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Research Highlight

XMenes: A New Family of 2D Materials for Enhanced Energy Conversion, Storage, and Superconductivity

Scientific Achievement

A new class of 2D materials called XMenes (cross-meens) are predicted based on the non-van der Waals bulk XAM (cross-AM) phase.

Significance and Impact

The new XMenes significantly broaden the landscape of traditional MXenes exfoliated out of a MAX phase. This new material’s landscape is particularly promising for energy conversion (hydrogen evolution reaction), storage (anode materials), and unconventional superconductivity.

Research Details

We extracted 2D XMenes from 636 XAM phases, established a library of 79 XMenes, and identified 24 XMenes as being thermodynamically, dynamically, mechanically, and thermally stable via density functional theory (DFT) calculations .
Demonstrated their promise as electrocatalysts for the  hydrogen evolution reaction and as an anode material for Li-ion batteries and pointed out their potential for superconductor application.

J. Gu, Z. Zhao, J. Huang, B.G. Sumpter, and Z. Chen, "MX Anti-MXenes from Non-van der Waals Bulks for Electrochemical Applications: The Merit of Metallicity and Active Basal Plane," ACS Nano 15, 6233-6242 (2021).  DOI: 10.1021/acsnano.0c08429