Abstract It is of fundamental and technological significance to develop dual‐role anode materials for both lithium‐ion batteries (LIBs) sodium‐ion (SIBs) with high performance. Here, a composite material based on CoSe 2 nanoparticles encapsulated in N‐doped carbon framework intertwined nanotubes (CoSe @N‐CF/CNTs) prepared successfully from cobalt‐based zeolitic imidazolate (ZIF‐67). As LIBs, @N‐CF/CNTs composites deliver reversible capacity 428 mAh g −1 even after 500 cycles at current...

Constructing a solid electrolyte interface (SEI) is highly effective approach to overcome the poor reversibility of lithium (Li) metal anodes. Herein, an adhesive and self-healable supramolecular copolymer, comprising pendant poly(ethylene oxide) (PEO) segments ureido-pyrimidinone (UPy) quadruple-hydrogen-bonding moieties, developed as protection layer Li anode by simple drop-coating. The performance in-situ-formed LiPEO-UPy SEI significantly enhanced owing strong binding improved stability...

To date, controversies remain in the unambiguous identification of active sites N-doped carbons for oxygen reduction reaction (ORR). In present study, prolonged potential cycling was conducted on three O2-saturated 0.1 M KOH aqueous solution, where apparent attenuation ORR activity observed, within context limiting current and onset potential. The trend closely correlated with diminishing content graphitic N, as manifested X-ray photoelectron spectroscopy measurements Mott–Schottky analysis....

Abstract The redox center of transition metal oxides and hydroxides is generally considered to be the site. Interestingly, proton oxygen in lattice recently are found actively involved catalytic reactions, critically determine reactivity. Herein, taking glycerol electrooxidation reaction as model reaction, we reveal systematically impact anion (de)intercalation processes on elementary steps. Combining density functional theory calculations advanced spectroscopy techniques, find that doping...

Abstract Localized surface plasmon resonance (LSPR) excitation of noble metal nanoparticles has been shown to accelerate and drive photochemical reactions. Here, LSPR is enhance the electrocatalysis a fuel‐cell‐relevant reaction. The electrocatalyst consists Pd x Ag alloy nanotubes (NTs), which combine catalytic activity toward methanol oxidation reaction (MOR) visible‐light plasmonic response Ag. exhibits enhanced MOR under with significantly higher current densities shift more positive...

Abstract High entropy alloy (HEA) catalysts exhibit excellent multifunctional catalytic performance due to the synergistic effect of multi‐metal components. However, shape‐controlled synthesis such kinds HEA catalysts, especially those with high index facets, still faces great challenges, limiting further enhancement their performance. Herein, one‐pot convex cube‐shaped Pt 34 Fe 5 Ni 20 Cu 31 Mo 9 Ru which possess rich (310) facets and a diagonal crystalline size 38.5 nm is reported....

Abstract High entropy metal oxides (HEO) are superior to many reactions involving multi‐step elementary reactions. However, controlled synthesis of hollow‐structured HEO catalysts, which offers large surface area and fast mass transfer kinetics, remains challenging unexplored due the complicated precursors. Herein, a organic framework‐templated polyhedron‐shaped catalysts assembled with ultra‐small nanoparticles, up ten elements, can be achieved, by taking advantage ion‐exchange method....

Abstract The design of bifunctional electrocatalysts toward reduction reaction carbon dioxide (ECO 2 RR) and oxygen evolution (OER) in aqueous rechargeable Zn─CO batteries (ZABs) still poses a significant challenge. Herein, Ni clusters (Ni x ) 0.5 0.8 nm diameter coupled with single site (Ni−N 4 −C), denoted as Ni−N /Ni 5 8 , respectively, are synthesized the size effect nanoclusters studied. exhibits an ≈100% Faradaic efficiency ( FE CO ECO RR for from −0.4 to −0.8 V versus reversible...

Integrating high-entropy philosophy and nanocrystal-specific orientation into a single catalyst represents promising strategy in development of high-performance catalysts. Nonetheless, shape-controlled synthesis alloy (HEA) nanocrystals is challenging owing to the distinct redox potentials growth dynamics metal elements. Herein, one-pot co-reduction method developed fabricate ruthenium (Ru)-doped PtFeNiCuW octahedral HEA onto carbon nanotubes (Ru-PtFeNiCuW/CNTs). It demonstrated that Ru dopants W(CO)

Nitrogen and sulfur‐codoped graphene composites with Co 9 S 8 (NS/rGO‐Co) are synthesized by facile thermal annealing of oxides cobalt nitrate thiourea in an ammonium atmosphere. Significantly, 0.1 m KOH aqueous solution the best sample exhibits oxygen evolution reaction (OER) activity that is superior to benchmark RuO 2 catalysts, reduction (ORR) comparable commercial Pt/C, overpotential only −0.193 V reach 10 mA cm −2 for hydrogen (HER). With this single catalyst reversible...

Conventional squaraine dyes exhibit an intense absorption band in the red region of solar spectrum and with appropriate design can also have high energy as well, making them interesting building blocks toward achieving panchromatic for dye sensitized cell (DSSC) applications. In this report, eight thiophene, 4-hexyl-4H-dithieno[3,2-b:2′,3′-d]pyrrole, dithieno[3,2-b:2′,3′-d]thiophene, 4,4-bis(2-ethylhexyl)-4H-silolo[3,2-b:4,5-b′]dithiophene (DTS) π-bridges cyanoacetic acid (CA)...

Electroreduction of carbon dioxide (CO₂RR) into fuels and chemicals is an appealing approach to tackle CO₂ emission challenges.

N incorporation induces d orbital tuning and promotes water dissociation on Ru, while single Pt atoms facilitate H desorption. The two effects synergistically enable the excellent alkaline HER performance an N-doped Pt–Ru atom alloy.

We report the first all-alkynyl-protected Au 2 Ag 8 Cu 5 cluster, which adopts a M@M @M 6 core configuration similar with 7 /Ag 9 clusters. The three clusters exhibited strong metal effect toward CO RR, was understood by DFT calculations.

Abstract Structure engineering has proven to be an effective strategy for improving the catalytic performance and reducing cost of ruthenium oxide‐based catalysts toward oxygen evolution reactions (OER). Herein, a polyhedron‐shaped yolk‐shell structure composed zinc‐cobalt‐ruthenium ternary metal alloy oxide (ZnCo‐RuO 2 /C) is prepared, by taking advantage Kirkendall effect. The frame ensembled nanoparticles are 116.9 ± 25.9 nm 3.1 0.7 in diameter, respectively. porous ZnCo‐RuO /C exposes...

Chlorophenyl-stabilized platinum nanoparticles (1.85 nm) exhibited electrocatalytic activity for oxygen reduction up to 3 times higher than that of commercial Pt/C catalysts. Similar enhancement was observed with naked functionalized by the same chlorophenyl fragments, suggesting important role organic capping ligands in manipulation nanoparticle performance.

High-performance electrocatalysts for oxygen reduction reactions (ORR) are crucial the development of proton exchange membrane fuel cells (PEMFCs). In this study, a novel method was developed by which ORR activity Pt nanoparticles deliberately manipulated selective organic capping ligands. By coreduction diazonium salts and H2PtCl4, series (core size 2.0–2.5 nm) stabilized para-substituted (R = −CH3, −F, −Cl, −OCF3, −CF3) phenyl groups were synthesized. The experimental results demonstrated...