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Edge Reconstruction
An unprecedented U‐edge reconstruction with the lowest energy is revealed to occur easily in the bilayer phosphorene. Such U‐edge reconstruction exhibits unexpectedly ultrafast electronic and thermal transport, nearly without edgeless scattering. More information can be found in article number 2105130 by Junfeng Gao, Gang Zhang, and co‐workers.
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...
The ever‐increasing development of flexible and wearable electronics has imposed unprecedented demand on flexible batteries of high energy density and excellent mechanical stability. Rechargeable lithium (Li) metal battery shows great advantages in terms of its high theoretical energy density. However, the use of Li metal anode for flexible batteries faces huge challenges in terms of its undesirable...
A strategy of lattice‐reversible binary intermetallic compounds of metallic elements is proposed for applications in flexible lithium‐ion battery (LIB) anode with high capacity and cycling stability. First, the use of metallic elements can ensure excellent electronic conductivity and high capacity of the active anode substance. Second, binary intermetallic compounds possess a larger initial lattice...
Water in motion presented in natural systems contains a rich source of renewable mechanical energy. Harvesting this water energy to trigger the generation of reactive oxygen species (ROS) for water purification is a desirable yet underexplored solution. Herein, the authors report a self‐powered water motion triggered Fenton‐like reaction system for wastewater treatment through the piezo‐activation...
Boosting the replacement of traditional NH3 production (Haber–Bosch process) with photocatalytic technology is of great importance for energy and environment remediation. Herein, to develop a photocatalyst with efficient charge separation and abundant reactive sites for photocatalytic N2 fixation, a biomass‐induced diphase‐carbon doping strategy is proposed by adding lotus root starch which can be...
Aluminum–air batteries (AABs) are deemed as a potential clean energy storage device. However, exploiting high‐efficiency and stable oxygen reduction reaction (ORR) electrocatalysts in AABs is still a challenge. Iron phthalocyanine (FePc) shows a great prospect in ORR but still far from Pt‐based catalysts. Here, the hybrid electrocatalysts of monolayer FePc and hollow N,S‐doped carbon spheres (HNSCs)...
Owing to the increasing power density of miniaturized and high‐frequency electronic devices, flexible thermal interface materials (TIMs) with the electromagnetic interference (EMI) shielding property are in urgent demand to maintain the system performance and reliability. Recently, carbon‐based TIMs receive considerable attention due to the ultrahigh intrinsic thermal conductivity (TC). However, the...
Airborne particulate matter (PM) pollutants, especially with nanoscale size, have caused serious public health issues. The global demand for high‐performance and recyclable face masks is increasing dramatically, especially during the COVID‐19 pandemic. However, present masks suffer from low‐efficiency interception of PM0.3/pathogen, limited air permeability, and incapacity to reuse and recycle. Here,...
Single‐atom catalysts (SACs) are attractive candidates for oxygen reduction reaction (ORR). The catalytic performances of SACs are mainly determined by the surrounding microenvironment of single metal sites. Microenvironment engineering of SACs and understanding of the structure–activity relationship is critical, which remains challenging. Herein, a self‐sacrificing strategy is developed to synthesize...
Metal–Air Batteries
In article number 2105594, Miao Yu, Jie Zhang, and co‐workers report the development of iron phthalocyanine (FePc) anchored onto N,S–doped hollow carbon spheres (HNSCs) to form FePc@HNSC. The charge distribution and d–band center of Fe atoms can be efficiently optimized. The material is applied as an efficient oxygen reduction electrocatalyst for aluminum–air batteries.
Lithium–Ion Batteries
In article number 2105172, Jiaping Wang and co‐workers propose lattice‐reversible binary intermetallic compounds with zinc blende structure as a promising anode material for high‐performance flexible lithium–ion batteries. The micron‐sized indium antimonide/carbon nanotube electrodes with low volume expansion demonstrate outstanding cycle stability, rate performance, and flexibility...
In the present work the authors show that anodic TiO2 nanotubes (NT) show excellent harvesting properties for Pt single atoms (Pt SAs) from highly dilute Pt solutions. The tube walls of anodic nanotubes, after adequate annealing to anatase, provide ample of suitable trapping sites—that is, surface Ti3+‐Ov (Ov: oxygen vacancy) defects that are highly effective to extract and accumulate Pt in the form...
Supramolecular assemblies are an emerging class of nanomaterials for drug delivery systems (DDS), while their unintended retention in the biological milieu remains largely unsolved. To realize the prompt clearance of supramolecular assemblies, the bioorthogonal reaction to disassemble and clear the supramolecular assemblies within living cells is investigated here. A series of tetrazine‐capped assembly...
Pancreatic ductal adenocarcinoma (PDAC) is an intractable malignancy with a dismal survival rate. Recent combination therapies have had a major impact on the improvement of PDAC prognosis. Nevertheless, clinically used combination regimens such as FOLFIRINOX and gemcitabine (Gem)/nab‐paclitaxel still face major challenges due to lack of the safe and ratiometric delivery of multiple drugs. Here, a...
Edge termination plays a vital role in determining the properties of 2D materials. By performing compelling ab initio simulations, a lowest‐energy U‐edge [ZZ(U)] reconstruction is revealed in the bilayer phosphorene. Such reconstruction reduces 60% edge energy compared with the pristine one and occurs almost without an energy barrier, implying it should be the dominating edge in reality. The electronic...
Bornite (Cu5FeS4) is an Earth‐abundant, nontoxic thermoelectric material. Herein, twin engineering and Se alloying are combined in order to further improve its thermoelectric performance. Cu5FeS4−xSex (0 ≤x≤ 0.4) icosahedral nanoparticles, containing high‐density twin boundaries, have been synthesized by a colloidal method. Spark plasma sintering retains twin boundaries in the pellets sintered from...
The use of injectable biomaterials for cell delivery is a rapidly expanding field which may revolutionize the medical treatments by making them less invasive. However, creating desirable cell carriers poses significant challenges to the clinical implementation of cell‐based therapeutics. At the same time, no method has been developed to produce injectable microscaffolds (MSs) from electrospun materials...
Integration of solid‐state quantum emitters into nanophotonic circuits is a critical step towards fully on‐chip quantum photonic‐based technologies. Among potential materials platforms, quantum emitters in hexagonal boron nitride (hBN) have emerged as a viable candidate over the last years. While the fundamental physical properties have been intensively studied, only a few works have focused on the...
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