FeMoO4/N-doped porous carbon composites as anode material for high-performance lithium-ion batteries

IF 4.5 3区化学 Q1 Chemical Engineering

Journal of Electroanalytical Chemistry Pub Date : 2023-08-15 DOI:10.1016/j.jelechem.2023.117623

Jingjing Xie , Fei Tang , Haifeng Li, Wei Jiang, Zhenglong Yang, Deyang Zhao, Yanbin Xu, Yanfeng Meng, Wenjuan Sun, Ziqiao Jiang

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引用次数: 1

Abstract

FeMoO₄ is a potential anode material for Li-ion batteries due to its high theoretical specific capacity. The factors that restrict the application of FeMoO₄ are the low specific surface area of the material and poor cycle stability caused by the huge volume change during the cycling process of lithium ion insertion and extraction. In this work, N-doped porous carbon was synthesized and composited with FeMoO₄ by a hydrothermal method. The large specific surface area provided by the porous structure can enable sufficient contact of ions/electrons with active sites, thereby enhancing the lithium storage performance and buffering the volume change during lithiation/delithiation, leading to a high cycling stability of the material. After 200 cycles at a current density of 300 mA g⁻¹, the discharge specific capacity of the composite can reach up to 1291.4 mA h g⁻¹.

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FeMoO4/ n掺杂多孔碳复合材料作为高性能锂离子电池负极材料

FeMoO4具有较高的理论比容量，是锂离子电池极具潜力的负极材料。制约FeMoO4应用的因素是材料比表面积小，锂离子插入和提取循环过程中体积变化大，导致循环稳定性差。本文采用水热法制备了n掺杂多孔碳。多孔结构提供的大比表面积可以使离子/电子与活性位点充分接触，从而提高锂存储性能，缓冲锂化/去锂化过程中的体积变化，从而导致材料的高循环稳定性。在300 mA g−1电流密度下循环200次后，复合材料的放电比容量可达1291.4 mA h g−1。

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 Electroanalytical Chemistry Chemical Engineering-General Chemical Engineering

CiteScore

7.50

自引率

6.70%

发文量

912

审稿时长

>12 weeks

期刊介绍： The Journal of Electroanalytical Chemistry is the foremost international journal devoted to the interdisciplinary subject of electrochemistry in all its aspects, theoretical as well as applied. Electrochemistry is a wide ranging area that is in a state of continuous evolution. Rather than compiling a long list of topics covered by the Journal, the editors would like to draw particular attention to the key issues of novelty, topicality and quality. Papers should present new and interesting electrochemical science in a way that is accessible to the reader. The presentation and discussion should be at a level that is consistent with the international status of the Journal. Reports describing the application of well-established techniques to problems that are essentially technical will not be accepted. Similarly, papers that report observations but fail to provide adequate interpretation will be rejected by the Editors. Papers dealing with technical electrochemistry should be submitted to other specialist journals unless the authors can show that their work provides substantially new insights into electrochemical processes.