Oxygen Redox Chemistry in Rechargeable Li-Ion and Na-Ion Batteries
Oxygen Redox Chemistry in Rechargeable Li-Ion and Na-Ion Batteries
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DOI：
10.1016/j.matt.2020.12.004
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发表时间：
2021-02
期刊：
影响因子：
--
通讯作者：
Muhammad Mominur Rahman;Feng Lin
中科院分区：
文献类型：
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作者：
Muhammad Mominur Rahman;Feng Lin
基于阳离子氧化还原的氧化物阴极已经形成了碱离子电池的基础。由阳离子氧化还原提供的有限能量密度可以通过触发氧氧化还原来克服。因此，从材料开发和基本理解的角度来看，氧氧化还原受到了广泛的关注。虽然氧氧化还原被广泛研究，但仍有许多需要了解的。巩固各种概念的氧氧化还原（静态/动态）可以通知一个统一的理解。此外，具有氧氧化还原的材料产生显著的挑战，例如析氧、电压滞后/衰减和化学/结构转变。由于在不同的长度和时间尺度上的化学/结构复杂性，这些现象的相互关系尚未达成共识。鉴于这些材料在下一代电池中的巨大潜力，对最近对氧氧化还原的理解进行回顾是及时的。在这篇综述中，通过整合各种思想流派，总结了氧氧化还原的机理理解，挑战及其缓解。
Cationic redox-based oxide cathodes have formed the basis of alkali-ion batteries. The limited energy density provided by cationic redox can be overcome by triggering oxygen redox. Hence, oxygen redox has received extensive interest from the perspective of materials development and fundamental understanding. Although oxygen redox is widely studied, there is still much to understand. Consolidating various concepts of oxygen redox (static/dynamic) can inform a unified understanding. Moreover, materials with oxygen redox create significant challenges such as oxygen evolution, voltage hysteresis/fading, and chemical/structural transformations. A consensus is yet to be achieved on the interrelationship of these phenomena due to the chemical/structural complexities at different length and time scales. Given the great potential of these materials for next-generation batteries, a review of the recent understanding of oxygen redox is timely. In this review, the mechanistic understandings, and challenges and their mitigation with oxygen redox are summarized by integrating various schools of thought.