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Sodium‐ion batteries (SIBs) have received increasing attention because of their appealing cell voltages and cost‐effective features. However, the atom aggregation and electrode volume variation inevitably deteriorate the sodium storage kinetics. Here a new strategy is proposed to boost the lifetime of SIB by synthesizing sea urchin‐like FeSe2/nitrogen‐doped carbon (FeSe2/NC) composites. The robust...
Electrocatalysts based on Fe and other transition metals are regarded as most promising candidates for accelerating the oxygen evolution reaction (OER), whereas whether Fe is the catalytic active site for OER is still under debate. Here, unary Fe‐ and binary FeNi‐ based catalysts, FeOOH and FeNi(OH)x, are produced by self‐reconstruction. The former is a dual‐phased FeOOH, possessing abundant oxygen...
Iron oxyhydroxide has been considered an auspicious electrocatalyst for the oxygen evolution reaction (OER) in alkaline water electrolysis due to its suitable electronic structure and abundant reserves. However, Fe‐based materials seriously suffer from the tradeoff between activity and stability at a high current density above 100 mA cm−2. In this work, the Ce atom is introduced into the amorphous...
The exploration of moiré superlatticesholds promising potential to uncover novel quantum phenomena emerging from the interplay of atomic structure and electronic correlation . However, the impact of the moiré potential modulation on the number of twisted layers has yet to be experimentally explored. Here, this work synthesizes a twisted WSe2 homotrilayer using a dry‐transfer method and investigates...
Perovskite solar cells (PSCs) have emerged as one of the most promising and competitive photovoltaic technologies, and doctor‐blading is a facile and robust deposition technique to efficiently fabricate PSCs in large scale, especially matching with roll‐to‐roll process. Herein, it demonstrates the encouraging results of one‐step, antisolvent‐free doctor‐bladed methylammonium lead iodide (CH3NH3PbI...