ELECTROCHROMIC ASPECTS OF PHOSPHOTUNGSTIC ACID

被引：11

作者：

MAHESWARI, SP

HABIB, MA

机构：

[1] GM Research Lab, United States

来源：

SOLAR ENERGY MATERIALS | 1988年 / 18卷 / 1-2期

关键词：

Acids--Inorganic - Chemical Reactions--Redox - Electrochemistry - Phosphorus Compounds--Evaluation - Tungsten Compounds--Evaluation;

D O I：

10.1016/0165-1633(88)90047-0

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

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.

引用

页码：75 / 82

页数：8

共 15 条

[11] HETEROPOLY BLUES .2. REDUCTION OF 2.18-TUNGSTATES [J].