journal article·2025-05-28

Nano Aerogel-Based VIS-NIR Switchable Electrochromic Supercapacitor: Energy Storage and Heat-Shielding Device

Love Bansal, Franziska Lübkemann-Warwas, Bhumika Sahu, Tanushree Ghosh, Suchita Kandpal, Chanchal Rani, Deb Kumar Rath, Lasse Prawitt, Christoph Wesemann, Nadja C. Bigall, Rajesh Kumar

ACS Applied Materials & Interfaces· Volume 17· Issue 21
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Abstract

Power-efficient electrochromic devices that can exhibit multifunctional applications, especially in the areas of energy storage and savings, are increasingly in demand. Here, an inorganic–organic electrochromic smart window has been designed in which a self-supporting aerogel-type network of tin-doped indium oxide (a-ITO) nanoparticles was doped to enable applications in supercapacitive energy storage. The devices based on poly(3-hexylthiophene-2,5-diyl) (doped with incorporated a-ITO) and viologen exhibit bias-induced color modulation in the visible and infrared range. This function can be employed to prevent the transmission of latter radiation to maintain a temperature difference on the two sides of the device when it is turned ON with a bias voltage of 1.6 V. The device exhibits an electrochromic supercapacitor property with a maximum coloration efficiency of 966 cm 2 /C with a switching time of only 0.5 s, color contrast of 61%, and high specific capacitance of 17 F/g. Potential applications of the device in temperature shielding are discussed, and a maximum cooling efficiency of 32% is demonstrated. Overall, a recipe is developed to design energy-storing and energy-saving multicolor-switchable smart windows for application in designing energy-efficient smart windows/buildings.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Transition Metal Oxide Nanomaterials · Supercapacitor Materials and Fabrication · Gas Sensing Nanomaterials and Sensors

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Materials and Device Laboratory, Department of Physics

Indian Institute of Technology Indore

Institute of Physical Chemistry and Electrochemistry (PCI)

Gottfried Wilhelm Leibniz University Hannover

Cluster of Excellence PhoenixD Photonics, Optics and Engineering−Innovation Across Disciplines)

Leibniz University Hannover

Department of Mechanical and Industrial Engineering, University of Toronto, 5 King’s College Road, Toronto, Ontario M5S 3G8, Canada

Department of Chemical and Biomolecular Engineering

Cornell University

Department of Chemistry

University of Michigan

Institute of Physical Chemistry, University of Hamburg, Grindelallee 117, D-20146 Hamburg, Germany

Cluster of Excellence CUI: Advanced Imaging of Matter

University of Hamburg

Centre for Advanced Electronics, Indian Institute of Technology Indore, Simrol-453552, India

Funding

Council of Scientific and Industrial Research, India · Science and Engineering Research Board · Indian Institute of Technology Indore · Deutsche Forschungsgemeinschaft · Indo-German Science and Technology Centre · Ministry of Education, India

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