Electrochromic aspects of phosphotungstic acid

Shyam P. Maheswari; M. Ahsan Habib

doi:10.1016/0165-1633(88)90047-0

Electrochromic aspects of phosphotungstic acid

Shyam P. Maheswari^*
, M. Ahsan Habib

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

The electrochromic behavior of phosphotungstic acid (PWA) was investigated. A fluorine-doped tin oxide coated glass substrate was used for this work. In-situ measurements of optical absorbance under controlled electrochemical conditions showed that phosphotungstic acid can be colored and bleached by electrochemical oxidation and reduction. The coloration efficiency of PWA in an aqueous solution was found to be 16.8 cm²/C. This is lower than that observed with WO₃ films presumably due to continuous dissolution of the reduced species. The diffusion coefficient of phosphotungstate anions [PW₁₂O₄₀]^-3 was found to be 2.8×10^-5 cm²/s. The results indicate that PWA has desirable properties for use as an electrochromic material.

Original language	English
Pages (from-to)	75-82
Number of pages	8
Journal	Solar Energy Materials
Volume	18
Issue number	1-2
DOIs	https://doi.org/10.1016/0165-1633(88)90047-0
State	Published - Dec 1988
Externally published	Yes

ASJC Scopus subject areas

General Engineering

Access to Document

10.1016/0165-1633(88)90047-0

Cite this

@article{8e94f1da25444047afcd8c6cc9280e9e,

title = "Electrochromic aspects of phosphotungstic acid",

abstract = "The electrochromic behavior of phosphotungstic acid (PWA) was investigated. A fluorine-doped tin oxide coated glass substrate was used for this work. In-situ measurements of optical absorbance under controlled electrochemical conditions showed that phosphotungstic acid can be colored and bleached by electrochemical oxidation and reduction. The coloration efficiency of PWA in an aqueous solution was found to be 16.8 cm2/C. This is lower than that observed with WO3 films presumably due to continuous dissolution of the reduced species. The diffusion coefficient of phosphotungstate anions [PW12O40]-3 was found to be 2.8×10-5 cm2/s. The results indicate that PWA has desirable properties for use as an electrochromic material.",

author = "Maheswari, \{Shyam P.\} and Habib, \{M. Ahsan\}",

year = "1988",

month = dec,

doi = "10.1016/0165-1633(88)90047-0",

language = "English",

volume = "18",

pages = "75--82",

journal = "Solar Energy Materials",

issn = "0165-1633",

publisher = "Elsevier B.V.",

number = "1-2",

}

TY - JOUR

T1 - Electrochromic aspects of phosphotungstic acid

AU - Maheswari, Shyam P.

AU - Habib, M. Ahsan

PY - 1988/12

Y1 - 1988/12

N2 - The electrochromic behavior of phosphotungstic acid (PWA) was investigated. A fluorine-doped tin oxide coated glass substrate was used for this work. In-situ measurements of optical absorbance under controlled electrochemical conditions showed that phosphotungstic acid can be colored and bleached by electrochemical oxidation and reduction. The coloration efficiency of PWA in an aqueous solution was found to be 16.8 cm2/C. This is lower than that observed with WO3 films presumably due to continuous dissolution of the reduced species. The diffusion coefficient of phosphotungstate anions [PW12O40]-3 was found to be 2.8×10-5 cm2/s. The results indicate that PWA has desirable properties for use as an electrochromic material.

AB - The electrochromic behavior of phosphotungstic acid (PWA) was investigated. A fluorine-doped tin oxide coated glass substrate was used for this work. In-situ measurements of optical absorbance under controlled electrochemical conditions showed that phosphotungstic acid can be colored and bleached by electrochemical oxidation and reduction. The coloration efficiency of PWA in an aqueous solution was found to be 16.8 cm2/C. This is lower than that observed with WO3 films presumably due to continuous dissolution of the reduced species. The diffusion coefficient of phosphotungstate anions [PW12O40]-3 was found to be 2.8×10-5 cm2/s. The results indicate that PWA has desirable properties for use as an electrochromic material.

UR - https://www.scopus.com/pages/publications/0024132667

U2 - 10.1016/0165-1633(88)90047-0

DO - 10.1016/0165-1633(88)90047-0

M3 - Article

AN - SCOPUS:0024132667

SN - 0165-1633

VL - 18

SP - 75

EP - 82

JO - Solar Energy Materials

JF - Solar Energy Materials

IS - 1-2

ER -

Electrochromic aspects of phosphotungstic acid

Abstract

ASJC Scopus subject areas

Access to Document

Fingerprint

Cite this