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Anode materials with high‐rate performances and good electrochemical stabilities are urgently required for the grid‐scale application of lithium‐ion batteries (LIBs). Theoretically, transition metal borides are desirable candidates because of their appropriate working potentials and good conductivities. However, the reported metal borides exhibit poor performances owing to their lack of favorable...
The transformation of the two‐electron oxygen reduction reaction (2e‐ORR) to produce hydrogen peroxide (H2O2) is a promising green synthesis approach that can replace the high‐energy consumption anthraquinone process. However, designing and fabricating low‐cost, non‐precious metal electrocatalysts for 2e‐ORR remains a challenge. In this study, a method of combining complexation precipitation and thermal...
Metal–support interaction (MSI) provides great possibilities to tune the activity, selectivity, and stability of heterogeneous catalysts. Herein, the Au/ZnO catalyst is prepared by commercial ZnO and chloroauric acid, and the structure evolution of the catalyst pretreated by H2 and O2 gas at varied temperature is investigated to provide mechanistic insights of MSI. It is found that the H2 treatment...
As a high energy density power system, lithium–carbon dioxide (Li–CO2) batteries play an important role in addressing the fossil fuel crisis issues and alleviating the greenhouse effect. However, the sluggish transformation kinetic of CO2 and the difficult decomposition of discharge products impede the achievement of large capacity, small overpotential, and long life span of the batteries, which require...
Covalent Organic Frameworks
In article number 2304989, Lei‐Lei Liu, Zhongyue Li, and co‐workers synthesize a calix[4]arene‐derived covalent organic framework (COF)‐C4A‐benzothiadiazole (BTD), which exhibits high crystallinity and features a non‐interpenetrating undulating 2D layered structure with AA‐stacking. COF‐C4A‐BTD has an appropriate electron donor‐acceptor and energy band structures which...
The calixarenes are ideal building blocks for constructing photocatalytic covalent organic frameworks (COFs), owing to their electron‐rich and bowl‐shaped π cavities that endow them with electron‐donating and adsorption properties. However, the synthesis and structural confirmation of COFs based on calixarenes are still challenging due to their structural flexibility and conformational diversity....
Silicon (Si) is considered the most promising anode material for the next generation of lithium‐ion batteries (LIBs) because of its high theoretical specific capacity and abundant reserves. However, the volume expansion of silicon in the cycling process causes the destruction of the electrode structure and irreversible capacity loss. As a result, the commercial application of silicon materials is...
Tunnel oxide passivating contact (TOPCon) solar cells (SCs) as one of the most competitive crystalline silicon (c‐Si) technologies for the TW‐scaled photovoltaic (PV) market require higher passivation performance to further improve their device efficiencies. Here, the successful construction of a double‐layered polycrystalline silicon (poly‐Si) TOPCon structure is reported using an in situ nitrogen...
The high conductivities and good mechanical properties of hydrogel electrolyte films are critical for energy storage devices with high flexibility, fast redox kinetics, and long life. Herein, a low water content (6.63 wt%) hydrogel film is prepared, and a favorable environment is created, with an electrochemical stability window of 2.26 V and a high ionic conductivity of 2.6 mS cm−1. The hydrogel...
Lithium‐rich manganese‐based layered oxides (LRM) have garnered considerable attention as cathode materials due to their superior performance. However, the inherent structural degradation and obstruction of ion transport during cycling lead to capacity and voltage decay, impeding their practical applications. Herein, an Sb‐doped LRM material with local spinel phase is reported, which has good compatibility...
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.
Developing carbon encapsulated magnetic composites with rational design of microstructure for achieving high‐performance electromagnetic wave (EMW) absorption in a facile, sustainable, and energy‐efficiency approach is highly demanded yet remains challenging. Here, a type of N‐doped carbon nanotube (CNT) encapsulated CoNi alloy nanocomposites with diverse heterostructures are synthesized via the facile,...
Superlattice Films
Work function difference induces spontaneous charge donation and band bending at the interfaces of superlattices, which causes optimization effects of modulation doping and energy filtering, leading to remarkably enhanced thermoelectric performances. This optimizing strategy is successfully elucidated in 1T′‐MoTe2/Bi2Te3 superlattice films. Meanwhile, the rational manipulation of...
Interfacial charge effects, such as band bending, modulation doping, and energy filtering, are critical for improving electronic transport properties of superlattice films. However, effectively manipulating interfacial band bending has proven challenging in previous studies. In this study, (1T′‐MoTe2)x(Bi2Te3)y superlattice films with symmetry‐mismatch were successfully fabricated via the molecular...
2D Dion–Jacobson (DJ) phase hybrid perovskites have shown great promise in the photoelectronic field owing to their outstanding optoelectronic performance and superior structural rigidity. However, DJ phase lead‐free double perovskites are still a virgin land with direct X‐ray detection. Herein, we have designed and synthesized a new DJ phase lead‐free layered double perovskite of (HIS)2AgSbBr8 (1...
It is facing a tremendous challenge to develop the desirable hybrids for photocatalytic H2 generation by integrating the advantages of a single semiconductor. Herein, an all‐sulfide ZnIn2S4/CdS/PdS heterojunction is constructed for the first time, where CdS and PdS nanoparticles anchor in the spaces of ZnIn2S4 micro‐flowers due to the confinement effects. The morphology engineering can guarantee rapid...
2D Fe‐chalcogenides have drawn significant attention due to their unique structural phases and distinct properties in exploring magnetism and superconductivity. However, it remains a significant challenge to synthesize 2D Fe‐chalcogenides with specific phases in a controllable manner since Fe‐chalcogenides have multiple phases. Herein, a molecular sieve‐assisted strategy is reported for synthesizing...
Hydrogen Evolution Reaction
In article number 2207146, Rui Gao, Chuan Shi, and co‐workers present Pt atoms to redisperse on α‐MoC1−x substrate from carbon nanotubes, which creates dual active interfaces of Pt species dispersed over carbon nanotubes and α‐MoC1−x. Benefiting from the strong electronic interaction between the Pt atom and α‐MoC1−x, the utilization efficiency of the Pt atom is evidently...
Platinum (Pt) drugs are widely used in clinic for cancer therapy, but their therapeutic outcomes are significantly compromised by severe side effects and acquired drug resistance. With the emerging immunotherapy and imaging‐guided cancer therapy, precise delivery and release of Pt drugs have drawn great attention these days. The targeting delivery of Pt drugs can greatly increase the accumulation...
Developing high‐performance electrocatalysts toward hydrogen evolution reaction (HER) is important for clean and sustainable hydrogen energy, yet still challenging. Herein, an α‐MoC1 ‐ x induced redispersing strategy to construct a superior HER electrocatalyst (Pt/CNTs‐N + α‐MoC1 ‐ x) by mechanical mixing of α‐MoC1 ‐ x with Pt/CNTs‐N followed by thermal reduction is reported. It is found that thermo‐activation...
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