In situ infrared spectroscopic characterization of a bismuth–ethanol interface

Romann, Tavo; Väärtnõu, Mart; Jänes, Alar; Lust, Enn

doi:10.1016/j.electacta.2008.06.012

Cited by 9 publications

(2 citation statements)

References 28 publications

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“…The features of the wet cake of the organic/inorganic nanocomposites include functioning as a white medium with a paper-like whiteness, an ionic conductor and a structure support material. The above-described bismuthyl perchlorate is electroreduced in an acidic aqueous solution and becomes the black metal bismuth (eq or eq ). As for the previously reported electrochromic systems using bismuth species, studies have been exclusively devoted to the one that used the redox reaction of Bi 3+ ions as indicated in eq − , .…”

Section: Methodsmentioning

confidence: 99%

Bismuth Electrochromic Device with High Paper-Like Quality and High Performances

Nakashima

Ebine

Shishikura

et al. 2010

ACS Appl. Mater. Interfaces

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An electrochromic-type electronic paper was prepared using nanocomposites that consisted of silica nanoparticles (silica 60 wt %) and polyamide pulp. Its light scattering, ion transport, and aqueous electrolyte retention characteristics were examined. As a result, the shape of the nanocomposites was completely self-standing, though it could be impregnated with about nine times as much water on a weight basis. Moreover, its light scattering property was extremely similar to paper. Because of the impregnation of a large amount of water, the ion transport property of the nanocomposites was the same as that of the electrolyte solution without the nanocomposites. The nanocomposites was impregnated using an aqueous solution in which bismuthyl perchlorate (redox species), copper perchlorate, perchloric acid, sodium perchlorate, hydroquinone (electron mediator) and 2-buthyne-1,4-diol (leveling agent) were dissolved. The electronic paper was then prepared by sandwiching the nanocomposites between an indium-tin-oxide transparent electrode and a copper sheet. This electronic paper utilizes the reversible codeposition reaction of black Bi-Cu from bismuthyl perchlorate and copper(II) ions. The characteristics of this electronic paper were examined, and excellent characteristics with a white reflectivity of 65%, black reflectivity of 6.4%, contrast ratio of 10:1, operating life of over 1 × 10 6 cycles and open-circuit memory of at least 1 month were obtained. In addition, its driving voltage was 1.2 V, and the write time was 500 ms.

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Section: Methodsmentioning

confidence: 99%

Bismuth Electrochromic Device with High Paper-Like Quality and High Performances

Nakashima

Ebine

Shishikura

et al. 2010

ACS Appl. Mater. Interfaces

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“…It is possible that invoking non-traditional methods can give some new results. So, the IR studies for Bi|solution interfaces have been initiated [39] and the quantum chemical calculations for Cd|solu-tion and Bi|solution interface are also in progress.…”

Section: Parametermentioning

confidence: 99%