“…Polymers modification with 2D conductive material fillers is a recent trend in wearable sensors, enhancing the sensor's physical, chemical, and structural stability in an unpredictable environment (Zhao et al 2021 ). In addition, 2D layered materials such as graphene oxide, MoS 2 , and carbon nanotubes, have been introduced into polymers (Qadir et al 2021 ; Li et al 2020 ). Recently, a new kind of 2D transition metal carbide, nitride and carbonitrides materials, also known as MXene (Mx), has been widely studied for sensor applications (Pei et al, 2021 ).…”