Materials Design, Sensing Performance and Mechanism of Anhydrous Hydrogen Fluoride Gas Sensor Based on Amino-Functionalized MIL-101(Cr) for New Energy Vehicles

To guarantee the security of new energy vehicles (NEV), which include storage devices such as batteries, a quartz crystal microbalance (QCM) sensor was designed to detect online HF gas produced from leakage electrolyte in power system. Based on chemical properties gas, an amino-functionalized metal–organic framework NH2-MIL-101 (Cr) synthesized sensing material QCM transducer for NEV safeguard. The materials are based hydrogen bond interaction between amino group and molecular were characterized by powder X-ray diffraction, Brunauer–Emmett–Teller (BET) surface area analysis, Fourier transform infrared spectroscopy (FT-IR), photoelectron (XPS) thermogravimetric analysis (TGA), etc. performance this showed high sensitivity, with limit detection at 500 ppb, short response/recovery time good reproducibility anhydrous fluoride (AHF) detection. Additionally, mechanism NH2-MIL-101(Cr) resonator AHF is revealed be reversible adsorption Gaussian 09. It well-matched result experimental determination through temperature-varying microgravimetric experiments. Therefore, MIL-101(Cr) may candidate safety monitor due its rapid response leaked decomposition electrolyte.