Triple-Doped Rare-Earth Nanoemitters for Two-Photon 3D Printing of Chip-Scale Polymer Optical Waveguide Amplifiers 来源：ACS PublicationsPolymers with gain media can enable 3D printing of chip-scale optical amplifiers and lasers. In this work, a 3D-printable resin containing uniform dispersion of core/shell erbium–ytterbium–cerium codoped rare-earth nanoparticles (RENPs) is designed, synthesized, and characterized. The core/shell RENPs (NaYF4:Er3+,Yb3+,Ce3+@NaYF4) are synthesized by a high-temperature thermal decomposition method. Uniform dispersion at high concentrations of the RENPs in a 3D pri...
Release time:
2025
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来源：ACS PublicationsMethanol crossover severely limits the performance of direct methanol fuel cells (DMFCs) by introducing methanol to the cathode compartment, where it competes with the oxygen reduction reaction (ORR) and poisons platinum-based ORR electrocatalysts, making it essential to develop methanol-tolerant ORR electrocatalysts. Here, Ni doping is explored as a means of improving the electrocatalytic activity and methanol tolerance of LaCo1–xNixO3 (x = 0, 0.1, 0.15, and 0.2) perovskite oxide electrocatalysts synthesized using a simple sol–gel method. X-ray diffraction (XRD), Fourier tr...
Release time:
2025
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Constructing Electron- and Surface-Structure-Controlled Crystalline/Amorphous Hierarchical NiTe/NiFeCe-LDH Nanoarrays for Efficient Overall Water Splitting 来源：ACS PublicationsConstructing nonprecious metal-based telluride heterointerfaces provides an effective strategy for developing efficient bifunctional catalysts for overall water splitting. However, there still remain major challenges for catalysts that rely on constructing heterojunction interfaces to obtain high-active sites with optimized electronic structures to achieve an efficient oxygen evolution reaction (OER). Herein, hierarchical...
Release time:
2025
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Synergistic Adsorption-Catalysis by Co/Ce Dual Single Atoms Trapped in Hollow Carbon Spheres Boosts Li–S Battery Performance来源：ACS PublicationsLithium–sulfur (Li–S) batteries have a deteriorating capacity under the circumstances of the lithium polysulfide (LiPS) shuttle effect, which disrupts S8-to-Li2S conversion kinetics and shortens the cycle life. In this study, we engineered Co/Ce dual single atom catalysts anchored on nitrogen-doped hollow carbon spheres to mitigate the shuttle effect by adsorption-catalysis design. Ce sites exhibit stronger adsorption affinity for long-chain LiPS via th...
Release time:
2025
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