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Although TiNb2O7 (TNO) with comparable operating potential and ideal theoretical capacity is considered to be the most ideal replacement for negative Li4Ti5O12 (LTO), the low ionic and electronic conductivity still limit its practical application as satisfactory anode for lithium‐ion batteries (LIBs) with high‐power density. Herein, TNO nanoparticles modified by Cerium (Ce) with outstanding electrochemical...
Developing intelligently targeted drugs with low side effects is urgent for cancer treatment. Toward this goal, a tumor‐specific cascade‐activating smart prodrug system consisting of a G‐quadruplex(G4)‐modulated tumor‐targeted DNA vehicle and a well‐designed cellular stimuli‐responsive ligand‐drug conjugates (LDCs) is proposed. An original “donor–acceptor” binary fluorescent ligand, with ultrahigh...
Piezocatalysis has increasingly gained prominence due to its enormous potential for addressing energy shortages and environmental pollution issues. Nonetheless, the low piezocatalytic activity of state‐of‐the‐art materials seriously inhibits the practical applications of piezocatalysis. Here, it is proposed to greatly enhance the piezocatalytic activity for a perovskite ferroelectric, i.e., Sm‐doped...
TiNb2O7, as a promising alternative of Li4Ti5O12, exhibits giant potential as low‐temperature anode due to its higher theoretical capacity and comparable structural stability. However, the sluggish electronic conductivity still remains a challenge. Herein, bulk modification of Cu+ doping in porous TiNb2O7 microsphere is proposed via a simple one‐step solvothermal method with subsequent calcination...
Precise control of molecular assembly is of great significance in the application of functional molecules. This work has systematically investigated the humidity effect in bubble‐assisted molecular assembly. This work finds humidity is critical in the evolution of the soft confined space, leading to the formation of microscale liquid confined space under high humidity, and nanoscale liquid confined...
Chemical communication via neurotransmitters is central to brain functions. Nevertheless, in vivo real‐time monitoring of neurotransmitters released in the brain, especially the electrochemically inactive molecules, remains a great challenge. In this work, a novel needle field‐effect transistor (FET) microsensor based on an acupuncture needle is proposed, which is demonstrated to be capable of real‐time...
The lithium–oxygen (Li–O2) battery with high energy density of 3860 Wh kg−1 represents one of the most promising new secondary batteries for future electric vehicles and mobile electronic devices. However, slow oxygen reduction/oxygen evolution (ORR/OER) reaction efficiency and unstable cycling performance restrain the practical applications of the Li–O2 battery. Herein, Ru‐modified nitrogen‐doped...
Cancer Phototherapy
The endoplasmic reticulum (ER) plays an important role in protein synthesis, processing and secretion. ER‐targeting phototherapy significantly amplifies ER stress, promotes tumor antigen release, and elicits a robust immunogenic cell death. In article number 2202728 by Weidong Wang, Junping Wang, Shenglin Luo, and co‐workers, a small molecular heptamethine cyanine photosensitizer...
Cancer phototherapy activates immunogenic cell death (ICD) and elicits a systemic antitumor immune response, which is an emerging approach for tumor treatment. Most available photosensitizers require a combination of immune adjuvants or checkpoint inhibitors to trigger antitumor immunity because of the immunosuppressive tumor microenvironment and the limited phototherapeutic effect. A class of tumor‐targeting...
Nanostructured materials with high surface area and low coordinated atoms present distinct intrinsic properties from their bulk counterparts. However, nanomaterials’ nucleation/growth mechanism during the synthesis process and the changes of the nanomaterials in the working state are still not thoroughly studied. As two indispensable methods, X‐ray absorption spectroscopy (XAS) provides nanomaterials’...
Heme enzymes, with the pentacoordinate heme iron active sites, possess high catalytic activity and selectivity in biosensing applications. However, they are still subject to limited catalytic stability in the complex environment and high cost for broad applications in electrochemical sensing. It is meaningful to develop a novel substitute that has a similar structure to some heme enzymes and mimics...
Carbon‐based single‐atom catalysts (CSACs) have recently received extensive attention in catalysis research. However, the preparation process of CSACs involves a high‐temperature treatment, during which metal atoms are mobile and aggregated into nanoparticles, detrimental to the catalytic performance. Herein, an ion‐imprinting derived strategy is proposed to synthesize CSACs, in which isolated metal–nitrogen–carbon...
In article number 2004925, Yan Yu, Yanglong Hou, and co‐workers report a hierarchical porous Na3V2(PO4)2O2F hollow nanosphere material with fast ionic/electronic conductivities, easy and continuous electrolyte supplement and robust electrode integrity properties, kinetically accelerated sodium‐ion storage behavior of high‐capacity, high‐rate and long‐life cycling.
Sodium‐ion batteries (SIBs) are receiving considerable attention as economic candidates for large‐scale energy storage applications. Na3V2(PO4)2O2F (NVPF) is intensively regarded as one of the most promising cathode materials for SIBs, due to its high energy density, fast ionic conduction, and robust Na+‐super‐ionic conductor (NASICON) framework. However, poor rate capability ascribed to the intrinsically...
Free‐standing electrodes with high energy density and long life are of critical importance to the development of lithium‐ion batteries (LIBs) for flexible/wearable electronic devices. Herein, the free‐standing and foldable V2O3/multichannel carbon nanofibers (V2O3/MCCNFs) composites are prepared via electrospinning and subsequent carbonization. Such V2O3/MCCNFs electrode delivers a superior capacity...
Highly stable and low‐cost electrocatalysts with multi‐electrocatalytic activities are in high demand for developing advanced energy conversion devices. Herein, a unique trifunctional amorphous iron‐borate electrode is developed, which is capable of boosting hydrogen evolution, oxygen evolution, and oxygen reduction reactions simultaneously. The amorphous iron borate can self‐assemble into well‐defined...
In article number 1802829, Zhongtao Li, Mingbo Wu, and co‐workers report a new type of amorphous iron‐borate nanolattice on Ni foam as a self‐supported electrode in a zinc‐air battery and water splitting. The well‐defined amorphous electrode shows exceptional activity in terms of the oxygen evolution reaction, hydrogen evolution reaction, and oxygen reduction reaction, which could be potentially used...
Li metal is considered as an ideal anode for Li‐based batteries. Unfortunately, the growth of Li dendrites during cycling leads to an unstable interface, a low coulombic efficiency, and a limited cycling life. Here, a novel approach is proposed to protect the Li‐metal anode by using a uniform agarose film. This natural biopolymer film exhibits a high ionic conductivity, high elasticity, and chemical...
The development of cost‐effective catalysts to replace noble metal is attracting increasing interests in many fields of catalysis and energy, and intensive efforts are focused on the integration of transition‐metal sites in carbon as noble‐metal‐free candidates. Recently, the discovery of single‐atom dispersed catalyst (SAC) provides a new frontier in heterogeneous catalysis. However, the electrocatalytic...
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