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Low-temperature preparation of pure-phase Ce2S3 by sulfurization of cerium carbonate and their novel electrochemical properties

X. CHENG1, B. T. HOU1, X. L. WANG1, W. S. YU1, G. X. LIU1, X. T. DONG1, J. X. WANG1,*

Affiliation

  1. School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun 130022, China

Abstract

Anode materials play a key role in the development of rechargeable lithium-ion batteries. Herein, we rationally designed and successfully fabricated pure-phase Ce2S3 via a facile sulfurization method and studied systematically their phase structure, morphology and electrochemical properties. The Ce2S3 prepared at 950 °C has coulombic efficiency of 99.7% after 1000 cycles at current density of 100 mA·g-1 and the discharge capacity of 60 mAh·g-1 at a high current density of 1000 mA·g-1, demonstrating its exceptional cycling property and a long cycle-life, which is attributed to particular energy band structure of Rare Earth sulfides and 4f electronic structure of cerium.

Keywords

Rare earth sulfides, Sulfurization method, Lithium-ion batteries.

Citation

X. CHENG, B. T. HOU, X. L. WANG, W. S. YU, G. X. LIU, X. T. DONG, J. X. WANG, Low-temperature preparation of pure-phase Ce2S3 by sulfurization of cerium carbonate and their novel electrochemical properties, Optoelectronics and Advanced Materials - Rapid Communications, 15, 7-8, July-August 2021, pp.381-385 (2021).

Submitted at: Aug. 26, 2020

Accepted at: Aug. 16, 2021