How to get a conversion reaction reversible? Lithium and sodium storage in MoS2 nanodots
C. Zhu, X. Mu, P.A. van Aken, Y. Yu, and J. Maier
It is shown that lithium as well as sodium can be incorporated into MoS2 nanodots with astonishing reversibility. For this purpose ultrasmall, single layers of MoS2 are embedded into carbon fibers via electrospinning. Here the reaction confinement in such a nanodot situation is key for the reversibility. The very same confinement also leads to the substantial lowering of the half-cell voltage which is beneficial in terms of battery function.