Improved Lithium Ion Storage Capacity of Ti2snc Via In-Situ Formation of Sno2

MAX phase materials, the precursor of MXenes, have been paid more and more attention in electrochemical applications. However, the relatively low specific capacity of the MAX materials greatly limits their application, while tin-based anode materials have been widely used in batteries due to their high specific capacity. In this study, we successfully prepared Ti 2 SnC with high lithium capacity by in-situ forming SnO 2 . The results show that there are TiC nanowhiskers and SnO 2 inside the Ti 2 SnC MAX calcinated at 800 ℃, and the specific capacity could reach 377 and 371 mAh·g -1 at the high current density of 400 mA·g -1 and 1.0 A·g -1 , respectively, which are much higher than those of most MAX phase materials reported in previous studies, such as Ti 3 SiC 2 and Nb 2 SnC. The method of this study provides a new pathway for the application of MAX phases in electrochemistry, and has a more in-depth application prospect