Effect of Rare Earth Doping on Electrochemical Properties of Fe₂O₃ Nanoparticle for Supercapacitor

Abstract:

Fe₂O₃ nanoparticle was prepared by a hydrothermal method, and the influence of rare earth elements (Y³⁺, Nd³⁺ and La³⁺) on the electrochemical performance was studied. The crystal structure and microstructure of the synthesized lithium zinc ferrite were characterized by X-ray diffraction (XRD),scanning electron microscopy (SEM). The results show that the powder is well crystallized and the particles are mostly irregular.The electrochemical property was characterized via cyclic voltammetry (CV) and constant current charge-discharge method. The capacitance of the Fe₂O₃ nanoparticle is 258.3 F/g, 342.7 F/g after doping Y³⁺ ,337.1 F/g after doping Nd³⁺and 331.2 F/g after doping La^{3 +}. The results show that the rare earth elements (Y³⁺, Nd³⁺ and La³⁺) after the specific capacitance has increased, more suitable for super capacitor materials.

• Periodical: Solid State Phenomena (Volume 281)
• Pages: 743-747
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.281.743
• Online since: August 2018
• Authors: Wei Kang Yan, Jian Qiang Bi*, Wei Li Wang
• Keywords: Doping, Fe₂O₃ Nanoparticle, Rare Earth, Specific Capacitance, Supercapacitor

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