Publication
The technological barriers of the dimensional engineering and interfacial instability seriously hinder the scalable production of metallic (1T) transition metal dichalcogenides (TMD) monolayers. In this article, a facile and fast electron injection strategy is developed to modulate the d orbits of Mo center in trigonal prismatic 2H phases (MoS2 and MoSe2); meanwhile various cations (Li+, Na+, and K+) reinforce the in-plane 1T-atomic arrangement and expand the out-of-plane spacing for easy exfoliation. Theoretical and experimental evaluations further elucidate the decisive electron-donating capability and suitable ionic radius in stabilizing 1T coordination. The as-tailored 1T-MoS2/MoSe2 anodes can achieve the robust Na+ storage in the half cells (5000 cycles at 5 A g(-1)) and extreme power output of 3134.9 W kg(-1) in the full cell. This phase-engineering approach enables the precise dimensional manipulation of the 1T TMDs, which further extends their application horizons as the cation host for the power-oriented battery systems.