Abstract
Suitable electrothermal materials with high heating rates at low electric power are highly desirable for de-icing and thermal management applications. Herein, 3D epoxy resin/Ti3C2T x MXene composites are synthesised and shown to be promising candidates for electrothermal heaters where the MXene serves as a nanoheater and the epoxy resin spreads the heat. A unidirectional freeze-casting technique was used to prepare an anisotropic Ti3C2T x aerogel into which epoxy resin was then vacuum infiltrated and cured. The resulting composite showed an excellent Joule heating performance over repeated heating–cooling cycles. A steady-state temperature of 123 °C was obtained by applying a low voltage of 2 V with 5.1 A current, giving a total power output of 6.1 W cm−2. Such epoxy/MXene aerogel composites, prepared by a simple and cost-effective manner, offer a potential alternative to the traditional metal-based and nanocarbon-based electrothermal materials.
Highlights
Electric heating systems have been used over a century across a wide range of applications including local heating, automotive de-icing, drug release and micropatterning [1]
3D epoxy resin/Ti3C2Tx MXene composites are synthesised and shown to be promising candidates for electrothermal heaters where the MXene serves as a nanoheater and the epoxy resin spreads the heat
In the case of reduced graphene oxide (rGO), oxygen-containing functional groups can be evaporated during the rapid local heating [12] which is detrimental in terms of structural stability and Joule heating performance over longer cycles
Summary
Suitable electrothermal materials with high heating rates at low electric power are highly desirable of the work, journal citation and DOI. 3D epoxy resin/Ti3C2Tx MXene composites are synthesised and shown to be promising candidates for electrothermal heaters where the MXene serves as a nanoheater and the epoxy resin spreads the heat. A unidirectional freeze-casting technique was used to prepare an anisotropic Ti3C2Tx aerogel into which epoxy resin was vacuum infiltrated and cured. The resulting composite showed an excellent Joule heating performance over repeated heating–cooling cycles. A steady-state temperature of 123 ◦C was obtained by applying a low voltage of 2 V with 5.1 A current, giving a total power output of. Such epoxy/MXene aerogel composites, prepared by a simple and cost-effective manner, offer a potential alternative to the traditional metal-based and nanocarbon-based electrothermal materials
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