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Defect engineering is promising to tailor the physical properties of 2D semiconductors for function‐oriented electronics and optoelectronics. Compared with the extensively studied 2D binary materials, the origin of defects and their influence on physical properties of 2D ternary semiconductors are not clarified. Here, the effect of defects on the electronic structure and optical properties of few‐layer...
Direct air capture (DAC) of CO2 has emerged as the most promising “negative carbon emission” technologies. Despite being state‐of‐the‐art, sorbents deploying alkali hydroxides/amine solutions or amine‐modified materials still suffer from unsolved high energy consumption and stability issues. In this work, composite sorbents are crafted by hybridizing a robust metal‐organic framework (Ni‐MOF) with...
Direct Air Capture
In article number 2302708, Zhenzhen Yang, Sheng Dai, and co‐workers achieve high‐performance direct air capture (DAC) of CO2 by harnessing composite sorbents being crafted by hybridizing a robust metal‐organic framework (Ni‐MOF) with superbase‐derived ionic liquid (SIL), possessing rapid carbon capture kinetics, facile CO2 releasing, and good cycling stability.
Electrochemical CO2‐to‐CO conversion offers an attractive and efficient route to recycle CO2 greenhouse gas. Molecular catalysts, like CoPc, are proved to be possible replacement for precious metal‐based catalysts. These molecules, a combination of metal center and organic ligand molecule, may evolve into single atom structure for enhanced performance; besides, the manipulation of molecules’ behavior...
The 2D graphyne‐related scaffolds linked by carbon–carbon triple bonds have demonstrated promising applications in the field of catalysis and energy storage due to their unique features including high conductivity, permanent porosity, and electron‐rich properties. However, the construction of related scaffolds is still mainly limited to the cross‐linking of CaC2 with multiple substituted aromatic...
Polymer‐based solid electrolytes (PSEs) offer great promise in developing lithium metal batteries due to their attractive features such as safety, light weight, low cost, and high processability. However, a PSE‐based lithium battery usually requires a relatively high temperature (60 °C or above) to complete charge and discharge due to the poor ionic conductivity of PSEs. Herein, a gel polymer electrolytes...
Lithium Metal Batteries
In article number 2106352, Fei Chen, Ben Bin Xu, and co‐workers develop a gel polymer electrolyte (GPE) with a supramolecular crosslinked structure and quadruple hydrogen bonding to fulfill a GPE with high thermal stability, good mechanical property and a high ionic conductivity of 3.8 × 10−3 S cm−1 at 25 °C. This work encompasses a route to develop high performance electrolyte...
Two‐dimentional semiconductors have shown potential applications in multi‐bridge channel field‐effect transistors (MBC‐FETs) and complementary field‐effect transistors (C‐FETs) due to their atomic thickness, stackability, and excellent electrical properties. However, the exploration of MBC‐FET and C‐FET based on large‐scale 2D semiconductors is still lacking. Here, based on a reliable vertical stacking...
High‐valence metal‐doped multimetal (oxy)hydroxides outperform noble metal electrocatalysts for the oxygen evolution reaction (OER) owing to the modified energetics between 3d metals and high‐valence dopants. However, the rational design of sufficient and subtle modulators is still challenging. With a multimetal layered double hydroxide (LDH) as the OER catalyst, this study introduces a series of...
Lead halide perovskite nanocrystals (NCs) exhibit excellent optoelectronic performance, however, the broad application is limited by their poor stability. Herein, a strategy for stable core‐shell structured bismuth‐doped lead halide perovskite NCs is reported. The stable core‐shell perovskite NCs are prepared based on heterovalent substitutions and surface segregation effect. Core‐shell features are...
Nanoporous TiNb2O7 (NPTNO) material is synthesized by a sol–gel method with an ionic liquid (IL) as the nanoporous structure directing template. NPTNO exhibits a high reversible capacity of 210 mAh g–1 even at the charging rate of 50 C and an excellent cyclability of half‐cell capacity retention of 74% for 1000 cycles at 5 C and LiNi0.5Mn1.5O4‐coupled full‐cell capacity retentions of 81% and 87% for...
Tailoring terminated edge of hexagonal boron nitride (h‐BN) for enhancing catalysis has turned to be an imperative for the rational design of a highly active aerobic catalyst. Herein, a tailoring N‐terminated porous BN (P‐BN) strategy is reported with a zinc (Zn) salt as a dual‐functional template. The Zn salt acts as both an in situ template and an N‐terminated defective edges directing agent. The...
A robust solution phase ligand exchange system for lead sulfide (PbS) quantum dots (QDs) in the presence of Pb‐thiolate ligands is presented that can better preserve the excitonic absorption and emission features as compared to the conventional ligands. The photoluminescence after ligand exchange of PbS QDs with Pb‐thiolate ligand is preserved up to 78% of the original oleate capped PbS QDs.
Solid electrolytes are one of the most promising electrolyte systems for safe lithium batteries, but the low ionic conductivity of these electrolytes seriously hinders the development of efficient lithium batteries. Here, a novel class of graphene‐analogues boron nitride (g‐BN) nanosheets confining an ultrahigh concentration of ionic liquids (ILs) in an interlayer and out‐of‐layer chamber to give...
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