Sodium–tin metal–organic framework anode material with advanced lithium storage properties for lithium-ion batteries

• Published in: Journal of materials science Vol. 55; no. 14; pp. 6030 - 6036
• Main Authors: Wu, Na, Yang, Yu-Jing, Jia, Ting, Li, Tao-Hai, Li, Feng, Wang, Zhe
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.05.2020; Springer; Springer Nature B.V
• Subjects: Anodes; Batteries; Characterization and Evaluation of Materials; Chemistry and Materials Science; Classical Mechanics; Crystallography and Scattering Methods; dicarboxylic acids; Electrode materials; Energy Materials; ions; ligands; Lithium; lithium batteries; Lithium-ion batteries; Materials Science; Metal-organic frameworks; Polymer Sciences; Reaction mechanisms; Rechargeable batteries; Sodium; Solid Mechanics; Storage batteries; Storage capacity; tin; Tin compounds
• ISSN: 0022-2461; 1573-4803
• DOI: 10.1007/s10853-020-04436-6

Tin-based materials have a high theoretical capacity as a negative electrode material for lithium-ion batteries. However, the problem of volume expansion during lithium-ion insertion and extraction has severely limited its development. In this work, sodium–tin metal–organic framework (Na–Sn-MOF) compounds were successfully synthesized by simple reflux method. And we studied the reaction mechanism of the compound as anode materials for lithium-ion batteries. The special stable structure constructed by the 1,4-benzenedicarboxylic acid ligands and larger Na + ions will limit volume expansion of the tin effectively during the process of lithium–delithium. Therefore, the sodium–tin metal–organic framework anode material exhibits a high lithium storage capacity of 523 mAh g −1 with good cycling stability and rate capability. In addition, the Coulombic efficiency of the anode material for lithium-ion batteries is closed to 100% when the lithium ions are constantly embedded and released. This work for solving the problem of volume expansion of tin-based materials is quiet meaningful.