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<p>Graphene-oxide (GO) based composites exhibit promising energy storage properties like adaptable porosity, chemical stability, excellent conductivity, and exceptional ability to charge storage processes. However, the inherent rigid structure of GO limits its use for modern flexible and disposable energy storage devices. This study presents the fabrication of Graphene oxide/tin sulfide-based flexible composites by employing natural fibers (as a binder) extracted from wasted bioresources (banana peels). GO and tin sulfide (SnS) nanoparticles are synthesized by a facile and fast microwave-assisted approach. Furthermore, SnS nanoparticles are deposited electrochemically on fabricated GO-based paper electrodes to enhance their electronic conductivity and energy storage characteristics. Highly flexible paper-based electrodes are characterized by different characterization techniques, i.e., scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, and RAMAN spectroscopy to observe their morphology and chemical bonding. Electrochemical measurements, including Cyclic voltammetry (CV), galvanostatic charge/discharge (GCD), and electrochemical impedance spectroscopy (EIS), are performed to observe the kinetics and capacitive behavior of the electrodes. LC/GO/SnS 2400&#xa0;s exhibit specific capacitance of 68.78&#xa0;F/g at which is greater than GO/LC (30.97&#xa0;F/g). Prepared tertiary composite (GO/LC/SnS) depicts excellent charge-discharge behavior. LC/GO/SnS 2400&#xa0;s reveals power density of 84.6&#xa0;W/kg at 4.57 Wh/kg and also show specific capacitance of 55.4&#xa0;F/g. Superior electrochemical characteristics are indicated by the GO/LC/SnS (2400&#xa0;s) electrode and lower Rs (0.89Ω) and Rct(1.7Ω) values as compared to the binary composite (GO/LC). These composites provide a deep insight into the construction of electrodes with high ionic/electronic conductivity for fast-charging energy storage devices.</p>

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Electrodeposition of fabricated tin sulfide nanoparticles on graphene oxide and natural fibers based robust freestanding electrodes for flexible energy storage devices

  • 期刊论文

  • 发表日期：

    2025年5月9日

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  • Sameen Ilyas,
  • Fatima Kainat,
  • Sadaf Manzoor,
  • I. Sultana,
  • Imran Rafiq,
  • Naushad Ahmad,
  • Shahid M. Ramay,
  • Aamir Razaq

摘要

Graphene-oxide (GO) based composites exhibit promising energy storage properties like adaptable porosity, chemical stability, excellent conductivity, and exceptional ability to charge storage processes. However, the inherent rigid structure of GO limits its use for modern flexible and disposable energy storage devices. This study presents the fabrication of Graphene oxide/tin sulfide-based flexible composites by employing natural fibers (as a binder) extracted from wasted bioresources (banana peels). GO and tin sulfide (SnS) nanoparticles are synthesized by a facile and fast microwave-assisted approach. Furthermore, SnS nanoparticles are deposited electrochemically on fabricated GO-based paper electrodes to enhance their electronic conductivity and energy storage characteristics. Highly flexible paper-based electrodes are characterized by different characterization techniques, i.e., scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, and RAMAN spectroscopy to observe their morphology and chemical bonding. Electrochemical measurements, including Cyclic voltammetry (CV), galvanostatic charge/discharge (GCD), and electrochemical impedance spectroscopy (EIS), are performed to observe the kinetics and capacitive behavior of the electrodes. LC/GO/SnS 2400 s exhibit specific capacitance of 68.78 F/g at which is greater than GO/LC (30.97 F/g). Prepared tertiary composite (GO/LC/SnS) depicts excellent charge-discharge behavior. LC/GO/SnS 2400 s reveals power density of 84.6 W/kg at 4.57 Wh/kg and also show specific capacitance of 55.4 F/g. Superior electrochemical characteristics are indicated by the GO/LC/SnS (2400 s) electrode and lower Rs (0.89Ω) and Rct(1.7Ω) values as compared to the binary composite (GO/LC). These composites provide a deep insight into the construction of electrodes with high ionic/electronic conductivity for fast-charging energy storage devices.