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Copper‐based electrocatalysts effectively produce multicarbon (C2+) compounds during the electrochemical CO2 reduction (CO2RR). However, big challenges still remain because of the chemically unstable active sites. Here, cerium is used as a self‐sacrificing agent to stabilize the Cu+ of CuS, due to the facile Ce3+/Ce4+ redox. CeO2‐modified CuS nanoplates achieve high ethanol selectivity, with FE up...
Disordered crystallization and poor phase stability of mixed halide perovskite films are still the main factors that compromise the performance of inverted wide bandgap (WBG; 1.77 eV) perovskite solar cells (PSCs). Great difficulties are evidenced due to the very different crystallization rates between I‐ and Br‐based perovskite components through DMSO‐alone assisted anti‐solvent process. Here, a...
Supramolecular hydrogels involved macrocycles have been explored widely in recent years, but it remains challenging to develop hydrogel based on solitary macrocycle with super gelation capability. Here, the construction of lantern[33]arene‐based hydrogel with low critical gelation concentration (0.05 wt%), which can be used for efficient oil–water separation, is reported. The lantern[33]arenes self‐assemble...
A fundamental understanding of the hot‐carrier dynamics in halide perovskites is crucial for unlocking their prospects for next generation photovoltaics. Presently, a coherent picture of the hot carrier cooling process remains patchy due to temporally overlapping contributions from many‐body interactions, multi‐bands, band gap renormalization, Burstein–Moss shift etc. Pump‐push‐probe (PPP) spectroscopy...
In this work, a series of Mo‐containing polyoxometalates (POMs) modified separators to inhibit the growth of lithium dendrites, and thus improving the lifespan and safety of the cells is proposed. When the deposited lithium forms dendrites and touches the separator, the optimized Dawson‐type POM of (NH4)6[P2Mo18O62]·11H2O (P2Mo18) with the stronger oxidizability, acts like a “killer”, is more inclined...
Practical applications of lithium‐sulfur (Li‐S) batteries have been hindered by sluggish reaction kinetics and severe capacity decay during charge‐discharge cycling due to the notorious shuttle effect of polysulfide and the unfavored deposition and dissolution of Li2S. Herein, to address these issues, a double‐defect engineering strategy is developed for preparing Co‐doped FeP catalyst containing...
Sodium‐ion batteries (SIBs) are a possible candidate to create safe, sustainable, and cost‐effective batteries. Solid sodium‐ion conducting organically modified ionogel electrolytes are investigated. Silica‐based ionogels typically consist of an ionic liquid electrolyte (ILE) confined within a silica matrix and possess high thermal stability, good ionic conductivity, safety, and good electrochemical...
Fast‐neutrons play a critical role in a range of applications, including medical imaging, therapy, and nondestructive inspection. However, direct detecting fast‐neutrons by semiconductors has proven to be challenging due to their weak interaction with most matter and the requirement of high carrier mobility‐lifetime (µτ) product for efficient charge collection. Herein, a novel approach is presented...
A barcode magnetic nanowire typically comprises a multilayer magnetic structure in a single body with more than one segment type. Interestingly, due to selective functionalization and novel interactions between the layers, it has attracted significant attention, particularly in bioengineering. However, analyzing the magnetic properties at the individual nanowire level remains challenging. Herein,...
Garnet‐type Li7La3Zr2O12 (LLZ) materials are attracting attention as solid electrolytes (SEs) in oxide‐based all‐solid‐state batteries (ASSBs) owing to their high ionic conductivity. Although the electrochemical stability of LLZ against Li metal is demonstrated with possible high energy density, high‐temperature sintering above 1000 °C, which is required to achieve high Li‐ion conductivity, results...
Electrochemical synthesis of hydrogen peroxide (H2O2) through the selective oxygen reduction reaction (ORR) offers a promising alternative to the energy‐intensive anthraquinone method, while its success relies largely on the development of efficient electrocatalyst. Currently, carbon‐based materials (CMs) are the most widely studied electrocatalysts for electrosynthesis of H2O2 via ORR due to their...
Hybrid organic–inorganic perovskites (HOIPs) have shown great promise in a wide range of optoelectronic applications. However, this performance is inhibited by the sensitivity of HOIPs to various environmental factors, particularly high levels of relative humidity. This study uses X‐ray photoelectron spectroscopy (XPS) to determine that there is essentially no threshold to water adsorption on the...
Optical lenses require feature resolution and surface roughness that are beyond most (3D) printing methods. A new continuous projection‐based vat photopolymerization process is reported that can directly shape polymer materials into optical lenses with microscale dimensional accuracy (< 14.7 µm) and nanoscale surface roughness (< 20 nm) without post‐processing. The main idea is to utilize frustum...
2D carbon nanomaterials such as graphene, carbon nanosheets, and their derivatives, representing the emerging class of advanced multifunctional materials, have gained great research interest because of their extensive applications ranging from electrochemistry to catalysis. However, sustainable and scalable synthesis of 2D carbon nanosheets (CNs) with hierarchical architecture and irregular structure...
Platinum‐rare earth metal (Pt‐RE) nanoalloys are regarded as a potential high performance oxygen reduction reaction (ORR) catalyst. However, wet chemical synthesis of the nanoalloys is a crucial challenge because of the extremely high oxygen affinity of RE elements and the significantly different standard reduction potentials between Pt and RE. Here, this paper presents a molten‐salt electrochemical...
Since the intercalation of anions into layered hydroxides (LHs) has a great impact not only on their nucleation and growth but also on their structure, composition, and size, the intercalation chemistry of LHs has aroused the strong interest of researchers. However, the progress in the fundamental understanding of LHs intercalated with guest anions have not been paralleled by a concomitant development...
Magnetic Nanoparticles
In article number 2302686, Jiurong Liu, Zhihui Zeng, and co‐workers report a type of N‐doped carbon nanotube encapsulated CoNi alloy nanocomposites with diverse heterostructures, which deliver excellent electromagnetic wave absorption performance involving a minimum reflection loss of −84.0 dB at the thickness of 3.2 mm and a maximum effective bandwidth of 4.3 GHz.
Understanding the solid electrolyte interphase (SEI) formation and (de)lithiation phenomena at silicon (Si) electrodes is key to improving the performance and lifetime of Si‐based lithium‐ion batteries. However, these processes remain somewhat elusive, and, in particular, the role of Si surface termination merits further consideration. Here, scanning electrochemical cell microscopy (SECCM) is used...
Orthorhombic MoO3 (α‐MoO3) with multivalent redox couple of Mo6+/Mo4+ and layered structure is a promising cathode for rechargeable aqueous Zn‐ion batteries (AZIBs). However, pure α‐MoO3 suffers rapid capacity decay due to the serious dissolution and structural collapse. Meanwhile, the growth of byproduct and dendrite on the anode also lead to the deterioration of cyclic stability. This article establishes...
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