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Potassium ion hybrid capacitors (PIHCs) are of particular interest benefiting from high energy/power densities. However, challenges lie in the kinetic mismatch between battery‐type anode and capacitive‐type cathode, as well as the difficulty in achieving optimized charge/mass balance. These significantly sacrifice the electrochemical performance of PIHCs. Here, strategies including charge/mass balance...
In article number 2004276, Rong Yang, Guangyu Zhang, and co‐workers develop an in situ oxygen substitutional doping in MoS2 monolayers by one step chemical vapor deposition process and lateral heterostructures with controlled doping concentrations are reliably fabricated. The bandgap tunability (from 2.25 to 1.75 eV) and n‐doping electronic properties are realized. This nondestructive oxygen doping...
In article number 2004129, Dongfang Zhou, Youhui Lin, and co‐workers firstly demonstrate that N‐rich carbonized silk fibroin material can serve as efficient peroxidase and oxidase mimics. Silk fibroin itself is inert, while its enzyme‐like activities are triggered by high‐temperature carbonization. By combination of its excellent photothermal conversion efficiency, the silk‐derived artificial enzyme...
In article number 2004677, Han Zhang, Yang Tan, Feng Chen, and co‐workers demonstrate that the antibacterial ability against drug‐resistant bacteria can be endowed to transition metal dichalcogenides (XS2, X = Mo/W) quantum dots by sulfur vacancies, and their application in bacterial keratitis. The sulfur vacancies generated by the ion irradiation result in the one‐way electron transport from the...
Here, an artificial spin ice lattice is introduced that exhibits unique Ising and non‐Ising behavior under specific field switching protocols because of the inclusion of coupled nanomagnets into the unit cell. In the Ising regime, a magnetic switching mechanism that generates a uni‐ or bimodal distribution of states dependent on the alignment of the field is demonstrated with respect to the lattice...
2D Dion–Jacobson (DJ) perovskites have recently drawn much attention owing to their superior charge transport and high environmental stability. Unfortunately, their intrinsic optoelectronic properties are largely unexplored due to the lack of high‐quality single crystals available for accurate measurements. Herein, a reactive, low‐temperature‐gradient crystallization process to grow high‐quality 2D...
Antimonene quantum dots (AMQDs) are attracting considerable attention due to their fascinating physicochemical properties. However, research on their semiconductor characteristics, especially the photoluminescence performance, is still in a preliminary stage and the experimental verification is scarcely reported, significantly restricting their further applications. Herein, the photoluminescence property...
The relatively high recombination rate of charges remains the most critical limiting factor for solar‐driven water splitting for hydrogen generation. Herein, a tandem 0D/2D/2D NbS2 quantum dot/Nb2O5 nanosheet/g‐C3N4 flake (NSNOCN) system is designed. Owing to the unique spatial‐arrangement and elaborate morphology of 0D NbS2, 2D Nb2O5, and 2D g‐C3N4 in the newly designed NSNOCN, plenty of spatial...
Quantum anomalous Hall effect, with a trademark of dissipationless chiral edge states for electronics/spintronics transport applications, can be realized in materials with large spin–orbit coupling and strong intrinsic magnetization. After Haldane's seminal proposal, several models have been presented to control/enhance the spin–orbit coupling and intrinsic magnetic exchange interaction. After brief...
As a crucial instinct for the survival of organisms, adaptive smart deformation has been well shown via profusely astounding examples within biological morphogenesis in nature, which inspired the construction of biomimetic shape‐morphing materials with controlled actuating behaviors. Herein, the construction of nature‐inspired bilayer hydrogel film actuators, composed of a polyacrylamide hydrogel...
The ability of floating ferns Salvinia to keep a permanent layer of air under water is of great interest, e.g., for drag‐reducing ship coatings. The air‐retaining hairs are superhydrophobic, but have hydrophilic tips at their ends, pinning the air–water interface. Here, experimental and theoretical approaches are used to examine the contribution of this pinning effect for air‐layer stability under...
The boosting demand for high‐capacity energy storage systems requires innovative battery technologies with low‐cost and sustainability. The advancement of potassium–sulfur (K–S) batteries have been triggered recently due to abundant resource and cost effectiveness. However, the functional performance of K–S batteries is fundamentally restricted by the vague understanding of K–S electrochemistry and...
The crystalline orientation and phase distribution are two important parameters for high‐performance 2D perovskite solar cells. Therefore, it is essential to understand how the structure of spacer ligands influences the orientation and phase distribution of resulting 2D perovskite films. In this work, a new member of Dion–Jacobson (DJ) phase 2D perovskites based on trans‐1,4‐cyclohexanediamine (CHDA)...
Complex systems involving networks have attracted strong multidisciplinary attention since they are predicted to sustain fascinating phase transitions in the proximity of the percolation threshold. Developing stable and compact archetypes that allow one to experimentally study physical properties around the percolation threshold remains a major challenge. In nanoscale systems, this achievement is...
Biologically plausible computing systems require fine‐grain tuning of analog synaptic characteristics. In this study, lithium‐doped silicate resistive random access memory with a titanium nitride (TiN) electrode mimicking biological synapses is demonstrated. Biological plausibility of this RRAM device is thought to occur due to the low ionization energy of lithium ions, which enables controllable...
The general synergistic effect of TiO2‐based heterostructures has been discovered to improve the sodium storage of anodes, involving conversion, alloying, and insertion mechanism materials. Herein, metal sulfides (MS2, M = Sn2+, Co2+, Mo2+), metallic Sb and Sn, as well as, carbon nanotubes (CNTs) are chosen as the model examples from the three kinds. The electrochemical testing demonstrates a better...
High‐quality crystalline micro‐ and nanostructures based on inorganic semiconductors including zinc oxide (ZnO) have attracted considerable interest in electronic and optoelectronic applications due to their outstanding properties. ZnO micro‐ and nanocrystals can be fabricated by the moderate and high throughput hydrothermal synthesis. Yet it is restricted by patterning large‐area ZnO crystals with...
Chemical transformation in cellular environment is critical for regulating biological processes and metabolic pathways. Harnessing biocatalytic cascades to produce chemicals of interest has become a research focus to benefit industrial and pharmaceutic areas. Nanoreactors, which can act as artificial cell‐like devices to organize cascade reactions, have been recently proposed for potential therapeutic...
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