Abstract:

With the rapid development of new energy vehicles, more and more attention is paid to battery materials with high energy density. Due to the advantages of high specific capacity, good rate performance, abundant resources, and low price, SnO₂-C composites are regarded as one of the most promising anode materials for next-generation lithium and sodium ion batteries. Based on the dimensional changes and dimensional compounding methods of SnO₂-C composites, we firstly classifies different SnO₂-C composites and then summarizes the latest representative progress of them in detail. The focus is placed on the dimensional design formulas and the resulting synergistic effect that could potentially improve the performance. In view of the excellent results from the synergistic effect, future research could focus upon multiple composite. At the same time, simple, environmental-friendly and cheap synthetic processes should be explored. The concept and strategy presented in this work could provide some basis for the practical rational design and scalable construction of the metal oxide-C composites of lithium ion and sodium ion batteries.

Key words: SnO₂-C composite anode material, lithium ion battery, sodium ion battery, dimensional design, activated carbon, electrochemistry

摘要：

新能源汽车的高速发展，对电池材料的能量密度提出了更高的要求。SnO₂-C复合材料因比容量高、倍率性能好、资源丰富、价格低廉等优点而被视为下一代锂、钠离子电池最有潜力的负极材料之一。基于SnO₂-C复合材料的尺寸变化和尺寸复合方式，本文对SnO₂-C复合材料进行了分类，并且详细综述了SnO₂-C复合材料的最新代表性进展，重点涉及尺寸设计公式以及由此产生的协同效应和提高性能的潜力。最后，讨论了该领域未来的发展方向和前景，鉴于协同效应的优良体现，以后该研究将偏于多重复合方向，同时会探索出简单、环保、廉价的合成工艺，不断向商品化的方向靠近。其概念和策略对实际锂离子、钠离子电池金属氧化物-C复合材料的合理设计和可扩展构造提供了一些依据。

关键词: SnO₂-C复合负极材料, 锂离子电池, 钠离子电池, 维度设计, 活性碳, 电化学