高级检索

碳材料在水系锌离子电池负极中的应用研究进展

Recent Advance on the Application of Carbon Materials for Anodes of Aqueous Zinc Ion Batteries

  • 摘要: 在目前已开发的电化学储能器件体系中,水系锌离子电池由于运行安全、环境友好以及高理论比容量而受到广泛关注。但是,水系锌离子电池负极存在的析氢副反应、枝晶生长以及金属腐蚀等不足,阻碍了其在储能领域的进一步发展。近年,各种类型的碳材料(如碳量子点、碳纳米管、碳纳米纤维、石墨烯以及MOF衍生碳)被广泛用于水系锌离子电池,为稳定锌负极提供了诸多策略。碳材料作为电解液添加剂,能够优先吸附在锌金属表面,诱导Zn2+沉积;作为负极界面层,碳材料涂层不仅能够避免锌金属负极与电解液直接接触,还可均匀离子流,从而阻止金属腐蚀,实现锌金属无枝晶生长;作为负极基底,碳材料框架能够均匀电流密度,诱导Zn2+成核,从而调节锌的沉积行为。本文归纳总结水系锌离子电池的基本构造、工作机理、锌金属负极存在的问题以及目前碳材料在稳定锌金属负极方面的重要研究进展,并对碳材料在水系锌离子电池领域中的应用进行展望,提出优化方案:制备柔韧性好的碳纳米材料作为锌金属界面层;通过化学调控制备梯度亲锌碳纳米材料作为负极基底;在锌负极表面构建碳复合材料界面层;丰富碳材料对锌负极的改性策略;制备杂原子掺杂碳材料作为锌负极基底。

     

    Abstract: Among the currently developed electrochemical energy storage battery systems, aqueous zinc ion batteries (AZIBs) have attracted wide attention from researchers due to their safe operation, environmental friendliness, and high theoretical specific capacities. However, the anode of AZIBs faces challenges, such as hydrogen evolution side reactions, dendritic growth, and metal corrosion, which hinder their further development in the field of energy storage. In recent years, various types of carbon materials (such as carbon quantum dots, carbon nanotubes, carbon nanofibers, graphene and MOF derived carbon) have been widely used in AZIBs, providing many strategies for stabilizing zinc anode. As electrolyte additives, carbon materials can preferentially adsorb on the surface of zinc metal and induce Zn2+ deposition. As the interface layer of the anode, the carbon material coating can not only prevent direct contact between the zinc anode and the electrolyte, but also uniform ion flow, thereby preventing metal corrosion and achieving dendrite free growth of zinc metal. As the anode substrate, the carbon framework can uniform current density, induce the nucleation of Zn2+, and thus regulate the deposition behavior of zinc. This review summarizes the basic structure, working mechanism, current issues of zinc metal anode in AZIBs, and recent advances on carbon materials for stabilizing zinc metal anode, and presents future prospects for the application of carbon materials in the field of AZIBs and proposes optimization plans, including the preparation of flexible carbon nanomaterials as zinc metal interface layers, preparation of gradient zincophilic carbon nanomaterials as anode substrates through the chemical control, constructing a carbon composite material interface layer on the surface of the zinc anode, enriching the modification strategies of carbon materials for zinc anode, and preparation of heteroatom-doped carbon materials as zinc anode substrates.

     

/

返回文章
返回