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3D Interconnected Carbon Fiber Network‐Enabled Ultralong Life Na 3 V 2 (PO 4 ) 3 @Carbon Paper Cathode for Sodium‐Ion Batteries
Author(s) -
Kretschmer Katja,
Sun Bing,
Zhang Jinqiang,
Xie Xiuqiang,
Liu Hao,
Wang Guoxiu
Publication year - 2017
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201603318
Subject(s) - cathode , materials science , electrochemistry , energy storage , carbon fibers , fast ion conductor , chemical engineering , sodium , ion , thermal stability , electrode , nanotechnology , electrolyte , composite material , electrical engineering , chemistry , metallurgy , power (physics) , physics , organic chemistry , quantum mechanics , composite number , engineering
Sodium‐ion batteries (NIBs) are an emerging technology, which can meet increasing demands for large‐scale energy storage. One of the most promising cathode material candidates for sodium‐ion batteries is Na 3 V 2 (PO 4 ) 3 due to its high capacity, thermal stability, and sodium (Na) Superionic Conductor 3D (NASICON)‐type framework. In this work, the authors have significantly improved electrochemical performance and cycling stability of Na 3 V 2 (PO 4 ) 3 by introducing a 3D interconnected conductive network in the form of carbon fiber derived from ordinary paper towel. The free‐standing Na 3 V 2 (PO 4 ) 3 ‐carbon paper (Na 3 V 2 (PO 4 ) 3 @CP) hybrid electrodes do not require a metallic current collector, polymeric binder, or conducting additives to function as a cathode material in an NIB system. The Na 3 V 2 (PO 4 ) 3 @CP cathode demonstrates extraordinary long term cycling stability for 30 000 deep charge–discharge cycles at a current density of 2.5 mA cm −2 . Such outstanding cycling stability can meet the stringent requirements for renewable energy storage.