbon reduction, in the presence of Fe-containing industrial H2TiO3 as the titanium source, and glucose as the carbon source. The presence of the Fe-dopant is confirmed through XRD, with Rietveld refinement and EDS experiments. Results show that Fe2+ replaces a portion of Ti4+ after doping, leading to an increase in the LTO cell parameters and the corresponding cell volume. FLTO/C, presents a capacity of 153.79 mAh g−1 at 10 C, and the capacity decay per cycle is only 0.0074% after 1000 cycles at 5 C. Moreover, EIS experiments indicate that the incorporation of Fe and carbon lowers the charge transfer resistance and improves the diffusion and migration of Li+. Notably, since this preparation process requires no additional Fe source as a raw material, it is simple, cost-effective, and suitable for large-scale production and further application.https://doi.org/10.1038/s41598-023-41830-x |
| spellingShingle | Xinyu Jiang Guangqiang Ma Qinmei Zhu Hongwei Ge Qiyuan Chen Beilei Yan Lin Deng Congxue Tian Chuanbao Wu Synthesis of dual-modified Fe-doped and carbon-coated Li4Ti5O12 anode based on industrial H2TiO3 for Li-ion batteries Scientific Reports |
| title | Synthesis of dual-modified Fe-doped and carbon-coated Li4Ti5O12 anode based on industrial H2TiO3 for Li-ion batteries |
| title_full | Synthesis of dual-modified Fe-doped and carbon-coated Li4Ti5O12 anode based on industrial H2TiO3 for Li-ion batteries |
| title_fullStr | Synthesis of dual-modified Fe-doped and carbon-coated Li4Ti5O12 anode based on industrial H2TiO3 for Li-ion batteries |
| title_full_unstemmed | Synthesis of dual-modified Fe-doped and carbon-coated Li4Ti5O12 anode based on industrial H2TiO3 for Li-ion batteries |
| title_short | Synthesis of dual-modified Fe-doped and carbon-coated Li4Ti5O12 anode based on industrial H2TiO3 for Li-ion batteries |
| title_sort | synthesis of dual modified fe doped and carbon coated li4ti5o12 anode based on industrial h2tio3 for li ion batteries |
| url | https://doi.org/10.1038/s41598-023-41830-x |
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