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\begin{document}

\title{Charge Storage Performance of Structurally Flexible Hybrid Ionic Liquid
Electrolyte in Supercapacitor}



\author[1]{Gaurav Tatrari}%
\author[1]{Sourav Bhowmick}%
\author[1]{Andrei Filippov}%
\author[2]{Rong An}%
\author[1]{Faiz Ullah Shah}%
\affil[1]{Lulea tekniska universitet}%
\affil[2]{Nanjing University of Science and Technology Herbert Gleiter Institute of Nanoscience}%


\vspace{-1em}



  
  \date{June 08, 2024}


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\selectlanguage{english}
\begin{abstract}
The electrochemical and charge storage performance of a fluorine-free
structurally flexible pyrrolidinium-based ionic liquid hybrid
electrolyte (HILE) in a symmetric graphite-based supercapacitor is
thoroughly investigated. The HILE revealed thermal decomposition at 270
\selectlanguage{ngerman}ºC, a glass transition (T \textsubscript{g}) temperature of \selectlanguage{english}-73 oC, and
ionic conductivity of 0.16 mS cm \selectlanguage{english}\textsuperscript{-1} at 30 oC. A
systematic variable temperature \textsuperscript{1}H and
\textsuperscript{31}P NMR spectroscopy and diffusometry, cyclic
voltammetry (CV), electrochemical impedance spectroscopy (EIS), and
galvanostatic charge-discharge (GCD) are employed. HILE-based
supercapacitor demonstrated a notable specific capacitance of 186 Fg
\selectlanguage{english}\textsuperscript{-1} at a scan rate of 1 mVs \selectlanguage{english}\textsuperscript{-1} and a
specific capacitance of 122 Fg \selectlanguage{english}\textsuperscript{-1} at a current density
of 0.5 Ag \selectlanguage{english}\textsuperscript{-1}. The maximum energy density of 49 Wh kg
\selectlanguage{english}\textsuperscript{-1}, a power density of 370 W kg \selectlanguage{english}\textsuperscript{-1}
at a current density of 0.5 A g \selectlanguage{english}\textsuperscript{-1} and a potential
window of 4V were obtained. HILE displayed a promising electrochemical
performance over a wide potential window of 4V and temperature range
(\selectlanguage{english}-20 oC to 90 oC) in a symmetric graphite supercapacitor.%
\end{abstract}\selectlanguage{ngerman}%



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\verb`Manuscript_HILE.docx`  available at \url{https://authorea.com/users/640640/articles/655407-charge-storage-performance-of-structurally-flexible-hybrid-ionic-liquid-electrolyte-in-supercapacitor}

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