Femtosecond laser synthesis of multiscale high-entropy alloys/graphene composites for high-performance Joule heating

Abstract High-entropy alloy nanoparticles (HEA-NPs) have garnered significant interest across diverse fields. However, thus far, research on their applications has predominantly focused on electrocatalysis. Expanding the applications of HEA-NPs beyond current fields is timely and desirable but remains a challenge. Here, we demonstrate the successful femtosecond laser synthesis of HEA-NPs on the laser-induced graphene (LIG) for realizing high-performance Joule heating applications. This prepared composites (HEAs/LIG) exhibits exceptional electrothermal conversion ability with efficiency up to ~285.4 °C cm 2 W −1 . Furthermore, the HEAs/LIG also shows high broadband infrared emissivity of ~0.98 across the…

• NN
  National Natural Science Foundation of China

  Awards: 52475499, 52222513
• CS
  Central South University
• FR
  Fundamental Research Funds for the Central Universities