Tailoring Etching Conditions to Unlock the Electrochemical Potential of 2D Ti3C2TX MXene.
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| Title: | Tailoring Etching Conditions to Unlock the Electrochemical Potential of 2D Ti |
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| Authors: | Yadav, Madhu1 (AUTHOR), Kumar, Mukesh1 (AUTHOR) mukesh.kumar@sgtuniversity.org, Kumar, Vinay2 (AUTHOR), Singh, Raj Bahadur3 (AUTHOR), Sharma, Ashutosh4,5 (AUTHOR) ashu.materials@gmail.com |
| Source: | JOM: The Journal of The Minerals, Metals & Materials Society (TMS). Jul2025, Vol. 77 Issue 7, p4943-4952. 10p. |
| Subjects: | Physical & theoretical chemistry, Energy storage, Power density, Energy density, Electrochemical analysis |
| Abstract: | We have synthesized Ti3C2TX MXene, a two-dimensional material for energy storage applications. The Ti3C2TX MXene was synthesized from Ti3AlC2 using a mixture of hydrochloric acid and lithium fluoride in contrast to the conventional highly toxic hydrofluoric acid-based method. Further, the etching conditions, such as temperature and reaction time, were optimized to obtain well-defined exfoliated MXene sheets. The results revealed that a temperature of 60 °C and an etching duration of 45 h yielded successful exfoliation and the formation of Ti3C2TX MXene with a hexagonal structure and an average grain size of 27 nm. Fourier-transform infrared and UV–Vis spectroscopy confirmed the presence of -O, -OH, and -F functional groups, and a direct bandgap of 2.01 eV was determined for MXene sheets. Electrochemical analyses demonstrated a high specific capacitance of 600 F/g at a 20-mV/s scan rate and a specific capacitance of 315 F/g at a current density of 0.5 A/g, along with an energy density and power density of 28 Wh/kg and 160 W/kg, respectively. These findings underscore the potential of Ti3C2TX MXene as a high-performance material for energy storage applications, while highlighting the advantages of a safer and ecofriendly process. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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| Abstract: | We have synthesized Ti3C2TX MXene, a two-dimensional material for energy storage applications. The Ti3C2TX MXene was synthesized from Ti3AlC2 using a mixture of hydrochloric acid and lithium fluoride in contrast to the conventional highly toxic hydrofluoric acid-based method. Further, the etching conditions, such as temperature and reaction time, were optimized to obtain well-defined exfoliated MXene sheets. The results revealed that a temperature of 60 °C and an etching duration of 45 h yielded successful exfoliation and the formation of Ti3C2TX MXene with a hexagonal structure and an average grain size of 27 nm. Fourier-transform infrared and UV–Vis spectroscopy confirmed the presence of -O, -OH, and -F functional groups, and a direct bandgap of 2.01 eV was determined for MXene sheets. Electrochemical analyses demonstrated a high specific capacitance of 600 F/g at a 20-mV/s scan rate and a specific capacitance of 315 F/g at a current density of 0.5 A/g, along with an energy density and power density of 28 Wh/kg and 160 W/kg, respectively. These findings underscore the potential of Ti3C2TX MXene as a high-performance material for energy storage applications, while highlighting the advantages of a safer and ecofriendly process. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 10474838 |
| DOI: | 10.1007/s11837-025-07383-2 |
