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Capacity degradation and destructive hazards are two major challenges for the operation of lithium‐ion batteries at high temperatures. Although adding flame retardants or fire extinguishing agents can provide one‐off self‐protection in case of emergency overheating, it is desirable to directly regulate battery operation according to the temperature. Herein, smart self‐protecting aqueous lithium‐ion...
Early warning sensors rapidly monitor critical temperatures, humidity, and fires, which are crucial to reduce or avoid natural disasters in complex environments, such as fire or water disasters. Here, a highly sensitive, readable, and dual‐functional sensor is designed for a fast‐response fire alarm and rapid humidity detection based on sustainable biological films (named MSCG films). The MSCG films...
The therapeutic exploration of nano‐zirconia semiconductor largely remains untouched in the field of fundamental science to date. Here, a robust nano‐sonosensitizer of ZrO2−x@Pt is strategically formulated by in situ growth of Pt nanocrystal onto the surface of oxygen‐deficient ZrO2−x. Compared to 3.09 eV of nano‐ZrO2−x, the bandgap of ZrO2−x@Pt Schottky junction is narrowed down to 2.74 eV. The band...
Metal‐halide perovskites have drawn profuse attention during the past decade, owing to their excellent electrical and optical properties, facile synthesis, efficient energy conversion, and so on. Meanwhile, the development of information storage technologies and digital communications has fueled the demand for novel semiconductor materials. Low‐dimensional perovskites have offered a new force to propel...
Zinc (Zn) metal possesses broad prospects as an anode for aqueous zinc‐ion batteries (AZIBs) due to its considerable theoretical capacity of 820 mAh g‐1. However, the Zn anode suffers from dendrite growth and side reactions during Zn stripping/plating. Herein, a Prussian blue analog of copper hexacyanoferrate (CuHCF) with a 3D open structure and rich polar groups (CN) is coated on Zn foil as a solid‐state...
Surface strains are necessary to optimize the oxygen adsorption energy during the oxygen reduction reaction (ORR) in the four‐electron process, but the surface strains regulation for ORR in the two‐electron process to produce hydrogen peroxide (H2O2) is rarely studied. Herein, it is reported that the tensile strained B‐doped Ni nanoparticles on carbon support (Ni‐B@BNC) could enhance the adsorption...
High density and skin effect restrict the research progress of metal predominated electromagnetic wave absorbing (EMA) materials. Although some works try to solve it, they do not focus on the metal itself and do not involve the optimization of the active site of the inherent defects of the metal. In this work, the modulation of morphology, composition, interface, defects, and conductivity is achieved...
Antimonene and bismuthene are promising members of the 2D pnictogen family with their tunable band gaps, high electronic conductivity, and ambient stability, making them suitable for electronic and optoelectronic applications. However, semi‐metal to semiconductor transition occurs only in the mono/bilayer regime, limiting their applications. Covalent functionalization is a versatile method for tuning...
A compact, stable, sustainable, and high‐energy density power supply system is crucial for the engineering deployment of mobile electromechanical devices/systems either at the small‐ or large‐scale. This work proposes a spiral‐based mechanical energy storage scheme utilizing the newly synthesized 2D diamane. Atomistic simulations show that diamane spiral can achieve a high theoretical gravimetric...
The richened reactive oxygen species (ROS) and their derived excessive inflammation at bone injured sites hinder osteogenesis of endosseous Ti‐based implants. Herein, anti‐oxidized polydopamine (PDA) is deposited on hydrothermal growth formed hydroxyapatite (HA) nanorods on Ti to form a core‐shell structural nanorod‐like array with HA as a core and PDA as an amorphous shell (PDA@HA), showing not only...
Nanowire Assemblies
In article number 2201968, Harish Bhaskaran and co‐workers develop a universal and deterministic way of assembling single nanowires with a placement precision below 1 micron. They further demonstrate first‐of‐its‐kind devices in the nanowire realm, heralding new opportunities and large‐scale nanowire integration.
Solar‐to‐Hydrogen Conversion
In article number 2202109, Chao Gu, Shi‐Kui Han, and co‐workers demonstrate an all‐in‐one strategy for the selective‐epitaxial hybridization of unique tripartite semiconducting sulfides, denoted as CuInS2–Cd(In) S–MoS2. The integrated architectures exhibit superior solar‐to‐hydrogen conversion performance due to their enhanced capabilities for solar absorption and charge...
Energy Storage
In article number 2203887, Haifei Zhan, Gang Zhang, Chaofeng Lü, and co‐workers propose a 2D diamane‐based planar spiral as an alternative low‐carbon footage energy supplier for micro‐/nano‐scale devices/systems based on its mechanical deformation. Supported by the theoretical analysis, atomistic investigations reveal that its gravimetric energy density can reach 2.03 MJ kg−1 or 564...
Tandem Solar Cells
Light‐induced phase segregation is the chief culprit for the open‐circuit voltage deficit and photo‐instability in mix‐halide perovskite solar cells with wide‐bandgap. In article number 2203319, Xuegong Yu and co‐workers report a highly efficient and photo‐stable wide‐bandgap perovskite solar cell with a top‐ranking open‐circuit voltage of 1.24 V realized by defects management in...
Vaccines have been one of the most powerful weapons to defend against infectious diseases for a long time now. Subunit vaccines are of increasing importance because of their safety and effectiveness. In this work, a Bacillus amyloliquefaciens spore@zeolitic imidazolate framework‐8 (ZIF‐8) vaccine platform is constructed. The ovalbumin (OVA) is encapsulated in the ZIF‐8 shells as a model antigen to...
Atomically dispersed iron immobilized on nitrogen‐doped carbon catalyst has attracted enormous attention for CO2 electroreduction, but still suffers from low current density and poor selectivity. Herein, atomically dispersed FeN5 active sites supported on defective N‐doped carbon successfully formed by a multistep thermal treatment strategy with the aid of dicyandiamide are reported. This dual‐functional...
The design of new remediation strategies and materials for treating saline–alkaline soils is of fundamental and practical importantance for many applications. Conventional soil remediation strategies mainly focus on the development of fertilizers or additives for water, nutrient, and heavy metal managements in soils, but they often overlook a soil sensing function for early detection of salinization/alkalization...
With the introduction of techniques to grow highly functional nanowires of exotic materials and demonstrations of their potential in new applications, techniques for depositing nanowires on functional platforms have been an area of active interest. However, difficulties in handling individual nanowires with high accuracy and reliability have so far been a limiting factor in large‐scale integration...
The design and synthesis of advanced semiconductors is crucial for the full utilization of solar energy. Herein, colloidal selective‐epitaxial hybrid of tripartite semiconducting sulfides CuInS2Cd(In)SMoS2 heteronanostructures (HNs) via lateral‐ and vertical‐epitaxial growths, followed by cation exchange reactions, are reported. The lateral‐epitaxial CuInS2 and Cd(In)S enable effective visible to...
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