Electrochemical and structural properties of SnO{sub 2} and Sb:SnO{sub 2} transparent electrodes with mixed electronically conductive and ion-storage characteristics

Book · Sat Dec 31 04:00:00 EST 1994

OSTI ID:194825

Orel, B; Stangar, U L; Svegl, F ^[1]

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1. National Inst. of Chemistry, Ljubljana (Slovenia)

Sb:SnO{sub 2} films (body resistance 1.2 {times} 10{sup {minus}2} {Omega} cm) which were deposited by dip-coating technique via the sol-gel route using SnCl{sub 4}{center_dot}5H{sub 2}O and SbCl{sub 3} precursors have been found to exhibit mixed electronic conductivity and ion-storage characteristics. The Li{sup +} and H{sup +} ion (de)insertion properties of the films were determined from the cyclic voltammetric (CV) measurements from solvents containing LiClO{sub 4} (0.1 M) in acetonitrile or water, LiOH (0.1 M) and HClO{sub 4} (0.001--0.01 M). The particle grain size of Sb:SnO{sub 2} and SnO{sub 2} films has been determined from the XRD measurements and was found to be larger for undoped (55--71 {angstrom}) than for the Sb doped films (46--58 {angstrom}). The Sb:SnO{sub 2} films exhibit effective charges per film thickness (Q{sub (de)int}/d) in the range 0.01--0.02 mC/cm{sup 2}nm and outrange by about 3 times the Q/d values obtained for undoped films. Combining the CV results with the in-situ spectroelectrochemical measurements it was concluded that the intercalation process of Li{sup +} ions in Sb:SnO{sub 2} films is governed by the layer charging of the inner grain surfaces which overwhelms the underlaying redox changes involving the Sn{sup 4+} ions. The performance of the transmissive electrochromic device made of WO{sub 3}/H{sub 3}PO{sub 4}-polyvinyl alcohol (PVA)/Sb:SnO{sub 2} was tested and the results presented and discussed.

• OSTI ID: 194825
• Report Number(s): CONF-9404167--; ISBN 0-8194-1564-2
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
ANTIMONY OXIDES
ELECTROCHEMISTRY
ELECTROCHROMISM
EXPERIMENTAL DATA
GLAZING MATERIALS
MICROSTRUCTURE
PERFORMANCE TESTING
TIN OXIDES
TUNGSTEN OXIDES
WINDOWS