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Alkali metal–sulfur batteries (particularly, lithium/sodium‐ sulfur (Li/Na–S)) have attracted much attention because of their high energy density, the natural abundance of sulfur, and environmental friendliness. However, Li/Na–S batteries still face big challenges, such as limited cycle life, poor conductivity, large volume changes, and the “shuttle effect” caused by the high solubility of Li/Na–polysulfides...
Persistent luminescence (PersL) materials exhibit thermal‐favored optical behavior, enabling their unique applications in security night vision signage, in vivo bioimaging, and optical anti‐counterfeiting. Therefore, developing efficient and color‐tunable PersL materials is significantly crucial in promoting advanced practical use. In this study, hexagonal Zr4+‐doped CsCdCl3 perovskite is synthesized...
Since the linkages structured in covalent organic frameworks (COFs) usually impact the charge transfer behavior during photocatalytic hydrogen evolution reaction (pc‐HER), linkage dependence on charge transfer kinetics should be further claimed. Herein, COFs with N‐based linkages and pyrene‐based building nodes are constructed to enable us to obtain new clues about the charge transfer behavior and...
Nickel (Ni) based materials with non‐metal heteroatom doping are competitive substitutes for platinum group catalyst toward alkaline hydrogen oxidation reaction (HOR). However, the incorporation of non‐metal atom into the lattice of conventional fcc phase Ni can easily trigger a structural phase transformation, forming hcp phase nonmetallic intermetallic compounds. Such tangle phenomenon makes it...
Flexible Zinc‐Ion Batteries
In article number 2207610, Fen Ran and co‐workers report on their study using the salting out property in Hofmeister effect to enhance the mechanical strength and electrochemical stability of the hydrogel electrolytes that exhibit tensile stress of 1.5 MPa and ionic conductivity of 2.35 × 10−2 S cm−1 and undergo over 9300 charging and discharging cycles when applied in...
With the development of flexible and wearable electronic devices, it is a new challenge for polymer hydrogel electrolytes to combine high mechanical flexibility and electrochemical performance into one membrane. In general, the high content of water in hydrogel electrolyte membranes always leads to poor mechanical strength, and limits their applications in flexible energy storage devices. In this...
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