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Triggering reversible lattice oxygen redox (LOR) in oxide cathodes is a paradigmatic approach to overcome the capacity ceiling determined by orthodox transition‐metal (TM) redox. However, the LOR reactions in P2‐structured Na‐layered oxides are commonly accompanied by irreversible nonlattice oxygen redox (non‐LOR) and large local structural rearrangements, bringing about capacity/voltage fading and...
It is an effective strategy to develop novel electrocatalysts with controllable defects to enhance their electrocatalytic activity and stability. However, how to precisely design these catalysts on the atom scale remains very difficult. Herein, several vacancy‐dependent CoZnxMn2–xO4 catalysts are prepared through tailoring the concentration of Zn ions. The in situ activation of the obtained products...
Whispering gallery mode (WGM) microresonators have been used as optical sensors in fundamental research and practical applications. The majority of WGM sensors are passive resonators that require complex systems, thereby limiting their practicality. Active resonators enable the remote excitation and collection of WGM‐modulated fluorescence spectra, without requiring complex systems, and can be used...
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