▎ 摘　　要

Wearable conductive fabrics are an essential part of flexible electronics, which can be used as portable devices for human thermal management, healthcare, and motion detection. However, obtaining low-cost and scalable production of these types of conductive fabrics with high conductivity, low-voltage-activating electrothermal response, and satisfactory washability still has critical challenges. Herein, high-conductive graphene ink-decorated cotton fabrics (CFs) are fabricated via a facial double-side screen-printing technique for flexible wearable heaters and strain sensors. The porous and rough CFs with spatially distributed graphene inks create efficient pathways for electron movement, and the outmost water-soluble polyurethane could dramatically promote the washability, cycling stability, and environmental resistance properties of conductive fabrics. Interestingly, the as-obtained graphene conductive textiles demonstrate high conductivity (1.18 x 10(4) S/m), which are applied to flexible wearable heaters, showcasing a high steady-state temperature (52.6 degrees C) at a low voltage of 3 V, excellent washability, cycling stability, and environmental resistance properties. Additionally, the fabricated conductive fabrics can also be applied to wearable strain sensors, which exhibit high sensitivity, excellent recovery, and stability in a refined strain range for responding to human motions. Consequently, the designed graphene conductive fabrics provide a promising strategy to realize low-cost and scalable next-generation wearable electronic textiles.