Effect of preparation temperature and cycling voltage range on molten salt method prepared SnO(2)

We prepared nano-sized tin (IV) oxide (SnO(2)) via molten-salt technique: heating a mixture of tin tetrachloride, lithium nitrate and lithium chloride at 280 C in air. The powders are characterized by X-ray diffraction and transmission scanning microscopy techniques. The XRD studies showed a structu...

Full description

Saved in:
Bibliographic Details
Published in:Electrochimica acta 2013-09, Vol.106, p.143-148
Main Authors: Reddy, M V, Andreea, Lee Yann Tsyr, Ling, Ang Yen, Hwee, Justin Ng Choon, Lin, Chong Ai, Admas, S, Loh, K P, Mathe, Mkhulu K, Ozoemena, Kenneth I, Chowdari, B V R
Format: Article
Language:English
Subjects:
Cycles
Electric potential
Heating
Lithium
Nanostructure
Reduction
Tin
Voltage
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We prepared nano-sized tin (IV) oxide (SnO(2)) via molten-salt technique: heating a mixture of tin tetrachloride, lithium nitrate and lithium chloride at 280 C in air. The powders are characterized by X-ray diffraction and transmission scanning microscopy techniques. The XRD studies showed a structure similar to tetragonal structure. The cyclic voltammetry studies showed characteristic cathodic peak potentials of reduction of Sn(4+) to Sn metal in the first cathodic scan, and alloying-de-alloying reaction of Sn at ~0.25 and ~0.5Vvs. Li for successive cathodic and anodic scans cycled in the voltage range. 0.005-1.0 V. Galvanostatic cycling studies show that reversible capacities (MSM SnO(2) prepared at 280 C) of 640, 720, 890mAhg(-1) in the voltage range, 0.005-1.0 V, 0.005-1.3 V and 0.005-1.5 V, respectively at a current rate of 100 mAg(-1). We also discussed the effect of particle size and its electrochemical properties in the voltage range, 0.005-1.0V.
ISSN:0013-4686