Two-Dimensional MXene with Controlled Interlayer Spacing for Electrochemical Energy Storage.
basic_science · Level V
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- Record sourced from PubMed, PMID 28281347.
- Also identified by DOI 10.1021/acsnano.7b01108.
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Abstract
In this issue of ACS Nano, Luo et al. report the preparation of pillared two-dimensional (2D) Ti<sub>3</sub>C<sub>2</sub> MXenes with controllable interlayer spacings between 1 and 2.708 nm. These materials were further intercalated by ion exchange with Sn(+IV) ions. The results show improved electrochemical performance due to improved ion accessibility into the 2D structure as well as the confinement effect, which limits volume expansion during the Li-alloying reaction. Beyond this specific example, the demonstration that the interlayer spacings of MXenes can be fine-tuned by creating pillared structures based on the spontaneous intercalation of surfactants opens new perspectives in the field of electrochemical energy storage.