来源：ACS PublicationsP2-type NaxLiyMn1–yO2 layered oxides represent a promising class of cathode materials for sodium-ion batteries, capable of delivering a high specific capacity by leveraging anionic redox reactions. However, their practical application is often hampered by issues such as Na+/vacancy ordering and irreversible oxygen release, which significantly impair the rate capability and cycling stability. To address the aforementioned problem, this work demonstrates that introducing trace La into P2–Na0.6Li0.2Mn0.8O2 fundamentally alters the Na+ distribution between Nae and Naf sites in t...
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2025
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Magnetic NaA Zeolites Synthesized from Dual Solid Wastes Enables Selective Efficient Recovery of Rare Earth Ions from Neodymium Iron Boron Electroplating Wastewater来源：ACS PublicationsThis research leverages the minor iron oxides and carbon contained in Bayan Obo tailings (BOT) and coal gangue for the synthesis of magnetic zeolite NaA, which was subsequently applied to recover and separate rare earth elements (REEs) from Nd–Fe–B passivation solutions. To control the synthesis conditions of the magnetic zeolite, the effects of different raw material ratios, silicon/aluminum ratios, alkali fusion...
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2025
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Defect Structure and Anion Conduction in Lanthanum Oxychloride Solid Solutions Revealed by X-ray Excited Optical Luminescence and Auger Emission来源：ACS PublicationsIon transport in crystalline solids is governed by the interplay between mobile ions and the host framework; ion mobility is facilitated by local structural distortions, dynamical evolution in the local coordination environment of the mobile ion, and coupling with lattice phonons. Ion dynamics are strongly influenced by the size and hardness of the mobile ion and the rigidity and polarizability of the host framework, as well as by th...
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2025
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来源：ACS PublicationsMetal cation doping in hybrid perovskite semiconductors is one of the most effective approaches for tailoring their optoelectronic properties. However, their location-dependent functional mechanisms within the photoactive layer of perovskite solar cells (PSCs) remain poorly understood. Herein, we report that redox-stable samarium cations (Sm3+) enhance the performance of the PSC via partial substitution of lead ions (Pb2+). The optimized concentration of Sm3+ (5%) modulates the crystal quality, defect density, and charge carrier behavior of the perovskite layer. As a result,...
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2025
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