Strong electronic coupling between single Ru atoms and cobalt-vanadium layered double hydroxide harness efficient water splitting

Electrochemically activated 3D Mn doped NiCo hydroxide electrode materials toward high-performance supercapacitors.

Aggregation-induced emission luminogen@manganese dioxide core-shell nanomaterial-based paper analytical device for equipment-free and visual detection of organophosphorus pesticide.

Fabrication of three-dimensional CuS2@CoNi2S4 core-shell rod-like structures as cathode and thistle-derived carbon as anode for hybrid supercapacitors

The interface mechanism between catalyst and carbon substrate has been the focus of research. In this paper, the FeCo alloy embedded N,S co-doped carbon substrate bifunctional catalyst (FeCo/S-NC) is obtained by a simple one-step pyrolysis strategy. The experimental results and density functional theory (DFT) calculation show that the formation of FeCo alloy is conducive to promoting electron transfer, and the introduction of S atom can enhance the interaction between FeCo alloy and carbon substrate, thus inhibiting the migration and agglomeration of particles on the surface of carbon material. The FeCo/S-NC catalysts show outstanding performance for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). FeCo/S-NC shows a high half-wave potential (E1/2 = 0.8823 V) for ORR and a low overpotential at 10 mA cm−2 (Ej=10 = 299 mV) for OER. In addition, compared with Pt/C+RuO2 assembled Zn-air battery (ZAB), the FeCo/S-NC assembled ZAB exhibits a larger power density (198.8 mW cm−2), a higher specific capacity (786.1 mA h gZn−1), and ultra-stable cycle performance. These results confirm that the optimized composition and the interfacial interaction between catalyst and carbon substrate synergistically enhance the electrochemical performance. 

Tuning interface mechanism of FeCo alloy embedded N,S-codoped carbon substrate for rechargeable Zn-air battery

Highly Dispersed La−O/N−C Sites Anchored in Hierarchically Porous Nitrogen-doped Carbon as Bifunctional Catalysts for High-Performance Rechargeable Zn−air Batteries

[CH3NH3][M(HCOO)3]-Based 2D porous NiCo2S4 nanosheets for high-performance supercapacitors with high power densities

Three novel aggregation induced emission (AIE) active molecules TriPE-PA, TriPE-α-NA and TriPE-β-NA were designed and successfully synthesized through a simple synthetic route. The position 9 of chromophore anthracene was introduced with the phenyl, 1-naphthyl and 2-naphthyl group, respectively, and afterwards the triphenylethylene was embedded as an AIE active group at position 10, thus generating two kinds of stable asymmetric configurations in the latter two compounds. These materials display sky-blue emission and typical AIE characteristics, among which TriPE-PA presents the best AIE phenomenon with an αAIE value (ΦF(Film)/ΦF(THF)) of 63. Subsequent studies show that they exhibit very similar photophysical and electrochemical properties. However, it was observed that the TriPE-α-NA and TriPE-β-NA performances were much superior to TriPE-PA when they all functioned as the non-doped emitting layers in OLEDs, among which TriPE-β-NA presented an over six times higher EQE value in comparison to TriPE-PA. This probably resulted from the support of double stable asymmetric configurations in TriPE-α-NA and TriPE-β-NA, which gives them a better membrane morphology and thermodynamic stability. The theories of energy traps at grain boundaries were employed to explain such a causal relationship. Such results reemphasize a neglected strategy which may be helpful for the design of new AIE materials with high stability of efficiency.

Asymmetric aggregation-induced emission materials with double stable configurations toward promoted performance in non-doped organic light-emitting diodes

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Highly Dispersed La−O/N−C Sites Anchored in Hierarchically Porous Nitrogen-doped Carbon as Bifunctional Catalysts for High-Performance Rechargeable Zn−air Batteries

[CH3NH3][M(HCOO)3]-Based 2D porous NiCo2S4 nanosheets for high-performance supercapacitors with high power densities

Asymmetric aggregation-induced emission materials with double stable configurations toward promoted performance in non-doped organic light-emitting diodes