The separator is an essential component of lithium‐ion batteries as it affects ion transport and safety performance. Herein, a novel class of separators fabricated from poly(vinyl alcohol) and heterometallic metal‐organic frameworks, which affords a higher density of open bimetal sites, stronger complexation with anions, more porous structure, and enhanced thermal stability and electrolyte wettability is reported. The adoption of such separators substantially increases lithium‐ion conductivity and lithium‐ion transference number, leading to batteries with prolonged lifespan, improved low‐temperature performance, and enhanced rate performance.
We report a facile and effective inorganic polycondensation combined with aerosol-spray strategy towards high-performance photocatalyst by fabricating mesoporous Ti1-xSnxO2 (0 < x < 1) solid solution. Such Ti1-xSnxO2 nanocrystals with high Sn-doped contents are self-assembled into mesoporous spheres can effectively promote visible-light harvest and high quantum yield, leading a longer lifetime of the photoelectron-hole pairs and less recombination. Such the photocatalysts enhanced photocatalytic activity for the degradation of Rhodamine B (RhB). The representative Ti0.9Sn0.1O2 and Ti0.8Sn0.2O2 compounds reach an optimum degradation of ≈50% and 70%, respectively, after 120 min irradiation under visible irradiation. The mesoporous Ti1-xSnxO2 solid solution could inhibit the recombination of electron-hole pairs, which promote reaction thermodynamics and kinetics for RhB degradation.
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