Study on electrochemical properties of MOF-derived bi-functional CeCu heterojunction electrode materials

IF 5.8 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Journal of Alloys and Compounds Pub Date : 2025-05-05 DOI:10.1016/j.jallcom.2025.180760

Ping-Ping Sun , Yun-Heng Li , Jia-Qi Li , Lei Yuan , Xin-Ran Zhang , Hai-Yan Liu , Ruo-Hua Guo , Jia-Tong Wang

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Abstract

The precursor method is a technique utilized for synthesizing electrode materials. This study reports the synthesis of a novel CuCe bimetallic organic skeleton using the hydrothermal technique. The compound is represented by the molecular formula [CeCu_1.5 3 L 5 H₂O]8H₂O, where L denotes pyridine-2, 5-dicarboxylic acid. As an electrode material precursor, this structure is calcined at different temperatures to obtain CuO/CeO₂ composites with in-situ composite heterostructures. Density functional theory (DFT) calculations confirm that the electrical conductivity of heterojunction materials is predominantly attributed to a single component. Additionally, the preparation conditions of heterojunction were examined. Notably, the heterojunction electrode materials prepared at 500 ℃ demonstrated superior electrochemical properties in both organic lithium-ion batteries and aqueous supercapacitors.

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mof衍生双功能CeCu异质结电极材料的电化学性能研究

前驱体法是一种用于合成电极材料的技术。本文报道了利用水热技术合成一种新型CuCe双金属有机骨架。化合物的分子式为[CeCu1.5 3 L 5 H2O]8H2O，其中L为吡啶- 2,5 -二羧酸。该结构作为电极材料前驱体，在不同温度下煅烧得到具有原位复合异质结构的CuO/CeO2复合材料。密度泛函理论（DFT）计算证实了异质结材料的导电性主要归因于单一组分。此外，还考察了异质结的制备条件。值得注意的是，在500 ℃下制备的异质结电极材料在有机锂离子电池和水性超级电容器中都表现出优异的电化学性能。

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

Journal of Alloys and Compounds 工程技术-材料科学：综合

CiteScore

11.10

自引率

14.50%

发文量

5146

审稿时长

67 days

期刊介绍： The Journal of Alloys and Compounds is intended to serve as an international medium for the publication of work on solid materials comprising compounds as well as alloys. Its great strength lies in the diversity of discipline which it encompasses, drawing together results from materials science, solid-state chemistry and physics.