Etching-courtesy NH4+ pre-intercalation enables highly-efficient Li+ storage of MXenes via the renaissance of interlayer redox

Inspired by a well-known architecture notion that load-bearing walls enable maintaining a highly-stable multiple-floored building, superior advantages are afforded via fabricating the NH4+ ions pre-intercalated Mo2CTx MXene (Mo2CTx-N) in a mixed solution of NH4F and HCl via a simple one-step hydrothermal method. As a result of the synergistic effects of pillared structure, immobilizing -F groups and unlocking Mo-based redox, the Mo2CTx-N remarkably delivered a reversible capacity of 384.6 mAh g(-1) at 200 mA g(-1) after 100 cycles. Our work lays a foundation for fully packaging its optimal performance via carding and architecting the chemistry of the MXene layers and between them. (c) 2022 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by ELSEVIER B.V. and Science Press. All rights reserved.

Automated summary

In this study, a facile one-step hydrothermal method was used to fabricate Mo2CTx-N with superior advantages. The synergistic effects of pillared structure, immobilizing -F groups and unlocking Mo-based redox contributed to its excellent reversible capacity.