Highly strain-tolerant, disposable gas sensor on plastic wrap using two-dimensional hybrid nanomaterials.

Highly stretchable and disposable gas sensors were fabricated on household polyethylene (PE) wrap, employing rGO/Ti 3 C 2 T x MXene hybrid as gas-detecting medium. The fabrication procedure simply consisted of solution mixing of components and drop casting of the mixture. Furthermore, the PE wrap was cheap, stretchable, and sticky, well-fitting for one-time usable sensor applications. The rGO/Ti 3 C 2 T x hybrid particles were evenly distributed on PE, while rGO and Ti 3 C 2 T x MXene were in good contact in individual hybrid particles. The as-fabricated gas sensors could endure large strains of >100%, and responded to nitrogen dioxide (NO 2) and methane (CH 4) gases at room temperature. Notably, a stretchable gas sensor with optimal material combination retained good sensitivity to NO 2 even under large strains up to 100%. No response degradation was observed. The enhanced gas response and superb strain endurance were explained on the basis of the synergistic interplay of structural components. [Display omitted] • Stretchable, disposable gas sensors were fabricated by coating rGO/Ti 3 C 2 T x hybrid on household polyethylene wrap. • The specific surface area of the hybrid increased six times compared to pristine Ti 3 C 2 T x MXene. • The gas sensor could tolerate large strains of >100%. • The gas sensor normally responded to NO 2 gas even under large strains up to 100%. [ABSTRACT FROM AUTHOR]