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Mechano‐Nociceptor Systems
In article number 2200185, Ye Zhou and co‐workers develop a diffusive memristor with better behaviors of conductive filaments and higher device uniformity based on 2D h‐BN, which could be used as an artificial nociceptor to mimic biological nociceptor properties. Moreover, a self‐powered mechano‐nociceptor is demonstrated by connecting a self‐made triboelectric nanogenerator...
CO2 Reduction
In article number 2107799, Wenyu Huang, Sen Zhang, Long Qi, and co‐workers achieve a benchmark study of various single‐atom transition metal catalysts for electrochemical reduction of CO2 to CO. The single‐atom Ni anchored on ordered mesoporous nitrogen assembly carbon catalyst, Ni‐NAC, possesses not only high CO selectivity and current density, but also high durability in a broad potential...
Spontaneous Lattice Inversion
In article number 2200057, Zhiqiang Liu, Shenyuan Yang, Yong Zhang, Peng Gao, and co‐workers confirm the polarity of AlN on sapphire prepared by metal–organic chemical vapor deposition is not inherited from the nitrides/sapphire interface as widely accepted, instead, experiences a spontaneous polarity inversion. Furthermore, a vertical 2D electron gas is revealed at the...
Sodium-Ion Capacitors
In article number 2107890, Jieshan Qiu, Le Yu, and co‐workers report the design of magnesium titanate hierarchical hollow spheres embedded in carbon nanofibers by electrospinning for sodium‐ion capacitors (NICs). Three‐dimensional conductive carbon framework together with the expanded interlayer spacing of titanate hierarchical hollow spheres via the pillared Mg2+ ions expose...
Synergistic therapy for malignant tumors has been developed in the past. However, several disadvantages that are associated with the applied inorganic nanoagents cannot be avoided, including intrinsic systemic toxicity, immunosuppression, and low therapeutic efficiency. Herein, a biocompatible, multifunctional, inorganic nanoagent that simultaneously integrates chemodynamic, starvation, and photothermal...
Solid‐state metal batteries are attracting unprecedented concern because of their high energy density and safety. However, their service life, especially at high specific density, is hindered by the undesirable reversibility of metal anodes, owing to the inhomogeneous ion distribution and awkward charge transfer dynamics at the electrode/electrolyte interface. In this work, it is well demonstrated...
The thermal interface materials (TIMs) used for improving thermal contacts are considered in terms of the performance, performance consideration criteria, performance evaluation methods, and material development approaches. The performance is described mainly by the thermal contact conductance, which refers to the conductance across the thermal contact surfaces that sandwiches the TIM. This conductance...
For effective hydrogen production by water splitting, it is essential to develop earth‐abundant, highly efficient, and durable electrocatalysts. Herein, the authors report a bifunctional electrocatalyst composed of hollow CoSx and Ni–Fe based layered double hydroxide (NiFe LDH) nanosheets for efficient overall water splitting (OWS). The optimized heterostructure is obtained by the electrodeposition...
Anode‐supported protonic ceramic fuel cells (PCFCs) are highly promising and efficient energy conversion systems. However, several challenges need to be overcome before these systems are used more widely, including the poor sintering of recently developed proton‐conducting oxides and the decreased proton conductivity due to detrimental reactions between the nickel from anode and the electrolyte occurring...
Zn–air battery technologies have received increasing attention, while the application is hindered by the sluggish kinetics of the oxygen evolution reaction (OER) and oxygen reduction reaction (ORR). In order to explore an efficient method to fabricate a high‐performance electrocatalyst via modification of advanced nanostructure, a coaxial electrospinning method with in‐situ synthesis and subsequent...
Triple‐cation mixed‐halide perovskites have attracted considerable attention due to their excellent photovoltaic properties and enhanced stability, though the power conversion efficiency (PCE) is still far below the theoretical expectation. In order to understand the microscopic mechanisms responsible for the gap, a Cs0.05(FA0.85MA0.15)0.95Pb(I0.85Br0.15)3 (CsFAMA)‐based solar cell with respectful...
Previous studies on syntheses of metal‐organic frameworks (MOFs) for photocatalytic CO2 reduction are mainly focused on the exquisite control over the net topology and the functionality of metal clusters/organic building blocks. This contribution demonstrates that the rational design of MOF‐based photocatalyst can be further extended to the hierarchical structure at micrometer scales well beyond the...
The surface Fermi level pinning effect promotes the formation of metal‐independent Ohmic contacts for the high‐speed GaSb nanowires (NWs) electronic devices, however, it limits next‐generation optoelectronic devices. In this work, lead‐free all‐inorganic perovskites with broad bandgaps and low work functions are adopted to decorate the surfaces of GaSb NWs, demonstrating the success in the construction...
The switching variability caused by intrinsic stochasticity of the ionic/atomic motions during the conductive filaments (CFs) formation process largely limits the applications of diffusive memristors (DMs), including artificial neurons, neuromorphic computing and artificial sensory systems. In this study, a DM device with improved device uniformity based on well‐crystallized two‐dimensional (2D) h...
Anatase TiO2 is a promising anode material for lithium‐ion batteries (LIBs) and sodium‐ion batteries (SIBs) due to its high specific capacity, low cost, and excellent cycle stability. However, low electrical conductivity and poor Na+ ion transport in TiO2 limit its practical applications. Here, substantially boosted Na+ ion transport and charge transfer kinetics are demonstrated by constructing a...
Aqueous zinc ion hybrid capacitors (aZHCs) are of great potential for large‐scale energy storage and flexible wearable devices, of which the specific capacity and energy density need to be further enhanced for practical applications. Herein, a urea‐mediated foaming strategy is reported for the efficient synthesis of monoliths consisting of nitrogen‐enriched mesoporous carbon nanosheets (NPCNs) by...
Metallic zinc anodes in zinc‐ion batteries suffer from problematic Zn dendrite chemistry. Previous works have shown that preferred‐orientation crystal planes can help dendrite‐free metal anodes. This work reports a nanothickness (≈570 nm) AgZn3 coating to regulate the Zn growth. First, AgZn3@Zn anode avoids the problem, in Ag@Zn anode, that the rate of electrochemical Ag‐Zn alloying is slower than...
Fabrication of organic–metal‐halide perovskite micro‐nano array structures draws attention to the potential application in polarized light, high‐resolution X‑ray imaging, light‐emitting diodes, and lasers. However, it is still challenging to achieve the growth of controllable long‐range ordered nanostructure arrays by chemical solution‐based techniques. Herein, controllable epitaxial growth of long‐range...
The outer membrane (OM) of gram‐negative bacteria is highly asymmetric. The outer leaflet comprises lipopolysaccharides (LPS) and the inner leaflet phospholipids. Here, it is shown that the outer membrane lipid bilayer (OMLB) of Escherichia coli can be reconstructed as a droplet interface bilayer (DIB), which separates two aqueous droplets in oil. The trimeric porin OmpF is inserted into the model...
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