【摘要】 透射电镜作为当代最常用的材料表征手段之一,有着高的分辨率,可以较清晰地在原子尺度表征材料的微观结构与化学成分,在许多学科中发挥着关键作用。新型电池作为高效、清洁的储存装置,给现代生活带来了许多便利,拥有极大的科研与商用价值。而作为电池重要部件的正极材料,是否能高效、安全地工作,时刻影响着新型电池的商业化前景。本文综述了透射电子显微学在新型电池正极材料失效机制研究中的贡献,总结了正极材料失效的普遍原因。利用透射电子显微学表征电池正极,有助于优化传统正极材料,对设计更加先进、稳定的新型正极材料提供理论依据。更多还原

【Abstract】 Transmission electron microscopy(TEM), as one of the most commonly used materials characterization methods in modern times, has a super high resolution and can clearly characterize the microstructure and chemical composition of materials at the atomic scale. It plays a key role in many disciplines. As an efficient and clean storage device, the advanced batteries have brought a lot of convenience to modern life and have great scientific research and commercial value. Being an important part of the battery, cathode determines the work of efficiency and safely of the whole battery. In this paper, the contribution of TEM to the failure mechanism of advanced batteries cathode materials is reviewed. The characterization of battery cathode by TEM is helpful to optimize the traditional cathode materials and provide theoretical basis for the design of more advanced and stable new cathode materials.更多还原