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Modulating the coordination configuration of single Fe atom has been an efficient strategy to strengthen the redox dynamics for lithium‐sulfur batteries (LSBs) but remains challenging. Herein, the single Fe atom is functioned with nitrogen and carbon atoms in the first shell, and simultaneously, oxidized sulfur (─SOx) in the second shell, which presents a lower antibonding state and well address the...
Materials with various single‐transition metal atoms dispersed in nitrogenated carbons (M─N─C, M = Fe, Co, and Ni) are synthesized as cathodes to investigate the electrocatalytic behaviors focusing on their enhancement mechanism for performance of Li–S batteries. Results indicate that the order of both electrocatalytic activity and rate capacity for the M─N─C catalysts is Co > Ni > Fe, and the...
Ultrasensitive Multifunctional Electronic Skin
In article number 2304004, Junshan Liu and co‐workers present an environment‐adaptable and ultrasensitive multifunctional e‐skin by using crack‐localization strategy. Cracked part and non‐cracked serpentine part are used for sensing strain and temperature, respectively. The e‐skin can be used in harsh environments, therefore it is of great potential for...
Multifunctional electronic skins (e‐skins) that can sense various stimuli have demonstrated increasing potential in many fields. However, most e‐skins are human‐oriented that cannot work in hash environments such as high temperature, underwater, and corrosive chemicals, impairing their applications, especially in human‐machine interfaces, intelligent machines, robotics, and so on. Inspired by the...
This work reports a metal–organic framework (MOF) with less‐coordinated copper dimers, which displays excellent electrochemical CO2 reduction (eCO2RR) performance with an advantageous current density of 0.9 A cm−2 and a high Faradaic efficiency of 71% to C2 products. In comparison with MOF with Cu monomers that are present as Cu1O4 with a coordination number of 3.8 ± 0.2, Cu dimers exist as O3Cu1...
2D materials have attracted great interest since the report of graphene. However, because of the fragile stability of ultra‐thin nanosheets, most studies are restricted to sheets maintained by strong covalent or coordination bonds. The research on which kind of bonds can maintain the free‐standing existence of 2D nanosheets is still of great significance. Recently, 2D ionic salts are successfully...
Owing to the interacted anion and cation redox dynamics in Li2MnO3, the high energy density can be obtained for lithium‐rich manganese‐based layered transition metal (TM) oxide [Li1.2Ni0.2Mn0.6O2, LNMO]. However, irreversible migration of Mn ions and oxygen release during highly de‐lithiation can destroy its layered structure, leading to voltage and capacity decline. Herein, non‐TM antimony (Sb) is...
Renewable solar‐driven carbon dioxide (CO2) conversion to highly valuable fuels is an economical and prospective strategy for both the energy crisis and ecological environment disorder. However, the selectivity and activity of current photocatalysts have great room for improvement due to the diversification and complexity of products. Here, an ambient‐stable 2D/2D Co2P@BP/g‐C3N4 heterojunction is...
Tumor microenvironment (TME)‐activatable phototheranostics is highly desirable in cancer management but still remains challenging for clinical applications owing to the lack of multifunctional theranostic agents and the limited tissue penetration depth. Reported here is an “all‐in‐one” phototheranostic platform based on near‐infrared II (NIR‐II) dual‐plasmonic Au@Cu2−xSe core‐shell nanocrystals (dpGCS...
Hydrogen Evolution Reaction
In article number 2103866, Weiyong Yuan, Chang Ming Li, and co‐workers report the synthesis of high‐density macropores‐oriented CoP‐impregnated 3‐D N‐doped carbon‐sheets nanostructure via self‐assembly, demonstrating superior hydrogen evolution reaction catalytic performance even compared to commercial Pt/C, and thus great potential for industry‐scale hydrogen production...
Cell polarization exists in a variety of tissues to regulate cell behaviors and functions. Space constraint (spatially limiting cell extension) and adhesion induction (guiding adhesome growth) are two main ways to induce cell polarization according to the microenvironment topographies. However, the mechanism of cell polarization induced by these two ways and the downstream effects on cell functions...
3D ZIF‐67‐particles‐impregnated cellulose‐nanofiber nanosheets with oriented macropores are synthesized via directional‐freezing‐assisted in situ self‐assembly, and converted to 3D CoP‐nanoparticle (NP)‐embedded hierarchical, but macropores‐oriented, N‐doped carbon nanosheets via calcination and phosphidation. The obtained nanoarchitecture delivers overpotentials at 10 and 50 mA cm−2 and Tafel slope...
In article number 2101434, Ming Li and co‐workers propose a CMOS‐compatible Light‐stimulated Porphyrin‐coated Silicon Nanowire Field Effect Transistor (LPSNFET) to form the complementary photo‐synapses with only two CMOS‐like transistors. LPSNFET exhibits five‐fold improvement in photo sensitivity compared to the bare silicon nanowire devices. Complementarily behaviors can be realized by modulating...
Neuromorphic computing has emerged as the high‐energy‐efficiency and intelligent solution for processing sensory data. As a potential alternative to neuromorphic computing, photo‐excited synaptic systems can integrate the functions of optoelectronic sensing and synaptic computing to realize the low‐power and high‐performance visual perception. However, one major challenge in high‐efficient photo‐excited...
In article number 2006496, Liang Li, Guanghai Li, and co‐workers synthesize silicon‐based semiconductor Si2Te3 crystals using a chemical vapor deposition technique. The combined features of silicon and layered structure bridge the 2D materials family and silicon‐based materials family together, while the intrinsic defects in Si2Te3 yield ultrawide photoluminescence spectra and broadband spectral response...
Silicon‐based semiconductor materials dominate modern technology for more than half a century with extraordinary electrical‐optical performance and mutual processing compatibility. Now, 2D materials have rapidly established themselves as prospective candidates for the next‐generation semiconductor industry because of their novel properties. Considering chemical and processing compatibility, silicon‐based...
Photocatalysis technology using solar energy for hydrogen (H2) production still faces great challenges to design and synthesize highly efficient photocatalysts, which should realize the precise regulation of reactive sites, rapid migration of photoinduced carriers and strong visible light harvest. Here, a facile hierarchical Z‐scheme system with ZnIn2S4/BiVO4 heterojunction is proposed, which can...
Perforated ultrathin Pd nanosheets with crystalline/amorphous heterostructures are rationally synthesized to offer a large electrochemically active surface area of 172.6 m2 g−1 and deliver a 5.6 times higher apparent reaction rate in comparison to commercial Pd/C, thus offering a facile confined growth method to generate superior catalysts.
Microalgae are an attractive feedstock organism for sustainable production of biofuels, chemicals, and biomaterials, but the ability to rationally engineer microalgae to enhance production has been limited. To enable the evolution‐based selection of new hyperproducing variants of microalgae, a method is developed that combines phase‐transitioning monodisperse gelatin hydrogel droplets with commercial...
Is vanadium dioxide (VO2) an all‐around champion? In article number 1802025, Ming Li, Yi Long, and co‐workers from Nanyang Technological University Singapore summarized the diverse applications of VO2 by different input and output stimuli‐responses. VO2 is a textbook example of a phase‐transition material that can switch in response to thermal, optical, electrical, magnetic, electrochemical, and mechanical...
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