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The lack of acid‐proof high‐potential cathode largely limits the development and competitiveness of proton batteries. Herein, the authors systematically investigated six dihydroxynaphthalenes (DHNs) and found that 2,6‐DHN delivered the best cathode performance in proton battery with the highest redox potential (0.84 V, vs SHE) and a specific capacity of 91.6 mAh g−1 at 1 A g−1. In situ solid‐state...
Supramolecular hydrogels involved macrocycles have been explored widely in recent years, but it remains challenging to develop hydrogel based on solitary macrocycle with super gelation capability. Here, the construction of lantern[33]arene‐based hydrogel with low critical gelation concentration (0.05 wt%), which can be used for efficient oil–water separation, is reported. The lantern[33]arenes self‐assemble...
Currently, the commercial separator (Celgard2500) of lithium‐ion batteries (LIBs) suffers from poor electrolyte affinity, mechanical property and thermal stability, which seriously affect the electrochemical performances and safety of LIBs. Here, the composite separators named PVDF‐HFP/TiN for high‐safety LIBs are synthesized. The integration of PVDF‐HFP and TiN forms porous structure with a uniform...
Benefiting from the proton's small size and ultrahigh mobility in water, aqueous proton batteries are regarded as an attractive candidate for high‐power and ultralow‐temperature energy storage devices. Herein, a new‐type C4N polymer with uniform micropores and a large specific surface area is prepared by sulfuric acid‐catalyzed ketone amine condensation reaction and employed as the electrode of proton...
2D transition‐metal carbides and nitrides, named MXenes, are promising materials for energy storage, but suffer from aggregation and restacking of the 2D nanosheets, which limits their electrochemical performance. In order to overcome this problem and realize the full potential of MXene nanosheets, a 3D MXene foam with developed porous structure is established via a simple sulfur‐template method,...
In article number 1904293, Bin Xu and co‐workers prepare a flexible and freestanding 3D porous MXene foam by a simple sulfur‐template method, which enhances the electrochemical performance when directly used as anode in lithium‐ion batteries, by facilitating the electron/Li+ transfer and offering massive active sites for lithium storage.
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