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随着社会对能源需求的日益增长与环境污染问题的加剧，开发绿色高性能锂离子电池至关重要。氧化钴(CoO)具有高理论比容量，是一种极具潜力的负极材料，但其较差的电子导电性和充放电过程中的体积效应限制了其实际应用。本研究通过金属有机骨架化合物(MOF)衍生法可控制备了碳包覆CoO复合材料(CoO@C)，旨在探索一种提高CoO材料电子导电性和抑制充放电过程体积效应的解决方法。本次实验结果表明，制备得到的CoO@C是一种结晶良好的长方体结构，该复合材料在100 m A·g-1的电流密度下循环50次后，其可逆容量仍保持在519 m Ah·g-1，且库仑效率稳定在98%以上。同时该电极材料表现出优异的倍率性能，在1 000 m A·g-1的高倍率下仍具有229 m Ah·g-1的容量。本次研究深入探究了MOF衍生法制备高性能CoO@C复合材料的新路径，为氧化钴的工程化应用提供坚实的实验依据与理论参考。
Abstract：The escalating global energy demand and worsening environmental pollution necessitate the development of high-performance, eco-friendly lithium-ion batteries. Cobalt monoxide(CoO) is a promising anode material due to its high theoretical capacity. However, its practical application is hampered by poor electronic conductivity and significant volume variation during cycling. In this study, we designed and synthesized a carbon-coated CoO composite(CoO@C) via a controllable metal–organic framework(MOF)derivation route to address these challenges. The as-prepared CoO@C material exhibits a well-crystallized cuboid morphology. When evaluated as an anode, it delivers a high reversible capacity of 519 mAh·g-1 after 50 cycles at a current density of 100 mA·g-1, accompanied by a stable Coulombic efficiency exceeding 98%. Additionally, the electrode exhibits superior rate capability, maintaining a considerable reversible capacity of 229 mAh·g-1 at a high current density of 1,000 mA·g-1. This work affords a facile and novel strategy for the rational fabrication of high-performance CoO-based anodes via MOF derivation. It also provides reliable experimental references and theoretical insight for the practical implementation of advanced CoO anode materials.
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基本信息:
中图分类号:TM912;TB332
引用信息:
[1]马宇庆,白国梁,王来国,等.源自金属有机框架CoO@C复合材料的可控制备及储锂性能研究[J].井冈山大学学报(自然科学版),2026,47(04):29-36.
基金信息:
国家自然科学基金青年科学基金项目(22402001); 安徽省高校自然科学研究重大项目(2023AH040072)
2026-07-10
2026-07-10