The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Carrier‐selective passivating contacts using transition metal oxides (TMOs) have attracted great attention for crystalline silicon (c‐Si) heterojunction solar cells recently. Among them, tantalum oxide (Ta2O5) exhibits outstanding advantages, such as a wide bandgap, good surface passivation, and a small conduction band offset with c‐Si, which is typically used as an electron‐selective contact layer...
Multifunctional electrocatalysts are crucial to cost‐effective electrochemical energy conversion and storage systems requiring mutual enhancement of disparate reactions. Embedding noble metal nanoparticles in 2D metal–organic frameworks (MOFs) are proposed as an effective strategy, however, the hybrids usually suffer from poor electrochemical performance and electrical conductivity in operating conditions...
Sodium superionic conductor (NASICON)‐type Na3V2(PO4)3 has attracted considerable interest owing to its stable three‐dimensional framework and high operating voltage; however, it suffers from a low‐energy density due to the poor intrinsic electronic conductivity and limited redox couples. Herein, the partial substitution of Mn3+ for V3+ in Na3V2(PO4)3 is proposed to activate V4+/V5+ redox couple for...
Nickel sulfides with high theoretical capacity are considered as promising anode materials for sodium‐ion batteries (SIBs); however, their intrinsic poor electric conductivity, large volume change during charging/discharging, and easy sulfur dissolution result in inferior electrochemical performance for sodium storage. Herein, a hierarchical hollow microsphere is assembled from heterostructured NiS/NiS...
The “shuttle effect” and slow conversion kinetics of lithium polysulfides (LiPSs) are stumbling block for high‐energy‐density lithium–sulfur batteries (LSBs), which can be effectively evaded by advanced catalytic materials. Transition metal borides possess binary LiPSs interactions sites, aggrandizing the density of chemical anchoring sites. Herein, a novel core–shelled heterostructure consisting...
The electrocatalytic CO2 reduction reaction (CO2RR) is an attractive technology for CO2 valorization and high‐density electrical energy storage. Achieving a high selectivity to C2+ products, especially ethylene, during CO2RR at high current densities (>500 mA cm−2) is a prized goal of current research, though remains technically very challenging. Herein, it is demonstrated that the surface and...
This work reports a new form of tubular g‐C3N4 that is featured with a hierarchical core–shell structure introduced with phosphorous elements and nitrogen vacancies. The core is self‐arranged with randomly stacked g‐C3N4 ultra‐thin nanosheets along the axial direction. This unique structure significantly benefits electron/hole separation and visible‐light harvesting. A superior performance for the...
Electronic textiles (e‐textiles) hold great promise for serving as next‐generation wearable electronics owing to their inherent flexible, air‐permeable, and lightweight characteristics. However, these e‐textiles are of limited performance mainly because of lacking powerful materials combination. Herein, a versatile e‐textile through a simple, high‐efficiency mixed‐dimensional assembly of 2D MXene...
Hydrogen, a clean and flexible energy carrier, can be efficiently produced by electrocatalytic water splitting. To accelerate the sluggish hydrogen evolution reaction and oxygen evolution reaction kinetics in the splitting process, highly active electrocatalysts are essential for lowering the energy barriers, thereby improving the efficiency of overall water splitting. Combining the distinctive advantages...
Tandem catalysis is a promising way to break the limitation of linear scaling relationship for enhancing efficiency, and the desired tandem catalysts for electrochemical CO2 reduction reaction (CO2RR) are urgent to be developed. Here, a tandem electrocatalyst created by combining Cu foil (CF) with a single‐site Cu(II) metal–organic framework (MOF), named as Cu–MOF–CF, to realize improved electrochemical...
Here, a new route is proposed for the minimization of lattice thermal conductivity in MnTe through considerable increasing phonon scattering by introducing dense lattice distortions. Dense lattice distortions can be induced by Cu and Ag dopants possessing large differences in atom radius with host elements, which causes strong phonon scattering and results in extremely low lattice thermal conductivity...
The improvement of lithium–sulfur batteries is still impeded by notorious shuttling effect and sluggish kinetics on the S cathode, and rampant Li dendrite formation on the Li anode makes it worse. Herein, a type of single‐atom dispersed Mo on nitrogen‐doped graphene (Mo/NG) with a distinctive Mo‐N2O2‐C coordination structure first serving as a multifunctional material is designed by a structure‐oriented...
Stable lithiophilic sites in 3D current collectors are the key to guiding the uniform Li deposition and thus suppressing the Li dendrite growth, but such sites created by the conventional surface decoration method are easy to be consumed along with cycling. In this work, carbon fiber (CF)‐based 3D porous networks with built‐in lithiophilic sites that are stable upon cycling are demonstrated. Such...
Direct ammonia (NH3) synthesis from water and atmospheric nitrogen using sunlight provides an energy‐sustainable and carbon‐neutral alternative to the Haber–Bosch process. However, the development of such a route with high performance is impeded by the lack of effective charge transfer and abundant active sites to initiate the nitrogen reduction reaction (NRR). Here, the authors report efficient plasmon‐induced...
2D materials with intriguing properties have been widely used in optoelectronics. However, electronic devices suffered from structural damage due to the ultrathin materials and uncontrolled defects at interfaces upon metallization, which hindered the development of reliable devices. Here, a damage‐free Au/h‐BN/Au memristor is reported using a clean, water‐assisted metal transfer approach by physically...
The electrochemical CO2 reduction reaction (CO2RR) has great potential in realizing carbon recycling while storing sustainable electricity as hydrocarbon fuels. However, it is still a challenge to enhance the selectivity of the CO2RR to single multi‐carbon (C2+) product, such as C2H4. Here, an effective method is proposed to improve C2H4 selectivity by inhibiting the production of the other competitive...
2D ferroelectrics with robust polar order in the atomic‐scale thickness at room temperature are needed to miniaturize ferroelectric devices and tackle challenges imposed by traditional ferroelectrics. These materials usually have polar point group structure regarding as a prerequisite of ferroelectricity. Yet, to introduce polar structure into otherwise nonpolar 2D materials for producing ferroelectricity...
The commercialization of MXenes as anodes for lithium‐ion batteries is largely impeded by low initial coulombic efficiency (ICE) and unfavorable cycling stability, which are closely associated with defects such as Ti vacancies (VTi) in Ti3C2 MXenes. Herein, an effective strategy is developed to deactivate VTi defects by in situ growing Al2O3 nanoclusters on MXenes to alleviate the irreversible electrolyte...
Single‐photon detectors (SPDs) that can sense individual photons are the most sensitive instruments for photodetection. Established SPDs such as conventional silicon or III–V compound semiconductor avalanche diodes and photomultiplier tubes have been used in a wide range of time‐correlated photon‐counting applications, including quantum information technologies, in vivo biomedical imaging, time‐of‐flight...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.