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Integrating a graphene transparent electrode (TE) matrix with driving circuits is essential for the practical use of graphene in optoelectronics such as active‐matrix organic light‐emitting diode (OLED) display, however it is disabled by the transport of carriers between graphene pixels after deposition of a semiconductor functional layer caused by the atomic thickness of graphene. Here, the carrier...
It is crucial to control the ion transport in membranes for various technological applications such as energy storage and conversion. The emerging functional two‐dimensional (2D) nanosheets such as graphene oxide and MXenes show great potential for constructing ordered nanochannels, but the assembled membranes suffer from low ion selectivity and stability. Here a class of robust charge‐selective membranes...
Unlike single‐step reactions, multi‐step reactions can be greatly facilitated only if all the intermediate reactions can be catalyzed simultaneously and progressively. Herein, the theoretical analysis and experiments to illustrate the superiority of the cascade oxygen evolution reaction (OER) are conducted. As different OER intermediate reactions demand FexNi1‐xOOH with altered Fe/Ni ratios, gradient...
Overall photocatalytic conversion of CO2 and pure H2O driven by solar irradiation into methanol provides a sustainable approach for extraterrestrial synthesis. However, few photocatalysts exhibit efficient production of CH3OH. Here, BiOBr nanosheets supporting atomic Cu catalysts for CO2 reduction are reported. The investigation of charge dynamics demonstrates a strong built‐in electric field established...
The use and storage of renewable and clean energy has become an important trend due to resource depletion, environmental pollution, and the rising price of refined fossil fuels. Confined by the limited resource and uneven distribution of lithium, non‐lithium‐ion batteries have become a new focus for energy storage. The six‐membered‐ring (SMR) is a common structural unit for numerous material systems...
Non‐Lithium‐Ion Batteries
Two‐dimensional six‐membered‐ring inorganic materials are ideal candidates for non‐lithium‐ion battery anodes due to their excellent properties. In article number 2107868, Feng Li and co‐workers summarize the theoretical research of this field in recent years. A series of anodes with high capacity and low ion diffusion barrier are also screened, and the challenges and potential...
Lithium metal is an ideal electrode material for future rechargeable batteries. However, dendrite formation and unstable solid electrolyte interphase film lead to safety concerns and poor Coulombic efficiency (CE). LiNO3 significantly improves the performance of the lithium metal anode in ester electrolytes but its use is restricted by low solubility. To increase the content of LiNO3 in the cell,...
Fast‐charging batteries have attracted great attention, and are anticipated to charge electrical vehicles and consumer electronics to full‐capacity in several minutes. However, commercial electrode materials in batteries generally have a limited rate performance and are difficult to be used in fast‐charging batteries. Designing electrodes with an aligned structure is an effective way to shorten the...
Monolayer transition metal dichalcogenides are 2D materials with many potential applications. Chemical vapor deposition (CVD) is a promising method to synthesize these materials. However, CVD‐grown materials generally have poorer quality than mechanically exfoliated ones and contain more defects due to the difficulties in controlling precursors' distribution and concentration during growth where solid...
Doping of bulk silicon and III–V materials has paved the foundation of the current semiconductor industry. Controlled doping of 2D semiconductors, which can also be used to tune their bandgap and type of carrier thus changing their electronic, optical, and catalytic properties, remains challenging. Here the substitutional doping of nonlike element dopant (Mn) at the Mo sites of 2D MoS2 is reported...
Rechargeable batteries are considered promising replacements for environmentally hazardous fossil fuel‐based energy technologies. High‐energy lithium‐metal batteries have received tremendous attention for use in portable electronic devices and electric vehicles. However, the low Coulombic efficiency, short life cycle, huge volume expansion, uncontrolled dendrite growth, and endless interfacial reactions...
In article number 1805064, Feng Hou, Ji Liang, and co‐workers fabricate flexible, free‐standing, and continuous nickel sulfide nanosheet/carbon nanotube (NS/CNT) films through a silicamediated conversion process. The nickel sulfide nanosheets with controllable phases and compositions are homogeneously and intimately attached on highly graphitized and fewwalled CNTs. The NS/CNT can be directly used...
An effective, nondestructive, and universal strategy to homogeneously modify freestanding carbon nanotube (CNT) films with various active species is essential to achieve functional electrodes for flexible electrochemical energy storage, which is challenging and has attracted considerable research interest. In this work, a generalizable concept, to utilize silicon oxide as the intermediate to uniformly...
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