title: Assembly of Na3V2(PO4)3 nanoparticles confined in a one-dimensional carbon sheath for enhanced sodium-ion cathode properties.
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 Na3 V2 (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 Na3 V2 (PO4 )3 within a carbon sheath. The mesostructure comprising NASICON-type Na3 V2 (PO4 )3 and carbon give a short sodium-ion transport pass and an efficient electron conduction pass. Electrochemical properties of NASICON-type Na3 V2 (PO4 )3 are improved on the basis of one-dimensional nanostructures designed in the present study.
authors.affiliation: Energy Technology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8568 (Japan), Fax: (+81) 29-861-3489.
authors.forename: Satoshi
authors.initials: S
authors.lastname: Kajiyama
authors.forename: Jun
authors.initials: J
authors.lastname: Kikkawa
authors.forename: Junichi
authors.initials: J
authors.lastname: Hoshino
authors.forename: Masashi
authors.initials: M
authors.lastname: Okubo
authors.forename: Eiji
authors.initials: E
authors.lastname: Hosono
keywords: batteries; electrochemistry; nanostructures; nanowires; sodium ions