Sodium transition metal oxides: the preferred cathode choice for future sodium-ion batteries?,Energy & Environmental Science

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Sodium transition metal oxides: the preferred cathode choice for future sodium-ion batteries?
Energy & Environmental Science ( IF 32.4 ) Pub Date : 2020-10-28 , DOI: 10.1039/d0ee02997a
Qiannan Liu _{1,

2,

3,

4,

5} , Zhe Hu _{6,

7,

8,

9,

10} , Weijie Li _{6,

7,

8,

9,

10} , Chao Zou _{1,

2,

3,

4,

5} , Huile Jin _{1,

2,

3,

4,

5} , Shun Wang _{1,

2,

3,

4,

5} , Shulei Chou _{6,

7,

8,

9,

10} , Shi-Xue Dou _{6,

7,

8,

9,

10}

Affiliation

The exploration of next-generation sodium-ion batteries (SIBs) is a worldwide concern to replace the current commercial lithium-ion batteries, mitigating the increasing exhaustion of Li resources. Sodium transition metal oxides are considered to be one of the most promising cathode materials for SIBs. The anionic redox reaction in Li-rich transition metal oxides is capable of providing extra capacity in addition to the cationic redox activities in lithium-ion batteries. A similar phenomenon exists in SIBs, which even applies to Na-deficient transition metal oxides. Moreover, transition metal oxides with mixed phase also demonstrate great potential. In this review, studies on anionic redox are first systematically introduced. The up-to-date advances on high-capacity transition metal oxide cathode materials for SIBs are then classified and summarized in different groups associated with or without anionic redox. The existing challenges as well as available solutions and strategies are discussed, and proposals with new insights are made at the end. It is expected that this work can provide new perspectives on controlling the anionic redox activity and finding novel high-capacity oxide cathode materials for SIBs.

中文翻译：

钠过渡金属氧化物：未来钠离子电池的首选阴极选择？

下一代钠离子电池（SIB）的探索已成为世界范围内关注的问题，以取代当前的商用锂离子电池，从而减轻锂资源的日益消耗。钠过渡金属氧化物被认为是SIB最有希望的阴极材料之一。除锂离子电池中的阳离子氧化还原活性外，富锂过渡金属氧化物中的阴离子氧化还原反应还能够提供额外的容量。在SIB中存在类似的现象，甚至适用于钠缺乏的过渡金属氧化物。此外，具有混合相的过渡金属氧化物也显示出巨大的潜力。在这篇综述中，首先系统地介绍了有关阴离子氧化还原的研究。然后将SIB的高容量过渡金属氧化物阴极材料的最新进展分类并归纳为与或不与阴离子氧化还原相关的不同组。讨论了现有的挑战以及可用的解决方案和策略，最后提出了具有新见解的建议。预期这项工作可以为控制阴离子氧化还原活性和发现用于SIB的新型高容量氧化物阴极材料提供新的观点。

更新日期：2020-12-17

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