Journal
JOURNAL OF POWER SOURCES
Volume 242, Issue -, Pages 597-603Publisher
ELSEVIER
DOI: 10.1016/j.jpowsour.2013.05.132
Keywords
Sodium titanate nanotube; Graphite; Sodium-ion capacitors; Sodium-ion-conductive channel; Electrochemical capacitors
Funding
- National Basic Research Program of China [2011CB935702]
- National Natural Science Foundation of China [21173206]
- Scientific Research Foundation for the Returned Overseas Chinese Scholars and State Education Ministry (SRF for ROCS, SEM)
- Hundred Talents Program of Chinese Academy of Sciences
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Sodium titanate nanotube (Na-TNT) sample has been prepared by a hydrothermal method using TiO2 and NaOH as starting materials and then calcined at 400 degrees C in air. X-ray diffraction and N-2 adsorption-desorption tests have been employed to characterize its crystal and pore structure. The Na-TNT can be used as the negative electrode for electric energy storage devices using Na+-based organic electrolytes. The charge storage mechanism at the Na-TNT negative electrode has been investigated by electrochemical tests (galvanostatic charge-discharge, cyclic voltammetry, etc.), ex-situ XRD and HRTEM measurements. The electric energy storage devices of Na-TNT/graphite have been constructed and the influence of graphite/Na-TNT mass ratio on their performance has been studied. (C) 2013 Elsevier B.V. All rights reserved.
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