Variable emissivity infrared electrochromic device based on polyaniline conducting polymer

Li, Hua; Xie, Kai; Pan, Yi; Yao, Meng; Cong, Xin

doi:10.1016/j.synthmet.2009.02.028

Cited by 62 publications

(23 citation statements)

References 7 publications

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“…These values are measured both with emissometer and industry‐standard calorimetric thermal vacuum techniques. It is noted that these are the highest reported Δε values for any functional V‐E material, to the best of published knowledge, this is in spite of attempts to use our prior work as a basis to improve on emittance performance of thin film V‐E materials, for example, as done by Li et al Space durability over more than 7 months under active electrochromic and temperature cycling in space vacuum (<10 −5 Pa) is demonstrated with minimal degradation. Durability to VUV, atomic‐O exposure, micrometeoroids, and solar wind is also demonstrated.…”

Section: Discussionmentioning

confidence: 88%

Variable‐emittance infrared electrochromic skins combining unique conducting polymers, ionic liquid electrolytes, microporous polymer membranes, and semiconductor/polymer coatings, for spacecraft thermal control

Chandrasekhar

Zay

Lawrence

et al. 2014

J of Applied Polymer Sci

117

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Variable emittance (e) is a property vital for the increasing needs in thermal control of future microspacecraft. This article describes fabrication, function, and performance of thin-film, flexible, variable-emittance (V-E) electrochromic skins that use a conducting polymer/-Au/-microporous membrane (CP/Au/mP) base, and a new, unique ionic liquid electrolyte (IonEl). Poly(aniline-codiphenyl amine) with a long-chain polymeric dopant is used as the CP. A unique, patented device design yields no barrier between the active, electrochromic CP surface and the external environment, except for a thin, infrared-transparent semiconductor/polymer film that lowers solar absorptance [a(s)] and protects from atomic-O/far-UV. Use of the IonEl requires special activation methods. Data presented show tailorable e variations from 0.19 to 0.90, De values of >0.50 (which is the highest reported thus far for any functional V-E material, to our knowledge), a(s) < 0.35, and nearly indefinite cyclability. Extended space durability testing, including calorimetric thermal vacuum and continuous light/dark cycling over >7 months under space conditions (<10 25 Pa vacuum, far-UV), show excellent durability. Other data show resistance to solar wind, atomic-O, electrostatic discharge, and micrometeoroids. These lightweight, inexpensive, advanced polymeric materials represent the only technology that can work with micro-(<20 kg) and nano-(<2 kg) spacecraft, thus eventually allowing for much greater flexibility in their design and potentially "democratizing" the entire space industry, for example, allowing small firms to launch their own, dedicated satellites. V C 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40850.

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Section: Discussionmentioning

confidence: 88%

Variable‐emittance infrared electrochromic skins combining unique conducting polymers, ionic liquid electrolytes, microporous polymer membranes, and semiconductor/polymer coatings, for spacecraft thermal control

Chandrasekhar

Zay

Lawrence

et al. 2014

J of Applied Polymer Sci

117

View full text Add to dashboard Cite

show abstract

“…In recent years, conducting polymers (CPs) have found increasing importance in the fabrication of nanodevices [1] and chemical sensors [2] because of their metal-like conductive nature. The CPs based on aniline derivatives have been extensively studied [3].…”

Section: Introductionmentioning

confidence: 99%

Electrodeposited gold nanostructures at Nafion–poly(o-phenylenediamine) modified electrode and its electrocatalytic application

Rameshkumar¹,

Ramaraj²

2015

Journal of Electroanalytical Chemistry

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“…Owing to these unique thermal control applications, variableemissivity materials have attracted much attention and are of great significance for national defence and energy conservation. However, the variable-emissivity materials in use now must be electrified or need some accessories to be installed [5][6][7][8][9][10]. Then, they are inapplicable in several cases, which limits their applications.…”

Section: Introductionmentioning

confidence: 99%

Infrared emissivity of Sr doped lanthanum manganites in coating form

Shen

et al. 2011

Journal of Alloys and Compounds

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Variable emissivity infrared electrochromic device based on polyaniline conducting polymer

Cited by 62 publications

References 7 publications

Variable‐emittance infrared electrochromic skins combining unique conducting polymers, ionic liquid electrolytes, microporous polymer membranes, and semiconductor/polymer coatings, for spacecraft thermal control

Variable‐emittance infrared electrochromic skins combining unique conducting polymers, ionic liquid electrolytes, microporous polymer membranes, and semiconductor/polymer coatings, for spacecraft thermal control

Electrodeposited gold nanostructures at Nafion–poly(o-phenylenediamine) modified electrode and its electrocatalytic application

Infrared emissivity of Sr doped lanthanum manganites in coating form

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