Abstract
The life and safety issues of Li metal electrodes seriously hinder its application. In order to solve this problem, MXene protected Li electrode has been prepared. Due to the formation of MXene-Ti3C2Tx interface layer, not only the uneven deposition of Li could be alleviated, but also the unstable formation of solid electrolyte interphase can be suppressed. Thus, the MXene-Ti3C2Tx@Li electrodes have exhibited excellent cycling stability. The cycling performance of MXene-Ti3C2Tx@Li electrodes have been proved by symmetric cells, which exhibit relatively stable voltage plateau and a small voltage hysteresis even after 29000 min for stripping/plating cycling (about 230 cycles) under current density of 5 A cm-1 and specific capacity of 5 Ah cm-1. Overall, this study demonstrates MXenes as a critical enabler to realize high-performance Li metal batteries.
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