Journal
ACS MATERIALS LETTERS
Volume 1, Issue 6, Pages 628-632Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsmaterialslett.9b00390
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Funding
- National Science Foundations of China [21771024, 51572031, 21871028]
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Two-dimensional MXene, a significant member of the two-dimensional family, has attracted much interest in physics, energy evolution, environmental science, and nanomedicine. However, the acute toxicity of fluoride-based synthetic procedures remains an impediment to large-scale fabrication and applications. It is an urgent need to develop an innocuous and effective protocol for MXene synthesis. Therefore, we developed a facile, rapid fluoride-free electrochemical etching strategy based on the selective corrosion of Al layers in titanium aluminum carbide (Ti3AlC2) in a traditional Li-ion battery system. On the basis of the intercalation-alloying-expansion-microexplosion mechanism, single- and few-layer fluoride-free Ti3C2Tx(T = O or OH) were prepared. Furthermore, the fluoride-free Ti3C2Tx exhibits excellent capability for a supercapacitor. This strategy provides a safe, green, and environmentally friendly way to realize the production of ultrathin MXene materials from MAX.
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