Dual-Function Metal–Organic Framework-Based Wearable Fibers for Gas Probing and Energy Storage

Abstract

Metal-organic frameworks (MOFs) coupled with multiwalled carbon nanotubes (MWCNTs) have been developed with an ultrahigh sensitivity for hazardous gas monitoring. Both the MOF/MWCNT and as-derived metal oxides (MOs)/MWCNTs hybrid fibers deliver an ultralow detection limit for NO₂ down to 0.1 ppm without external heating, and they can be further bent into different angles without loss of sensing performance. Also, a high specific capacitance of 110 F cm^-3 can also be obtained for MO/MWCNT hybrid fibers, demonstrating promising application for integrated wearable devices.