TY - JOUR

T1 - Metal oxide-mixed polymer-based hybrid electrochromic supercapacitor

T2 - improved efficiency and dual band switching

AU - Sahu, Bhumika

AU - Bansal, Love

AU - Ghosh, Tanushree

AU - Kandpal, Suchita

AU - Rath, Deb Kumar

AU - Rani, Chanchal

AU - Wesemann, Christoph

AU - Bigall, Nadja C.

AU - Kumar, Rajesh

N1 - Funding Information: The authors thank the Anusandhan National Research Foundation/Science and Engineering Research Board (SERB), Government of India (Grant CRG/2019/000371; CRG/2022/2787), and IGSTC (Grant No. IGSTC/SING2022/40/2021-22/336) for financial support. B S acknowledges IIT Indore for providing fellowship. L B and S K acknowledge UGC (Ref. 1304-JUNE-2018-513215) and CSIR (09/1022(12309)/2021-EMR-I, Govt. of India, for providing fellowships. D K R acknowledges the Prime Minister’s Research Fellowship (PMRF ID: 2103355), Ministry of Education, Govt. of India, for providing fellowship. The Department of Science and Technology (DST), Government of India, provided the Raman and computational facilities under the FIST initiative (Grant SR/FST/PSI225/2016) and are highly acknowledged. Technical assistance by Dr N Upadhyay and Mr Prashant Gupta is also acknowledged. The authors also acknowledge Ms. Nikita Ahlawat, Mr. Shivansh Raj Pandey, and Mr. Md. Ahmed Shahid for their help. The authors acknowledge the Laboratory of Nano and Quantum Engineering (LNQE) for providing the TEM facilities. The authors also thank the German Research Foundation (Deutsche Forschungsgemeinschaft, DFG) for providing funds within the PhoenixD cluster of excellence (EXC 2122, Project ID 390833453), Cluster of Excellence CUI: Advanced Imaging of Matter (EXC 2056, Project ID 390715994) and the Grant BI 1708/4-3.

PY - 2024/3/21

Y1 - 2024/3/21

N2 - The inclusion of charge storage properties in electrochromic devices (ECDs) has gained much interest and has evolved into a promising emerging energy-related field due to multifunctional smart device applications. Here, an organic-inorganic solid-state asymmetric electrochromic supercapacitor device (ESCD) containing nano-CoTiO3-mixed poly-3-hexylthiophene and WO3 as two electrodes has been designed to study electrochromic and supercapacitor properties. The electrochemical properties of CoTiO3 show a pseudocapacitive-type charge storage capability, which has been utilized to enhance the electrochromic performance of the ESCD with additional charge storage ability. The device shows charge storage properties with fast charging and slow discharging, giving very high coulombic efficiency with a specific capacitance of 6.4 mF cm−2 at 0.2 mA cm−2 current density. The device shows excellent electrochromic supercapacitive properties with a color contrast of ∼50% and a short switching time of ∼1 s at a 515 nm wavelength with excellent cyclic stability. The device exhibits the capability to cut near infrared wavelength (700 nm and 850 nm) and has a potential application as a heat filtering device. Thus, the addition of pseudocapacitive-type materials in ECDs enhances the capacitive performance along with electrochromic properties, which makes ECDs more suitable for real life applications.

AB - The inclusion of charge storage properties in electrochromic devices (ECDs) has gained much interest and has evolved into a promising emerging energy-related field due to multifunctional smart device applications. Here, an organic-inorganic solid-state asymmetric electrochromic supercapacitor device (ESCD) containing nano-CoTiO3-mixed poly-3-hexylthiophene and WO3 as two electrodes has been designed to study electrochromic and supercapacitor properties. The electrochemical properties of CoTiO3 show a pseudocapacitive-type charge storage capability, which has been utilized to enhance the electrochromic performance of the ESCD with additional charge storage ability. The device shows charge storage properties with fast charging and slow discharging, giving very high coulombic efficiency with a specific capacitance of 6.4 mF cm−2 at 0.2 mA cm−2 current density. The device shows excellent electrochromic supercapacitive properties with a color contrast of ∼50% and a short switching time of ∼1 s at a 515 nm wavelength with excellent cyclic stability. The device exhibits the capability to cut near infrared wavelength (700 nm and 850 nm) and has a potential application as a heat filtering device. Thus, the addition of pseudocapacitive-type materials in ECDs enhances the capacitive performance along with electrochromic properties, which makes ECDs more suitable for real life applications.

KW - electrochromic

KW - multifunctional device

KW - nano-oxides

KW - smart windows

UR - http://www.scopus.com/inward/record.url?scp=85188516488&partnerID=8YFLogxK

U2 - 10.1088/1361-6463/ad2dba

DO - 10.1088/1361-6463/ad2dba

M3 - Article

AN - SCOPUS:85188516488

VL - 57

JO - Journal of Physics D: Applied Physics

JF - Journal of Physics D: Applied Physics

SN - 0022-3727

IS - 24

M1 - 245110

ER -