锂离子电池二氧化锡负极材料研究进展

由于以碳为负极材料的锂离子电池(LIBs)已很难满足高性能电子产品对高能量密度的需求,因此研究新的锂离子电池负极材料成为近年来主要的研究方向。在金属氧化物中,二氧化锡(SnO_2)以其较高的理论比容量(782 mAh/g)引起了广泛的关注。首先概述了SnO_2的不同形貌如纳米颗粒、纳米棒、纳米片、纳米微球等在锂离子电池方面的特性;然后阐述了通过掺杂或修饰改善其结构及电化学性能;最后展望了SnO_2基负极材料的纳米结构设计与改进在锂离子电池领域面临的挑战。

Review of the Developments of Tin Dioxide Anode Materials for Lithium-Ion Batteries

The development of new electrode materials for lithium-ion batteries (LIBs) is always being a focal area of material science, as the current technology may not be able to meet the high energy demands for electronic devices with better performances. Among all the metal oxides, tin dioxide (SnO₂) is regarded as a promising candidate to serve as the anode material for LIBs due to its high theoretical capacity. The paper starts with an overview of the syntheses of phase-pure SnO₂ hierarchical structures with different morphologies such as nanorods, nanosheets and nanospheres, as well as their modifications by doping and composing with other materials. The design of SnO₂-based nanostructures with improved performances and the challenges in the areas of lithium-ion batteries were described.