Abstract

In recent years, Nb-based oxides, especially Nb₂O₅, due to their unique structural advantages, have stimulated scholars’ extensive research enthusiasm in the field of energy storage systems including lithium ion batteries (LIBs) and sodium ion batteries (SIBs), excellent chemical stability and outstanding rate capability dominated by pseudocapacitive nature. In addition, Nb-based oxides usually have a higher operating voltage (> 1.0 V vs Li⁺/Li), which can effectively prevent the decomposition of organic electrolytes and the formation of solid electrolyte interface films in batteries. This review systematically summarizes the different crystal structures of Nb₂O₅ and the lithium storage mechanism based on theoretical calculations, as well as the comparison of various synthesis strategies. In addition, the advanced research progress of niobium-based oxides as anode materials in LIBs and SIBs is summarized from the perspective of nanostructure control engineering that affects electrochemical performance. It also puts forward reasonable cognition and challenges for future research, which is conducive to the design of energy storage equipment that meets the needs of sustainable development.

Graphic abstract

The design and optimization of various synthesis methods facilitate the formation of a variety of heterogeneous nanostructures, leading to reversible storage of Li and Na ions.

中文翻译：

---

用于电化学锂和钠存储的纳米级氧化铌阳极：近期改进综述

摘要

近年来，基于Nb的氧化物，尤其是Nb ₂ O ₅，由于其独特的结构优势，激发了学者们在包括锂离子电池（LIB）和钠离子电池（SIB）的储能系统领域的广泛研究热情。 ，优异的化学稳定性和出色的速率能力（由拟电容性质决定）。此外，基于Nb的氧化物通常具有较高的工作电压（相对于Li ⁺ / Li > 1.0 V ），可以有效防止有机电解质的分解和电池中固体电解质界面膜的形成。这篇综述系统地总结了Nb ₂ O ₅的不同晶体结构基于理论计算以及各种合成策略的比较，对锂的储存机理进行了研究。此外，从影响电化学性能的纳米结构控制工程的角度总结了铌基氧化物作为锂离子电池和SIBs阳极材料的先进研究进展。对未来的研究提出了合理的认识和挑战，有利于设计出满足可持续发展需求的储能设备。

图形摘要

各种合成方法的设计和优化促进了各种异质纳米结构的形成，从而导致了Li和Na离子的可逆存储。