Ultra‐Strong and Proton Conductive Aqua‐Based Adhesives from Facile Blending of Polyvinyl Alcohol and Tungsten Oxide Clusters

Supramolecular complex of polyvinyl alcohol (PVA) and phosphotungstic acid (PTA) is easily fabricated by solution blending. Well-dispersed PTA significantly improves the complex's dimensional stability by greatly reducing PVA crystallinity without sacrificing mechanical properties since the dense hydrogen bonds between PVA and PTA can serve as physical...

14m

Managing Challenges in Organic Photovoltaics: Properties and Roles of Donor/Acceptor Interfaces

Donor/acceptor interfacial properties strongly influence the performance of organic photovoltaics via processes such as charge transfer, delocalization, and recombination that can set the fundamental efficiency limit of such devices. The screening of this interface can provide the tools (interfacial modification) to optimize the trade-off in device...

2h

Regulation of Quantum Wells Width Distribution in 2D Perovskite Films for Photovoltaic Application

A systematic understanding of phase distribution mechanism in 2D perovskite films is critical for the development of high-performance 2D perovskite solar cells (PSCs). A systematic understanding of phase distribution and guidelines on 2D perovskite phase regulation is provided, aiming for establishing a general manual for efficient charge-carrier transport...

2h

Monodispersed FeS2 Electrocatalyst Anchored to Nitrogen‐Doped Carbon Host for Lithium–Sulfur Batteries

A nitrogen-doped continuous porous carbon (CPC) host anchoring monodispersed sub-10 nm FeS2 nanoclusters (CPC@FeS2) is fabricated as an efficient catalytic matrix for sulfur cathode. This host shows inhibition of polysulfide shuttle, fast Li-ion diffusion, and accelerated solid–solid conversion kinetics of Li2S2 to Li2S, promising a high energy density...

2h

Carbon‐Shielded Single‐Atom Alloy Material Family for Multi‐Functional Electrocatalysis

A universal single-atom alloy strategy is proposed to precisely manipulate the surface electronic structure of carbon-encapsulated electrocatalysts, thus simultaneously achieving the catalytic multifunctionality, catalytic activity promotion, and durability maintenance. Theoretical calculation discloses the relationship among various single atoms, surface...

2h

Phonon‐Dominated Energy Transport in Purely Metallic Heterostructures

Researchers in various branches of physical sciences assume that electrons are the main carriers of thermal energy in metals. Here, ultrafast X-ray diffraction quantifies energy transport in metallic nanoscale heterostructures. Modeling the data with two-temperature models that describe the non-equilibrium of electrons and phonons shows that phonons...

2h

Asymmetric Coordination of Single‐Atom Co Sites Achieves Efficient Dehydrogenation Catalysis

The coordination environments of atomically dispersed active sites are significant for modulating the activity and selectivity. A novel asymmetrically coordinated Co-N4P SA site is reported to achieve superior dehydrogenation catalysis of HCOOH with high activity, 100% selectivity, and outstanding stability under a mild condition. This work offers advanced...

2h

Tough Hydrogels with Isotropic and Unprecedented Crack Propagation Resistance

A universal strategy for the preparation of hydrogels with isotropic and unprecedented crack propagation resistance is presented. The hydrogels integrate the seemingly contradictory mechanical properties such as ultra-stretchability, fatigue resistance, tear resistance, and high toughness by the interpenetrating entanglements of polymer chains in the...

2h

Regulating the Two‐Stage Accumulation Mechanism of Inactive Lithium for Practical Composite Lithium Metal Anodes

The two-stage accumulation mechanism of inactive Li in composite Li metal anodes and its correlation with the stability of composite Li metal anodes are comprehensively unveiled in pouch cells, which provides rational design principles of composite Li metal anodes for long-cycling Li metal pouch cells. Abstract The rapid formation and accumulation...

2h

Activated Proton Storage in Molybdenum Selenide through Electronegativity Regulation

This work demonstrates an electronegativity regulation strategy through incorporating oxygen to achieve high performance aqueous zinc-based batteries. Compared to pure MoSe2, the oxygen doped MoSe2 displays higher affinity for protons and realizes a more favorable H+ insertion kinetics benefiting from the high electronegativity. The oxygen doping strategy...

2h