MXene/Carboxylated Cellulose Nanofiber Inks for Direct Ink Writing Electromagnetic Interference Shielding, Humidity Sensing, and Joule Heating

. Meanwhile, when functioning as a Joule heater, a low-voltage drive and excellent cyclic and long-term stability can be observed. In addition, the humidity-sensing function integrated with wireless transmission shows a maximum response value of 2768%. The MXene gratings fabricated by DIW are multifunctional and can be applied to the next generation of wearable devices.