TY - JOUR

T1 - Fluorane sensitive supercapacitive microcrystalline MoO3

T2 - dual application in energy storage and HF detection

AU - Bansal, Love

AU - Ghosh, Tanushree

AU - Kandpal, Suchita

AU - Rani, Chanchal

AU - Sahu, Bhumika

AU - Rath, Deb Kumar

AU - Wesemann, Christoph

AU - Chhoker, Sandeep

AU - Bigall, Nadja C.

AU - Kumar, Rajesh

N1 - Funding Information: The authors acknowledge funding received from the Science and Engineering Research Board (SERB), Govt. of India (Grants CRG/2019/000371 and CRG/2022/002787) and the Indo-German Science and Technology Centre (IGSTC/SING-2022/40/2021-22/336). Facilities received from SIC (IIT Indore) and Department of Science and Technology (DST), Govt. of India, under FIST scheme (Grant SR/FST/PSI-225/2016) is highly acknowledged. Author L. B. acknowledges the Council of Scientific and Industrial Research (CSIR) for financial assistance (File 09/1022(12309)/2021-EMR-I). Author B. S. acknowledges IIT Indore for financial assistance. Authors S. K. and D. K. R. acknowledge UGC (ref. 1304-JUNE-2018-513215, and ref. 211610006497), Govt. of India, for providing fellowship. Author C. R. acknowledges DST (File DST/INSPIRE/03/2019/002160/IF190314) for providing fellowship. The authors acknowledge Dr Somaditya Sen for providing the XRD facility. Authors thank Mr. Prashant Gupta and Dr. Nitin Upadhyay for technical assistance. This work received funding from the German Research Foundation (Deutsche Forschungsgemeinschaft, DFG) under Germany's excellence strategy within the cluster of excellence PhoenixD (EXC 2122, project ID 390833453) and the grant BI 1708/4-3. The authors thank the Laboratory of Nano and Quantum Engineering (LNQE) for providing the TEM facility.

PY - 2023/8/24

Y1 - 2023/8/24

N2 - Exploring materials and device paradigms for multifunctional electrochemical applications such as supercapacitors and sensing makes materials more suitable for real-life applications. In this study, microcrystalline MoO3 powder has been synthesized using a simple sol-gel method, and its suitability for energy storage devices and HF sensing performance has been studied. The MoO3 microcrystallites, well-characterized using electron microscopy, X-ray diffraction, and Raman spectroscopy, have been tested for HF sensitivity on a glassy carbon electrode as well as on a carbon cloth electrode. Similarly, a solid-state prototype asymmetric supercapacitor has been demonstrated that displays its charge storage capabilities. The specific capacitance of MoO3 increases linearly with the increase of HF concentration. Additionally, the sensing performance of MoO3 can be seen by monitoring changes in current passing through the electrode in the presence of HF. High stability with good repeatability was displayed. In situ Raman spectroscopy, recorded during the charging and discharging process, has been used to understand the charge storage mechanism. A high sensitivity of 6656 mF mM−1 g−1 with a low limit of detection of 1.2 μM was observed, which makes this material suitable for sensing as well as charge storage.

AB - Exploring materials and device paradigms for multifunctional electrochemical applications such as supercapacitors and sensing makes materials more suitable for real-life applications. In this study, microcrystalline MoO3 powder has been synthesized using a simple sol-gel method, and its suitability for energy storage devices and HF sensing performance has been studied. The MoO3 microcrystallites, well-characterized using electron microscopy, X-ray diffraction, and Raman spectroscopy, have been tested for HF sensitivity on a glassy carbon electrode as well as on a carbon cloth electrode. Similarly, a solid-state prototype asymmetric supercapacitor has been demonstrated that displays its charge storage capabilities. The specific capacitance of MoO3 increases linearly with the increase of HF concentration. Additionally, the sensing performance of MoO3 can be seen by monitoring changes in current passing through the electrode in the presence of HF. High stability with good repeatability was displayed. In situ Raman spectroscopy, recorded during the charging and discharging process, has been used to understand the charge storage mechanism. A high sensitivity of 6656 mF mM−1 g−1 with a low limit of detection of 1.2 μM was observed, which makes this material suitable for sensing as well as charge storage.

UR - http://www.scopus.com/inward/record.url?scp=85172759587&partnerID=8YFLogxK

U2 - 10.1039/d3ma00357d

DO - 10.1039/d3ma00357d

M3 - Article

AN - SCOPUS:85172759587

VL - 4

SP - 4775

EP - 4783

JO - Materials Advances

JF - Materials Advances

IS - 20

ER -