Authors
Xiaolong Lu, Cancan Li, Ziyi Chen, Ben Zhou, Can Tu, Bijun Fang, Ningyi Yuan, Chao Huangfu
Published in
Dalton transactions (Cambridge, England : 2003). Jul 16, 2026. Epub Jul 16, 2026.
Abstract
As some of the latest additions to the two-dimensional (2D) family, transition metal carbides, carbonitrides and nitrides (MXenes) suffer from sluggish ion transport kinetics and insufficient active-site utilization, resulting from self-restacking for applications in electrochemical energy storage. The construction of in-plane pores will restrain the restacking and avoid redundant macropores; however, this remains hindered due to MXenes' unique etching preparation process and vulnerability to oxidation. Herein, by taking advantage of the confined interlayer spaces of Ti3C2Tx MXenes, combined with a rapid annealing process, a novel thermal shock-induced pore-engineering strategy is proposed to successfully construct in-plane mesoporous MXene nanosheets while preserving their hydrophilicity. Consequently, the optimized porous electrode structures significantly provide substantial redox-active sites and accelerate ion transportation, leading to a remarkable specific capacitance (494.8 F g-1 at 5 mV s-1), an unparalleled rate capability (91.5% capacitance retention at a low mass loading and 59.7% capacitance retention at a high mass loading of 7.89 mg cm-2 at 2000 mV s-1) and robust cycling stability. This work sheds new insights into the construction of in-plane pores in MXenes and provides an exciting opportunity for boosting their practical application for energy storage.
PMID:
42460490
Bibliographic data and abstract were imported from PubMed on 16 Jul 2026.
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