S‐Doped TiSe2 Nanoplates/Fe3O4 Nanoparticles Heterostructure |
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| Authors: | Jun Yang Yufei Zhang Yizhou Zhang Jinjun Shao Hongbo Geng Yu Zhang Yun Zheng Mani Ulaganathan Zhengfei Dai Bing Li Yun Zong Xiaochen Dong Qingyu Yan Wei Huang |
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| Affiliation: | 1. Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech), Nanjing, China;2. School of Materials Science and Engineering, Nanyang Technological University, Singapore, Singapore;3. Institute of Materials Research and Engineering A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way Innovis #08‐03, Singapore, Singapore |
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| Abstract: | 2D Sulfur‐doped TiSe2/Fe3O4 (named as S‐TiSe2/Fe3O4) heterostructures are synthesized successfully based on a facile oil phase process. The Fe3O4 nanoparticles, with an average size of 8 nm, grow uniformly on the surface of S‐doped TiSe2 (named as S‐TiSe2) nanoplates (300 nm in diameter and 15 nm in thickness). These heterostructures combine the advantages of both S‐TiSe2 with good electrical conductivity and Fe3O4 with high theoretical Li storage capacity. As demonstrated potential applications for energy storage, the S‐TiSe2/Fe3O4 heterostructures possess high reversible capacities (707.4 mAh g−1 at 0.1 A g−1 during the 100th cycle), excellent cycling stability (432.3 mAh g−1 after 200 cycles at 5 A g−1), and good rate capability (e.g., 301.7 mAh g−1 at 20 A g−1) in lithium‐ion batteries. As for sodium‐ion batteries, the S‐TiSe2/Fe3O4 heterostructures also maintain reversible capacities of 402.3 mAh g−1 at 0.1 A g−1 after 100 cycles, and a high rate capacity of 203.3 mAh g−1 at 4 A g−1. |
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| Keywords: | heterostructures lithium‐ion batteries S‐doped TiSe2 nanoplates sodium‐ion batteries |
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