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Binder- Free Supercapacitor Electrode Based on Spray Pyrolyzed Tin Dioxide Doped with Samarium (Sm-SnO2)

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Abstract:

In this study, SnO2 was successfully synthesized using spray pyrolysis method. Knowing that lanthanides has the capability to enhance the performance of metal oxides in supercapacitor application, Samarium was loaded to Tin Dioxide (SnO2) at different percent weight concentrations (0.5%, 1%, 3% 5%). XRD diffractograms shows the formation of tetragonal rutile structure with prominent peaks at 26.6, 34.08, 51.94 that corresponds to (110), (101), and (211) respectively and no additional peaks was detected with the incorporation Sm3+ ions which. The data obtained from Energy Dispersive X-ray Spectroscopy confirm the presence of Sm on the spray pyrolyzed SnO2. Scanning electron micrograph revealed that the increase in loading of Sm changes the morphology of the samples from 1D to 2D structures. Faradaic reactions indicated by the oxidation and reduction peaks were monitored using cyclic voltammetry in 1M KOH electrolyte. The specific capacitances were determined by analyzing the galvanostatic charge discharge profile of each sample. SnO2 with 0.5% Sm yield the the highest specific capacitance, energy density and power density of 54.55 F/g, 1.60 WHr/kg, and 230 W/kg respectively. The results from this research offers a valuable information in synthesizing binder-free electrode and modifying its properties by incorporating samarium. These electrodes can be used for advanced applications such as electrochemical energy storage device, electrochemical sensors, and electrocatalytic applications.

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Journal of Nano Research Vol. 92 View Preview

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Periodical:

Journal of Nano Research (Volume 92)

Pages:

97-102

DOI:

https://doi.org/10.4028/p-EG6BjX

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Online since:

March 2026

Authors:

Lance Patrick M. Buizon*, Hydralyn T. Gammad, Blessie A. Basilia, Menandro C. Marquez

Keywords:

Binder-Free, Electrode, Samarium, Spray Pyrolysis, Supercapacitor, TiN Dioxide

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© 2026 Trans Tech Publications Ltd. All Rights Reserved

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