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Assembly of Na3V2(PO4)3 Nanoparticles Confined in a One‐Dimensional Carbon Sheath for Enhanced Sodium‐Ion Cathode Properties |
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| Authors: | Dr Satoshi Kajiyama Dr Jun Kikkawa Junichi Hoshino Dr Masashi Okubo Dr Eiji Hosono |
| Institution: | 1. Energy Technology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305‐8568 (Japan), Fax: (+81)?29‐861‐3489;2. Advanced Key Technologies Division, National Institute for Materials Science (NIMS), Tsukuba, Ibaraki 305‐0044 (Japan) |
| Abstract: | Structural and morphological control is an effective approach for improvement of electrochemical properties in rechargeable batteries. One‐dimensionally assembled structure composed of NASICON‐type Na3V2(PO4)3 nanoparticles were fabricated through an electrospinning method to meet the requirements for the development of efficient electrode materials in Na‐ion batteries. High‐temperature treatment of electrospun precursor fibers under an argon flow provides a nonwoven fabric of nanowires comprising crystallographically oriented nanoparticles of NASICON‐type Na3V2(PO4)3 within a carbon sheath. The mesostructure comprising NASICON‐type Na3V2(PO4)3 and carbon give a short sodium‐ion transport pass and an efficient electron conduction pass. Electrochemical properties of NASICON‐type Na3V2(PO4)3 are improved on the basis of one‐dimensional nanostructures designed in the present study. |
| Keywords: | batteries electrochemistry nanostructures nanowires sodium ions |