石墨烯气凝胶复合材料在电化学储能中的应用研究进展

Recent advances in applications of graphene aerogel composite materials for electrochemical energy storage

  • 摘要: 石墨烯气凝胶作为一种内部互连的三维框架体,在微观和宏观尺度上具有突出的维度特性,成为各种零维、一维、二维和三维材料的理想宿主。其高导电性、高比表面积及高结构稳定性等特点令石墨烯气凝胶在储能领域得到了广泛的应用,特别是在高比容量金属离子电池负极和超级电容器电极等领域。首先,本文对石墨烯前体及气凝胶的处理策略进行整理,介绍当前不同处理方式对石墨烯前体及气凝胶成型影响。其次,根据储能机制的不同,介绍石墨烯气凝胶复合材料在主流储能器件中的改性应用及性能表现。最后,对电化学储能用石墨烯气凝胶复合材料的研究进展进行总结,指出当前存在的挑战并展望未来的研究方向。

     

    Abstract: Graphene aerogel has become an ideal host for various zero dimensional, one-dimensional, two-dimensional and three-dimensional materials because of prominent dimensional characteristics in both micro and macro scales with its interconnected three-dimensional framework. The high conductivity, specific surface area and structural stability make it widely used in the field of energy storage in recent years, especially in the application of anodes for metal ion batteries and supercapacitors electrodes with high specific capacity. Firstly, the treatment strategies of graphene precursor and aerogel are sorted out, and the effects of different treatment methods on the formation of graphene precursor and aerogel are introduced. Secondly, according to the different energy storage mechanisms, the modified application and performance of graphene aerogel composites in mainstream energy storage devices are introduced. Finally, the research progress of graphene aerogel composites for electrochemical energy storage are summarized, the current challenges are pointed out and the future research directions are prospected.

     

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