One-step synthesis of CeO2/rGO composites for high performance lithium-sulfur batteries

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters Pub Date : 2025-07-08 DOI:10.1016/j.matlet.2025.139076

Haijing Zheng , Cen Yao , Nurbia Yusuyun , Mayila Maimitizi , Miaomiao Tian , Liping Zhao

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引用次数: 0

Abstract

Lithium-sulfur batteries (LSBs) have been considered as a promising high-energy rechargeable battery system. However, their practical implementation is hindered by the insulating nature of sulfur, “shuttle effect” and sluggish polysulfides redox kinetics. In this work, CeO₂/rGO composite was synthesized via one step method and subsequently combined with sulfur under liquid-phase condition to form a ternary CeO₂/rGO/S hybrid for LSBs. CeO₂ nanoparticles were uniformly dispersed on the reduced graphene oxide carbon plane, alleviating the polysulfides shuttling due to its strong catalytic and polysulfides adsorption. The synergistic effect of CeO₂ and the conductive rGO network significantly enhanced the electrochemical cycling performance and stability of the sulfur cathode. These results demonstrate that this one step synthesized CeO₂/rGO composite‌ serves as a promising cathode host material for LSBs.

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一步法合成高性能锂硫电池用CeO2/rGO复合材料

锂硫电池被认为是一种很有前途的高能充电电池系统。然而，它们的实际实施受到硫的绝缘性、“穿梭效应”和多硫化物氧化还原动力学缓慢的阻碍。本文通过一步法合成了CeO2/rGO复合材料，并在液相条件下与硫结合，形成了用于lsb的三元CeO2/rGO/S杂化物。CeO2纳米颗粒均匀地分散在还原的氧化石墨烯碳平面上，由于其对多硫化物的强催化和吸附作用，减轻了多硫化物的穿梭。CeO2与导电还原氧化石墨烯网络的协同作用显著增强了硫阴极的电化学循环性能和稳定性。这些结果表明，一步合成的CeO2/rGO复合材料是一种很有前途的lsb阴极主体材料。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Materials Letters 工程技术-材料科学：综合

CiteScore

5.60

自引率

3.30%

发文量

1948

审稿时长

50 days

期刊介绍： Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials. Contributions include, but are not limited to, a variety of topics such as: • Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors • Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart • Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction • Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots. • Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing. • Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic • Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive