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Single crystal nanobelts of V3O7·H2O: A lithium intercalation host with a large capacity |
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| Authors: | Shaokang Gao Zhanjun Chen Mingdeng Wei Kemei Wei |
| Affiliation: | a Institute of New Energy Technology and Nano-Materials, Fuzhou University, Fuzhou, Fujian 350002, China b College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou, Fujian 350002, China c National Engineering Research Center for Fertilizer Catalyst, Fuzhou University, Fuzhou, Fujian 350002, China d Energy Technology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), AIST Tsukuba Center, Ibaraki 305-8568, Japan |
| Abstract: | In this study, single crystal V3O7·H2O nanobelts were successfully synthesized using a simple hydrothermal route, in which templates or catalysts were absent. The synthesized V3O7·H2O nanobelts are highly crystalline and have lengths up to several tens of micrometers. The width and thickness of the nanobelts are found to be about 30-50 and 30 nm, respectively. A lithium battery using V3O7·H2O nanobelts as the positive electrode exhibits a high initial discharge capacity of 409 mAh g−1, corresponding to the formation of LixV3O7·H2O (x = 4.32). Such a high degree of electrochemical performance is attributed to the intrinsic properties of the single-crystalline V3O7·H2O nanobelts. |
| Keywords: | V3O7· H2O nanobelts Lithium intercalation Electrochemical behavior |
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