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Hydrogen (H2) has emerged as a highly promising energy carrier owing to its remarkable energy density and carbon emission‐free properties. However, the widespread application of H2 fuel has been limited by the difficulty of storage. In this work, spontaneous electrochemical hydrogen production is demonstrated using hydrazine (N2H4) as a liquid hydrogen storage medium and enabled by a highly active...
Dental adhesives are widely used in daily practice for minimally invasive restorative dentistry but suffer from bond degradation and biofilm attack. Bio‐inspired by marine mussels having excellent surface‐adhesion capability and high chemical affinity of polydopamine (PDA) to metal ions, herein, experimental zinc (Zn)‐containing polydopamine‐based adhesive formulation, further being referred to as...
The zinc dendrite growth generally relies upon a “positive‐feedback” mode, where the fast‐grown tips receive higher current densities and ion fluxes. In this study, a self‐limiting polyacrylamide (PAM) hydrogel that presents negative feedback to dendrite growth is developed. The monomers are purposefully polymerized at the dendrite tips, then the hydrogel reduces the local current density and ion...
The use of 2D materials to produce hydrogen (H2) fuel via photocatalytic water splitting has been intensively studied. However, the simultaneous fulfillment of the three essential requirements—high photon utilization, rapid carrier transfer, and low‐barrier redox reactions—for wide‐pH‐range production of H2 still poses a significant challenge with no additional modulation. By employing the first‐principles...
Metal nanoclusters with precisely modulated structures at the nanoscale give us the opportunity to synthesize and investigate 1D nanomaterials at the atomic level. Herein, it realizes selective 1D growth of building block nanocluster “Au13Cd2” into three structurally different nanoclusters: “hand‐in‐hand” (Au13Cd2)2O, “head‐to‐head” Au25, and “shoulder‐to‐shoulder” Au33. Detailed studies further reveals...
To make sodium‐ion batteries a realistic option for everyday energy storage, a practicable method is to enhance the kinetics of Na+ reactions through the development of structurally stable electrode materials. This study utilizes ternary Sn‐based dichalcogenide (SnS1.5Se0.5) in the design of electrode material to tackle several issues that adversely hinder the performance and longevity of sodium‐ion...
Stabilization of the Pt in N‐doped carbon materials is an effective method to improve the performance of electrocatalytic methanol oxidation reaction (MOR). Nevertheless, the roles of different N configurations (pyridinic N, pyrrolic N, and graphitic N) toward the electrochemical performance of Pt‐based catalysts remain unclear. Herein, Density Functional Theory calculations are adopted to elucidate...
The synthesis of large‐scale 2D conductive metal‐organic framework films with tunable thickness is highly desirable but challenging. In this study, an Interface Confinement Self‐Assembly Pulling (ICSP) method for in situ synthesis of 4‐in. Ni‐BHT film on the substrate surface is developed. By modulating the thickness of the confined space, the thickness of Ni‐BHT films could be easily varied from...
Nanoclusterzymes
In article numbered 2207936, Man‐Bo Li, Yan Zhao, Zhikun Wu, and co‐workers synthesize a novel atomically precise Au14 nanoclusterzyme, which can activate O2 to O2•− under visible light and leads to the blue color of 3,3′,5,5′‐tetramethylbenzidine (TMB). With the addition of acetylcholinesterase (AChE), the blue color of (Au14 + TMB) solution disappears, but the further addition of...
The enzymatic activity of atomically precise metal nanoclusters has recently been recognized; however, the number of nanoclusterzymes is very small. Besides, the applications of nanoclusterzyme wait to be explored. Herein, a novel nanoclusterzyme is synthesized and its structure is majorly resolved by single‐crystal X‐ray diffraction and mass spectrometry, which reveal that the nanocluster consists...
Wearable electronics are attracting increasing interest due to the emerging Internet of Things (IoT). Compared to their inorganic counterparts, stretchable organic semiconductors (SOSs) are promising candidates for wearable electronics due to their excellent properties, including light weight, stretchability, dissolubility, compatibility with flexible substrates, easy tuning of electrical properties,...
Membrane technology has shown a viable potential in conversion of liquid‐waste or high‐salt streams to fresh waters and resources. However, the non‐adjustability pore size of traditional membranes limits the application of ion capture due to their low selectivity for target ions. Recently, covalent organic frameworks (COFs) have become a promising candidate for construction of advanced ion separation...
Hybrid Strains
The defect‐rich crystalline/amorphous Pd nanosheet aerogel with hybrid microstrain and lattice strain is synthesized by combining laser irradiation in liquid and phosphorus doping methods. The measured mass activity, specific activity and C1‐path selectivity of the Pd nanosheet aerogel are 4.48, 3.06 and 5.06 times higher than those of commercial Pd/C, respectively. More details can...
Strain engineering of electrocatalysts provides an effective strategy to improve the intrinsic catalytic activity. Here, the defect‐rich crystalline/amorphous Pd nanosheet aerogel with hybrid microstrain and lattice strain is synthesized by combining laser irradiation and phosphorus doping methods. The surface strain exhibited by the microstrain and lattice strain shifts the d‐band center of the electrocatalyst,...
With a high energy density, lithium–sulfur batteries (LSB) are regarded as one of the promising next‐generation energy storage systems. However, many challenges hinder the practical applications of LSB, such as the dendrite formations/parasitic reactions on the Li metal anode and the “shuttle effect” of lithium polysulfides of the LSB cathode. Herein, a novel diluted medium‐concentrated electrolyte...
Adjusting the local coordination environment of single‐atom electrocatalysts is a viable way to improve catalytic performance. The diversity of coordination geometric structures is limited to the traditional in‐plane configuration, with only a little consideration paid to out‐of‐plane configurations due to the lack of suitable carriers and fabrication methods. This study reports out‐of‐plane coordination...
Vacancy engineering can modulate the electronic structure of the material and thus contribute to the formation of coordination unsaturated sites, which makes it easier to act on the substrate. Herein, Ag2S and Ag2S‐100, which mainly have vacancy associates VAgS and VAgSAg, respectively, are prepared and characterized by positron annihilation spectroscopy. Both experimental and theoretical calculation...
Transition metal‐based nitrogen‐doped carbon (M‐Nx‐C) is considered as a promising catalyst for the oxygen reduction reaction (ORR) in clean energy storage and conversion devices. Herein, ZnCo dual‐atomic sites are incorporated in hierarchical N‐doped carbon (HNC), with 1D nanotubes wrapped in 2D nanosheets structure (termed as 1D@2D ZnCo‐HNC), via a one‐step bio‐inspired pyrolysis. The feeding ratio...
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...
Despite exhibiting high specific capacities, Si‐based anode materials suffer from poor cycle life as their volume change leads to the collapse of conductive network within the electrode. For this reason, the challenge lies in retaining the conductive network during electrochemical processes. Herein, to address this prominent issue, a cross‐linked conductive binder (CCB) is designed for commercially...
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