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Assembly of Na 3 V 2 (PO 4 ) 3 Nanoparticles Confined in a One‐Dimensional Carbon Sheath for Enhanced Sodium‐Ion Cathode Properties
Author(s) -
Kajiyama Satoshi,
Kikkawa Jun,
Hoshino Junichi,
Okubo Masashi,
Hosono Eiji
Publication year - 2014
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201403126
Subject(s) - fast ion conductor , materials science , nanoparticle , electrochemistry , cathode , electrode , electrospinning , carbon fibers , nanowire , nanostructure , ion , chemical engineering , nanotechnology , electrolyte , chemistry , composite material , organic chemistry , composite number , engineering , polymer
Structural and morphological control is an effective approach for improvement of electrochemical properties in rechargeable batteries. One‐dimensionally assembled structure composed of NASICON‐type Na 3 V 2 (PO 4 ) 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 Na 3 V 2 (PO 4 ) 3 within a carbon sheath. The mesostructure comprising NASICON‐type Na 3 V 2 (PO 4 ) 3 and carbon give a short sodium‐ion transport pass and an efficient electron conduction pass. Electrochemical properties of NASICON‐type Na 3 V 2 (PO 4 ) 3 are improved on the basis of one‐dimensional nanostructures designed in the present study.