Isolated single-atom platinum (Pt) embedded in the sub-nanoporosity of 2D g-C3 N4 as a new form co-catalyst is reported. The highly stable maximizes atom efficiency and alters surface trap states , leading to significantly enhanced photocatalytic H2 evolution activity, 8.6 times higher than that Pt nanoparticles up 50 for bare .

With the rapid development of portable electronics, such as e-paper and other flexible devices, practical power sources with ultrathin geometries become an important prerequisite, in which supercapacitors in-plane configurations are recently emerging a favorable competitive candidate. As is known, electrode materials two-dimensional (2D) permeable channels, high-conductivity structural scaffolds, high specific surface areas indispensible requirements for superior performance, while it...

Exploring efficient and inexpensive oxygen evolution reaction (OER) electrocatalysts is of great importance for various electrochemical energy storage conversion technologies. Ni-based have been actively pursued because their promising activity earth abundance. However, the OER efficiency most developed has intrinsically limited due to low electrical conductivity poor active site exposure yield. Herein, we report metallic Ni3N nanosheets as an electrocatalyst first time. The first-principles...

Abstract Rational design of non‐noble materials as highly efficient, economical, and durable bifunctional catalysts for oxygen evolution reduction reactions (OER/ORR) is currently a critical obstacle rechargeable metal‐air batteries. A new route involving S was developed to achieve atomic dispersion Fe‐N x species on N co‐decorated hierarchical carbon layers, resulting in single‐atom OER/ORR the first time. The abundant atomically dispersed are catalytically active, structure offers more...

Electrochemical reduction of carbon dioxide (CO2) to value-added products is a promising approach reduce CO2 levels and mitigate the energy crisis. However, poor product selectivity still major obstacle development reduction. Here we demonstrate exclusive Ni–N4 sites through topo-chemical transformation strategy, bringing unprecedentedly high activity for Topo-chemical by layer coating successfully ensures preservation structure maximum extent avoids agglomeration Ni atoms particles,...

Planar supercapacitors have recently attracted much attention owing to their unique and advantageous design for 2D nanomaterials based energy storage devices. However, improving the electrochemical performance of planar still remains a great challenge. Here we report first time novel, high-performance in-plane supercapacitor on hybrid nanostructures quasi-2D ultrathin MnO2/graphene nanosheets. Specifically, structures δ-MnO2 nanosheets integrated graphene sheets not only introduce more...

Designing highly efficient electrocatalysts for oxygen evolution reaction (OER) plays a key role in the development of various renewable energy storage and conversion devices. In this work, we developed metallic Co4N porous nanowire arrays directly grown on flexible substrates as active OER first time. Benefiting from collaborative advantages character, 1D arrays, unique 3D electrode configuration, surface oxidation activated arrays/carbon cloth achieved an extremely small overpotential 257...

We demonstrated in this paper the shape-controlled synthesis of hematite (α-Fe2O3) nanostructures with a gradient diameters (from less than 20 nm to larger 300 nm) and surface areas 5.9 52.3 m2/g) through an improved synthetic strategy by adopting high concentration inorganic salts temperature systems influence final products nanostructures. The benefits present work also stem from first report on <20-nm-diameter porous nanorods, as well new facile less-than-20-nm because diameter size meets...

Developing non‐noble‐metal electrocatalysts with high activity and low cost for both the oxygen evolution reaction (OER) hydrogen (HER) is of paramount importance improving generation H 2 fuel by electrocatalytic water‐splitting. This study puts forward a new N‐anion‐decorated Ni 3 S material synthesized simple one‐step calcination route, acting as superior bifunctional electrocatalyst OER/HER first time. The introduction N anions significantly modifies morphology electronic structure ,...

Abstract The electrocatalyzed oxygen reduction and evolution reactions (ORR OER, respectively) are the core components of many energy conversion systems, including water splitting, fuel cells, metal–air batteries. Rational design highly efficient non‐noble materials as bifunctional ORR/OER electrocatalysts is great importance for large‐scale practical applications. A new strongly coupled hybrid material presented, which comprises CoO x nanoparticles rich in vacancies grown on B,N‐decorated...

We report a facile one step method for fabricating g-C₃N₄nanosheets with enhanced photocatalytic H₂evolution activity.

The direct urea fuel cell (DUFC), as an efficient technology for generating power from urea, shows great potential energy-sustainable development but is greatly hindered by the slow kinetics of oxidation reaction (UOR). Herein, we highlighted a defect engineering strategy to design oxygen vacancy-rich NiMoO4 nanosheets promising platform study relationship between O vacancies and UOR activity. Experimental/theoretical results confirm that rich confined in successfully bring synergetic...

Abstract Gel electrolytes have attracted increasing attention for solid-state supercapacitors. An ideal gel electrolyte usually requires a combination of advantages high ion migration rate, reasonable mechanical strength and robust water retention ability at the solid state ensuring excellent work durability. Here we report zwitterionic that successfully brings synergic channels, manifesting in superior electrochemical performance. When applying electrolyte, our graphene-based supercapacitor...

Abstract Developing highly active catalysts for the oxygen evolution reaction (OER) is of paramount importance designing various renewable energy storage and conversion devices. Herein, we report synthesis a category Co‐Pi analogue, namely cobalt‐based borate (Co‐B i ) ultrathin nanosheets/graphene hybrid by room‐temperature approach. Benefiting from high surface sites exposure yield, enhanced electron transfer capacity, strong synergetic coupled effect, this Co‐B NS/G shows catalytic...

Surface/interface nanoengineering of electrocatalysts and air electrodes will promote the rapid development high-performance rechargeable Zn–air batteries.

High-purity pyrrole-type FeN₄ sites have been developed as a superior oxygen reduction catalyst for proton exchange membrane fuel cells.

Utilizing a thin film of VS2 ultrathin nanosheets with giant and fast moisture responsiveness, brand-new model moisture-based positioning interface is put forward here, by which not only the 2D position information finger tips can be acquired, but also relative height detected as third dimensionality, representing promising platform for advanced man-machine interactive systems. Detailed facts importance to specialist readers are published ”Supporting Information”. Such documents...

Phase-transformation engineering is successfully applied in designing an alkaline hydrogen evolution reaction (HER) electrocatalyst. Benefiting from phase-transformation engineering, which endows higher electrical conductivity, ideal water adsorption energy, and faster transformation efficiency of Hads into hydrogen, cubic-phase CoSe2 realizes enhanced electrocatalytic activity for HER under conditions. As a service to our authors readers, this journal provides supporting information...

Electrochemical conversion of CO2 to value-added chemicals using renewable electricity provides a promising way mitigate both global warming and the energy crisis. Here, facile ion-adsorption strategy is reported construct highly active graphene-based catalysts for reduction CO. The isolated transition metal cyclam-like moieties formed upon ion adsorption are found contribute observed improvements. Free from conventional harsh pyrolysis acid-leaching procedures, this solution-chemistry easy...