Surface charge state plays an important role in tuning the catalytic performance of nanocrystals various reactions. Herein, we report a synthetic approach to unique Pt-Pd-graphene stack structures with controllable Pt shell thickness. These hybrid allow us correlate thickness hydrogen-evolution reaction (HER). The HER activity increases decrease thickness, which is well explained by surface polarization mechanism as suggested first-principles simulations. In this system, difference work...

Abstract Carbon materials have attracted significant attention as anode for sodium ion batteries (SIBs). Developing a carbon with long‐term cycling stability under ultrahigh rate is essential practical application of SIBs in energy storage systems. Herein, sulfur and nitrogen codoped mesoporous hollow spheres are developed, exhibiting high performance 144 mA h g −1 at 20 A , excellent durability current density. Interestingly, during 7000 cycles density the capacity electrode gradually...

Abstract Efficient removal of particulate matter (PM) is the major goal for various air cleaning technologies due to its huge impact on human health. Here, a washable high‐efficiency triboelectric filter (TAF) that can be used multiple times presented. The TAF consists five layers polytetrafluoroethylene (PTFE) and nylon fabrics. Compared with traditional electrostatic precipitator, which requires high‐voltage power supply, charged by simply rubbing PTFE fabrics against each other....

Converting CO2 into chemical fuels with a photocatalyst and sunlight is an appealing approach to address climate deterioration energy crisis. Metal complexes are superb candidates for reduction due their tunable catalytic sites high activity. The coupling of metal organic photosensitizers regarded as common strategy establishing photocatalytic systems visible-light-driven reduction. While most the generally contain precious metals available through onerous synthetic routes, large-scale...

Abstract Making use of water wave energy at large is one the most attractive, low‐carbon, and renewable ways to generate electric power. The emergence triboelectric nanogenerator (TENG) provides a new approach for effectively harvesting such low‐frequency, irregular, “random” energy. In this work, TENG array consisting spherical units based on spring‐assisted multilayered structure devised scavenge introduction spring enhances output performance by transforming low‐frequency motions into...

Abstract As an emerging technology for harvesting mechanical energy, low surface charge density greatly hinders the practical applications of triboelectric nanogenerators (TENGs). Here, a high-performance TENG based on shuttling is demonstrated. Unlike conventional TENGs with static charges fully constrained dielectric surface, device works corralled in conduction domains. Driven by interaction two quasi-symmetrical domains, mirror carriers can be achieved to double output. Based mechanism,...

The application of lithium–sulfur (Li–S) batteries is severely hampered by the shuttle effect and sluggish redox kinetics. Herein, amorphous cobalt phosphide grown on a reduced graphene oxide-multiwalled carbon nanotube (rGO-CNT-CoP(A)) designed as sulfur host to conquer above bottlenecks. differences between (CoP) crystalline CoP surface adsorption well conversion lithium polysulfides (LiPSs) are investigated systematical experiments density-functional theory (DFT) calculations....

Abstract Triboelectric nanogenerator (TENG) is an emerging approach for harvesting energy from the living environment. But its performance limited by maximum density of surface charges created contact electrification. Here, rationally designing a synchronous rotation structure, charge pumping strategy realized first time in rotary sliding TENGs, which demonstrated to enhance factor 9, setting up record TENGs. The average power boosted more than 15 times compared with normal achieving...

Abstract Lithium–sulfur batteries have aroused great interest in the context of rechargeable batteries, while shuttle effect and sluggish conversion kinetics severely handicap their development. Defect engineering, which can adjust electronic structures electrocatalyst, thus affect surface adsorption catalytic process, has been recognized as a good strategy to solve above problems. However, research on phosphorus vacancies rarely reported, how battery performance remains unclear. Herein, CoP...

Defective materials have been demonstrated to possess adsorptive and catalytic properties in lithium-sulfur (Li-S) batteries, which can effectively solve the problems of lithium polysulfides (LiPSs) shuttle sluggish conversion kinetics during charging discharging Li-S batteries. However, there is still a lack research on quantitative relationship between defect concentration adsorptive-catalytic performance electrode. In this work, perovskites Sr0.9 Ti1-x Mnx O3-δ (STMnx ) (x = 0.1-0.3) with...

Urea oxidation reaction (UOR), with a low thermodynamic potential, offers great promise for replacing anodic oxygen evolution of electrolysis systems such as water splitting, carbon dioxide reduction, etc., thus reducing the overall energy consumption. To promote sluggish kinetics UOR, highly efficient electrocatalysts are required, and Ni-based materials have been widely investigated. However, most these reported catalysts suffer from large overpotentials, they generally undergo...

Constructing a built-in electric field at the interface of semiconductors has been demonstrated to provide driving force for spatial charge separation in photocatalysis.

The widespread heterojunction or p–n junction strategies fabricated between different semiconductors are generally used to promote the spatial charge separation in photocatalysis and solar cells, which originated from principle that composites possess totally crystalline energy structures. A vagarious supreme challenge remained as whether a could be formed identical with same phases. Herein, taking model semiconductor TiO2 prototype proof-of-concept, homophase was phases of large small...

Abstract Photocatalytic reduction of CO 2 into value‐added chemical fuels is an appealing approach to address energy crisis and global warming. CsPbBr 3 quantum dots (QDs) are good candidates for because their excellent photoelectric properties, including high molar extinction coefficient, low exciton binding energy, defect tolerance. However, the pristine QDs generally have photocatalytic performance mainly due dominant charge recombination lack efficient catalytic sites...

Developing an economical, durable, and efficient electrode that performs well at high current densities is capable of satisfying large-scale electrochemical hydrogen production highly demanded. A self-supported electrocatalytic "Pt-like" WC porous with open finger-like holes produced through industrial processes, a tightly bonded nitrogen-doped WC/W (WC-N/W) heterostructure formed in situ on the grains. The obtained WC-N/W manifests excellent durability stability under multi-step density...

Abstract Metastable structures are promising candidates for efficient catalysis owing to abundant active electronic states, strong coupling with reactants, and energetic preference. Exerting the value of metastable while evading difficulty in direct synthesis remains challenging. Herein, it is reported that light irradiation enables generation maintenance state over copper single atoms carbon dioxide reduction. Under light, photogenerated electrons transit Cu‐3 d orbits initiate ‐orbital...

Lithium-sulfur (Li-S) batteries are widely studied because of their high theoretical specific capacity and environmental friendliness. However, the further development Li-S is hindered by shuttle effect lithium polysulfides (LiPSs) sluggish redox kinetics. Since adsorption catalytic conversion LiPSs mainly occur on surface electrocatalyst, regulating structure electrocatalysts an advisable strategy to solve obstacles in batteries. Herein, CoP nanoparticles with oxygen content embedded hollow...

Lithium (Li) dendrite growth in a routine carbonate electrolyte (RCE) is the main culprit hindering practical application of Li metal anodes. Herein, we realize regulation LiPF6 decomposition pathway RCE containing 1.0 M by introducing "self-polymerizing" additive, ethyl isothiocyanate (EITC), resulting robust LiF-rich solid interphase (SEI). The effect 1 vol % EITC on electrode/electrolyte interfacial chemistry slows formation byproduct LixPOFy. Such SEI with polymer winding exhibits high...

To meet the requirements for industrial water splitting to generate hydrogen, it is urgent, but still quite challenging develop highly active and stable electrocatalysts large-current-density hydrogen evolution reaction (HER). Herein, Ru-incorporated NiSe2 (Ru-NiSe2 ) was designed synthesized. The introduction of Ru results in formation hierarchically structured Ru-NiSe2 with large electrochemical surface area, well-modified electronic structure. As expected, as-fabricated displays...

Perovskite materials are regarded as promising photocatalysts for light harvesting, yet they exhibit low photocatalytic activity due to serious charge recombination and lack of efficient catalytic sites toward CO2 reduction. Previous studies have employed perovskites reductive sides in a Z-scheme heterojunction suppress recombination, which however still encounter selectivity because the absence specific In this work, we report strategy that enables CsPbBr3 perovskite methanation. The...

Transparent conductive oxide (TCO) films, known for their role as carrier transport layers in solar cells, can be adversely affected by hydrolysis products from encapsulants. In this study, we explored the morphology, optical-electrical properties, and deterioration mechanisms of In2O3-based TCO films under acetic acid stress. A reduction film thickness concentration due to acid-induced corrosion was observed. X-ray photoelectron spectroscopy inductively coupled plasma emission spectrometry...

Abstract Perovskite solar cells (PSCs) have achieved revolutionary progress during the past decades with a rapidly boosting rate in power conversion efficiencies from 3.8% to 26.1%. However, high‐efficiency PSCs organic hole‐transporting materials (HTMs) suffer inferior long‐term stability and high costs. The replacement of HTMs inorganic counterparts such as metal oxides can solve above‐mentioned problems realize highly robust cost‐effective PSCs. Nevertheless, widely used simple...