Fuzhou University

Abstract: Among the current industrial hydrogen production technologies, electrolysis has attracted widespread attention due to its zero carbon emissions and sustainability.However, the existence of overpotential caused by reaction activation, mass/charge transfer, etc. makes the actual water splitting voltage higher than the theor. value, severely limiting the industrial application of this technol.Therefore, it is particularly important to design and develop highly efficient electrocatalysts to reduce overpotential and improve energy efficiency.Among the various synthesis methods of electrocatalysts, electrochem. synthesis stands out due to its simplicity, easy reaction control, and low cost.This review article classifies and summarizes the electrochem. synthesis techniques (including electrodeposition, electrophoretic deposition, electrospinning, anodic oxidation, electrochem. intercalation, and electrochem. reconstruction), followed by their application in the field of water electrolysis.In addition, some challenges currently faced by electrochem. synthesis in electrocatalytic hydrogen production, and their potential solutions are discussed to promote the practical application of electrochem. synthesis in water electrolysis.Graphical Abstract: This review summarizes and classifies commonly used electrochem. synthesis techniques, followed by the application of electrochem. synthesis methods in research on water electrolysis.Addnl., some challenges faced by electrochem. synthesis in the field of water electrolysis and possible solutions are discussed.

To adapt to the trend of increasing miniaturization and high integration of microelectronic equipments, there is a high demand for multifunctional thermally conductive (TC) polymeric films combining excellent flame retardancy and low dielectric constant (ε). To date, there have been few successes that achieve such a performance portfolio in polymer films due to their different and even mutually exclusive governing mechanisms. Herein, we propose a trinity strategy for creating a rationally engineered heterostructure nanoadditive (FG@CuP@ZTC) by in situ self-assembly immobilization of copper-phenyl phosphonate (CuP) and zinc-3, 5-diamino-1,2,4-triazole complex (ZTC) onto the fluorinated graphene (FG) surface. Benefiting from the synergistic effects of FG, CuP, and ZTC and the bionic lay-by-lay (LBL) strategy, the as-fabricated waterborne polyurethane (WPU) nanocomposite film with 30 wt% FG@CuP@ZTC exhibits a 55.6% improvement in limiting oxygen index (LOI), 66.0% and 40.5% reductions in peak heat release rate and total heat release, respectively, and 93.3% increase in tensile strength relative to pure WPU film due to the synergistic effects between FG, CuP, and ZTC. Moreover, the WPU nanocomposite film presents a high thermal conductivity (λ) of 12.7 W m−1 K−1 and a low ε of 2.92 at 106 Hz. This work provides a commercially viable rational design strategy to develop high-performance multifunctional polymer nanocomposite films, which hold great potential as advanced polymeric thermal dissipators for high-power-density microelectronics.

Conjugated micro-mesoporous poly(aniline)s (CMPAs) synthesized through Buchwald-Hartwig coupling represent a cutting-edge material platform for selective sequestration of Hg (II) but suffer from moderate porosities and constrained availability of adsorption sites.Herein, we show a salt strategy for fine-tuning the porosity and Hg (II) adsorption performance of a series of S, N dual heteroatom functionalized CMPAs (CMPA-SN).The salt of NaF with appropriate dosage results in strikingly improved surface areas from 26 to 735 m²/g and intensified Hg (II) adsorption capacity from 311 mg/g to 649 mg/g.Moreover, CMPA-SN exhibits an efficient adsorption rate (h = 1250 mg/g/min) and excellent affinity with high K_d as high as 1.24 x 10⁶ mL/g.We successfully correlate the adsorption capacity and surface area, and reveal the synergistic electron-sharing mechanism from N-containing ligands and in-situ decorated S heteroatoms, with 67.6 %/32.4 % contributions and ΔE_ads = -0.419 eV/ΔE_ads = -0.487 eV adsorption energy.