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Given that the ion‐exchange membrane takes up more than 30% of redox flow battery (RFB) cost, considerable cost reduction is anticipated with the membrane‐free design. However, eliminating the membrane/separator would expose the membrane‐free RFBs to a higher risk of short‐circuits, and the dendrite growth may aggravate this issue. The current strategy based on expanding distances between electrodes...
The commercialization of rechargeable Zn–air batteries (ZABs) relies on the material innovation to accelerate the sluggish oxygen electrocatalysis kinetics. Due to the differentiated mechanisms of reverse processes, i.e., oxygen reduction reaction (ORR) and oxygen evolution reaction (OER), rationally integrating dual sites for bifunctional oxygen electrocatalysis is prerequisite yet remains challenging...
Constructing structural defects is a promising way to enhance the catalytic activity toward the hydrogen evolution reaction (HER). However, the relationship between defect density and HER activity has rarely been discussed. In this study, a series of Pt/WOx nanocrystals are fabricated with controlled morphologies and structural defect densities using a facile one‐step wet chemical method. Remarkably,...
Sodium‐ion batteries (SIBs) have gradually become one of the most promising energy storage techniques in the current era of post‐lithium‐ion batteries. For anodes, transitional metal selenides (TMSe) based materials are welcomed choices , owing to relatively higher specific capacities and enriched redox active sites. Nevertheless, current bottlenecks are blamed for their poor intrinsic electronic...
Switchable spontaneous polarization is the vital property of ferroelectrics, which leads to other key physical properties such as piezoelectricity, pyroelectricity, and nonlinear optical effects, etc. Recently, organic–inorganic hybrid perovskites with 2D layered structure have become an emerging branch of ferroelectric materials. However, most of the 2D hybrid ferroelectrics own relatively low polarizations...
The commercialization of Li‐S batteries as a promising energy system is terribly impeded by the issues of the shuttle effect and Li dendrite. Keggin Al13‐pillared montmorillonite (AlMMT), used as the modified film of the separator together with super‐P and poly (vinylidene fluoride) (PVDF), has a good chemical affinity to lithium polysulfide (LiPS) to retard the polysulfide shuttling, excellent electrolyte...
High‐Temperature Ferromagnetism
In article number 2301513, Zhanbing He and co‐workers show that a large area parallel aluminum‐cobalt oxide nanosheet arrays (PNAs) can be synthesized using a collaborative dealloying and hydrothermal method. The parallel growth of two‐dimensional nanosheets is attributed to a lattice‐matching of the substrate, buffer layer, and nanosheets. Meanwhile, the PNAs exhibit...
Parallel nanomaterials possess unique properties and show potential applications in industry. Whereas, vertically aligned 2D nanomaterials have plane orientations that are generally chaotic. Simultaneous control of their growth direction and spatial orientation for parallel nanosheets remains a big challenge. Here, a facile preparation of vertically aligned parallel nanosheet arrays of aluminum‐cobalt...
With the widespread application of lithium iron phosphate batteries, the production capacity of the yellow phosphorus industry has increased sharply, and the treatment of the highly toxic by‐product PH3 is facing severe challenges. In this study, a 3D copper‐based catalyst (3DCuO/C) that can efficiently decompose PH3 at low temperatures and low oxygen concentrations is synthesized. The PH3 capacity...
Photocatalysts
A 3D Cu‐based PH3 decomposition catalyst with a scaly morphology is synthesized via hydrothermal loading, exhibiting notable efficiency in PH3 decomposition under low‐temperature nd micro‐aerobic conditions. The deactivation of the catalyst is found to be attributable to the formation of Cu3P. In article number 2301169, Riguang Zhang, Fei Wang, Kai Li, and co‐workers suggest the potential...
Direct electrocatalytic reduction of N2 to NH3 under mild conditions is attracting considerable interests but still remains enormous challenges in terms of respect of intrinsic catalytic activity and limited electrocatalytic efficiency. Herein, a photo‐enhanced strategy is developed to improve the NRR activity on Cu single atoms catalysts. The atomically dispersed Cu single atoms supported TiO2 nanosheets...
Broadband infrared (IR) absorption is sought after for wide range of applications. Graphene can support IR plasmonic waves tightly bound to its surface, leading to an intensified near‐field. However, the excitation of graphene plasmonic waves usually relies on resonances. Thus, it is still difficult to directly obtain both high near‐field intensity and high absorption rate in ultra‐broad IR band....
Defect states play an important role in the photovoltaic performance of metal halide perovskites. Particularly, the passivation of surface defects has made great contributions to high‐performance perovskite photovoltaics. This highlights the importance of understanding the surface defects from a fundamental level by developing more accurate and operando characterization techniques. Herein, a strategy...
NIR‐IIa Cell Tracker
In article number 2105362, Jen‐Shyang Ni, Kai Li, and co‐workers design a series of NIR‐II fluorophores through a heteroatom‐inserted electron delocalization strategy, which is used as a NIR‐IIa cell tracker to dynamically track the homing of transplanted stem cells in the acute lung injury model.
Fluorophores with emission in the second near‐infrared (NIR‐II) window have displayed salient advantages for biomedical applications. However, exploration of new luminogens with high NIR‐II fluorescent brightness is still challenging. Herein, based on the “ring‐fusion” strategy, a series of heteroatom‐inserted rigid‐planar cores is proposed to achieve the bathochromic NIR‐II fluorophores with aggregation‐induced...
Exploration of facile strategies for precise regulation of target gene expression remains highly challenging in the development of gene therapies. Especially, a stimuli‐responsive nanocarrier integrated with ability of noninvasive remote control for treating wide types of cancers is rarely developed. Herein, a NIR‐II absorbing semiconducting polymer (PBDTQ) is employed to remotely activate the heat‐inducible...
Managing elastic properties of ABX3 type molecular perovskite ferroelectrics is critical to their future applications since these parameters determine their service durability and reliability in devices. The abundant structural and chemical viability of these compounds offer a convenient way to manipulate their elastic properties through a facile chemical approach. Here, the elastic properties and...
Near‐infrared (NIR) light‐triggered hyperthermia has exhibited promising prospects in oncology therapy due to the unique merits including minimal invasiveness, monitorable, excellent therapeutic effect, and negligible side effects. Especially, the second NIR biowindow (NIR‐II, 1000–1700 nm) with less absorbance and scattering by skin tissue, and deep tissue penetration, has received extensive attention...
Elemental tantalum is a well‐known biomedical metal in clinics due to its extremely high biocompatibility, which is superior to that of other biomedical metallic materials. Hence, it is of significance to expand the scope of biomedical applications of tantalum. Herein, it is reported that tantalum nanoparticles (Ta NPs), upon surface modification with polyethylene glycol (PEG) molecules via a silane‐coupling...
Near‐infrared light‐mediated theranostic agents with superior tissue penetration and minimal invasion have captivated researchers in cancer research in the past decade. Herein, a probe sonication‐assisted liquid exfoliation approach for scalable and continual synthesis of colloidal rhenium disulfide nanosheets, which is further explored as theranostic agents for cancer diagnosis and therapy, is reported...
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