Unlike the stretchable physical sensors such as stretchable pressure sensors, strain sensors, and temperature sensors, few works have been reported on the stretchable gas sensors. This study presents that stretchable gas sensors can be fabricated by decorating reduced graphene oxide/silver nanowires (rGO/AgNWs) hybrids on the porous polyurethane (PU) sponges using a facile dip-coating method. The sensors show good room-temperature responses to NO₂ gas under both a bending strain (r = 3 mm) and a large tensile strain up to 60%. The response of about −15% is measured at a 50 ppm of NO₂ under a 60% strain. Furthermore, reducing gases like acetone and ethanol can also be detected under the large strains. The results of this study offer a new insight into realization of highly stretchable and easy-to-fabricate gas sensors.

与可伸展的物理传感器（例如可伸展的压力传感器，应变传感器和温度传感器）不同，关于可伸展的气体传感器的报道很少。这项研究表明，可以通过使用简便的浸涂法在多孔聚氨酯（PU）海绵上装饰还原的氧化石墨烯/银纳米线（rGO / AgNWs）杂化物来制造可拉伸的气体传感器。传感器在弯曲应变（r = 3 mm）和高达60％的大拉伸应变下均显示出对NO ₂气体的良好室温响应。在50 ppm的NO _2下测得的响应约为-15％在60％的压力下。此外，还可以在大菌株下检测到诸如丙酮和乙醇之类的还原性气体。这项研究的结果为实现高度可拉伸且易于制造的气体传感器提供了新的见解。