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Li‐O2 batteries could deliver ultra‐high theoretical energy density compared to current Li‐ion batteries counterpart. The slow cathode reaction kinetics in Li‐O2 batteries, however, limits their electrocatalytic performance. To this end, MoSe2 and Ni0.85Se nanoflakes were decorated in carbon hollow nanoflowers, which were served as the cathode catalysts for Li‐O2 batteries. The hexagonal Ni0.85Se...
The growth of high‐quality halide perovskite single crystals is imperative to study their intrinsic physical properties and to realize high‐performance optoelectronic devices. Here, a room‐temperature solvent evaporation‐induced crystallization (RTSEIC) method is reported based on Le Chatelier's principle, which provides a general strategy to grow halide perovskite single crystals including 3D, 2D,...
This work reports a metal–organic framework (MOF) with less‐coordinated copper dimers, which displays excellent electrochemical CO2 reduction (eCO2RR) performance with an advantageous current density of 0.9 A cm−2 and a high Faradaic efficiency of 71% to C2 products. In comparison with MOF with Cu monomers that are present as Cu1O4 with a coordination number of 3.8 ± 0.2, Cu dimers exist as O3Cu1...