D. S. Wang, Y. Y. Zhao, R. Q. Lian, D. Yang, D. Zhang, X. Meng, Y. H. Liu, Y. J. Wei*, G. Chen*, Atomic insight into the structural transformation and anionic/cationic redox reactions of VS2 nanosheets in sodium-ion batteries, J. Mater. Chem. A, 2018, 15985-15992.