SnO2基锂离子电池负极材料研究进展

 作为一种N型半导体，二氧化锡基负极材料由于其拥有较高的理论比容量（782 mA·h·g^-1）、高能量密度等优势受到了广泛关注。然而，由于二氧化锡负极材料在充放电过程中的体积效应和本身导电性较差等导致的其循环性能和倍率性能较差，从而制约了其作为锂离子电池负极材料的应用。本文从二氧化锡的纳米化及复合化（包括其与金属氧化物、无定型碳、碳纳米管和石墨烯等复合）2 方面综述了二氧化锡基锂离子电池负极材料的研究进展，同时对SnO₂基锂离子电池负极材料的发展方向进行了展望。

Progress of tin oxide-based anode materials for lithium-ion batteries

As an N-type semi-conductor, the tin dioxide (SnO₂) based anode materials have received a great attention due to its high theoretical capacity (782 mA·h/g) and high energy density. However, the poor cycling performance resulting from the electrode pulverization and the electrical disconnection caused by large volume changes (about 300%) during the charge and discharge process and the poor rate properties resulting from the low electrical conductivity of SnO₂ have limited its development. To address these problems, one strategy is to construct various nanostructures, including the nanoparticles, the nanowires, the nanofibers, the nanotubes, the nanosheets and the nanospheres. In addition to the nanosizing SnO₂ particles, the SnO₂ based hybrids as the anode materials for the LIBs have been also studied intensively to enhance the reaction reversibility. This paper mainly reviews the research progress of tin dioxide based anode materials based on the two aspects of nanosizing and preparing SnO₂ based hybrids, including the hybrids with other metal oxides, the amorphous carbon, the carbon nanotubes and the graphene. Finally, we also discuss the existing issues and challenges in the development of SnO₂-based anode materials for lithium ion batteries.