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Large reserves, high capacity, and low cost are the core competitiveness of disordered carbon materials as excellent anode materials for sodium‐ion batteries (SIBs). And the existence and improper treatment of a large number of organic solid wastes will aggravate the burden on the environment, therefore, it is significant to transform wastes into carbon‐based materials for sustainable energy utilization...
Non‐aqueous solvents, in particular N,N‐dimethylaniline (NMP), are widely applied for electrode fabrication since most sodium layered oxide cathode materials are readily damaged by water molecules. However, the expensive price and poisonousness of NMP unquestionably increase the cost of preparation and post‐processing. Therefore, developing an intrinsically stable cathode material that can implement...
The construction of conductive scaffolds is demonstrated to be an ideal strategy to alleviate the volume expansion and dendrite growth of K metal anodes. Nevertheless, the heterogeneous top–bottom deposition behavior caused by incompatible electronic/ionic conductivity of three‐dimensional (3D) skeleton severely hinders its application. Here, a K2Se/Cu conducting layer is fabricated on the Cu foam...
The introduction of electrolyte additives is one of the most potential strategies to improve the performance of potassium metal batteries (PMBs). However, designing an additive that can alter the K+ solvation shell and essentially inhibit K dendrite remains a challenge. Herein, the amyl‐triphenyl‐phosphonium bromide was introduced as an additive to build a stable solid electrolyte interphase layer...
The development of high‐efficiency, robust, and available electrode materials for oxygen evolution reaction (OER) and lithium‐ion batteries (LIBs) is critical for clean and sustainable energy system but remains challenging. Herein, a unique yolk–shell structure of Fe2O3 nanotube@hollow Co9S8 nanocage@C is rationally prepared. In a prearranged sequence, the fabrication of Fe2O3 nanotubes is followed...
Conversion‐alloy sulfide materials for potassium‐ion batteries have always suffered from sluggish kinetics and sulfur loss. In article number 2008133, Kangzhe Cao, Lifang Jiao, and co‐workers propose a strategy of using the confinement and catalyzed effect of Nb2O5 layers to stimulate the reversibility of Sb2S3 and SnS2 anode.
Conversion‐alloy sulfide materials for potassium‐ion batteries (KIBs) have attracted considerable attention because of their high capacities and suitable working potentials. However, the sluggish kinetics and sulfur loss result in their rapid capacity degeneration as well as inferior rate capability. Herein, a strategy that uses the confinement and catalyzed effect of Nb2O5 layers to restrict the...
Ordered 1D metal oxide structure is desirable in thin film solar cells owing to its excellent charge collection capability. However, the electron transfer in 1D electron transporting layer (ETL)‐based devices is still limited to a submicrometer‐long pathway that is vertical to the substrate. Here, an innovative closely packed rutile TiO2 nanowire (CRTNW) network parallel to the facet of fluorine‐doped...
Freestanding and transferable silica nanosheets with thicknesses of ≈5–7 nm are prepared via ethyl acetate‐mediated hydrolysis of silica precursors in aqueous solution. The resulting silica nanosheets have shown many potential applications. For example, they can be used as the support film on the finer mesh grids for transmission electron microscopy imaging and as the precursor for the synthesis of...
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