In this study, ZnO@SnO2–Pt core–shell
nanofibers with a hollow structure have been prepared by coaxial electrospinning
and heat treatment. The core–shell and hollow structures of
nanofibers were confirmed by scanning electron microscopy (SEM) and
transmission electron microscopy (TEM). The Brunauer–Emmett–Teller
(BET) specific surface area test shows that the specific surface area
of ZnO@SnO2–Pt core–shell nanofibers is larger
than those of ZnO@SnO2 core–shell nanofibers and
SnO2 nanofibers. The gas-sensing test result shows that
the response to 100 ppm ethanol gas is 132.04 and the response time
is 5 s at 200 °C for ZnO@SnO2–Pt core–shell
nanofibers with 0.3 wt % Pt. Compared with those of ZnO@SnO2 core–shell nanofibers without Pt and pure SnO2 nanofibers, the optimum working temperature of ZnO@SnO2–Pt core–shell nanofibers is reduced by 125 °C
and the maximum response is increased by 70.9 and 367.7%. Furthermore,
the gas-sensing mechanism is discussed in detail.
In this study, a polyimide/aminopropyllsobutyl polyhedral oligomeric silsesquioxane (PI/A‐POSS) membrane with a novel 3D thermal crosslinking structure is prepared by electrospinning and subsequent imidization. Compared with the pure PI membrane, PI/A‐POSS composite membranes present better mechanical properties, narrower distribution of pore size, smaller average pore size, and better thermal stability. When A‐POSS content is 3 wt%, the composite membrane (A3) has outstanding electrolyte uptake, excellent ionic conductivity, low interfacial resistance, and the high electrochemical stability of anode. The battery assembled with the A3 separator has an excellent first discharge capacity of 137.8 mAh g−1 and its capacity retention rate is still as high as 76.49% after 100 cycles at 2.0 C. Furthermore, battery assembled with the A3 separator shows excellent rate capacity with a relatively high discharge capacity up to 169.7 mAh g−1 at 0.2 C and a superior capacity recovery rate of 98.06% at 30 °C. Especially, the battery assembled with the A3 separator shows more prominent rate capacity with an excellent first discharge capacity up to 180.5 mAh g−1 at 0.2 C and a superior capacity recovery rate of 95.79% at 60 °C.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.