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Beyond Inducing Anionic Redox: Controllable Migration Sequence of Li Ions in Transition Metal Layers Toward Highly Stable Li-Rich Cathodes.
Adv Mater
January 2025
Center of Energy Storage Materials and Technology, College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, National Laboratory of Solid-State Microstructures and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, P. R. China.
The energy density of layered oxides of Li-ion batteries can be enhanced by inducing oxygen redox through replacing transition metal (TM) ions with Li ions in the TM layer. Undesirably, the cathodes always suffer from unfavorable structural degradation, which is closely associated with irreversible TM migration and slab gliding, resulting in continuous capacity and voltage decay. Herein, attention is paid to the Li ions in the TM layer (Li) and find their extra effects beyond inducing oxygen redox, which has been rarely mentioned.
View Article and Find Full Text PDFModification strategies of bismuth-based halide perovskites for solar to fuel conversion by photocatalytic CO2 reduction.
ChemSusChem
January 2025
Xian Jiaotong University, School of Chemical Engineering and Technology, Xianning west road 8th, School of Chemical Engineering and Technology, 710049, Xi'an, CHINA.
In light of the increasingly pressing energy and environmental challenges, the use of photocatalysis to convert solar energy into chemical energy has emerged as a promising solution. Halide perovskites have recently attracted considerable interest as photocatalysts due to their outstanding properties. Early developments focused on Lead-based perovskites, but their use has been severely restricted due to the toxicity of Lead.
View Article and Find Full Text PDFA deoxyfluoroalkylation-aromatization strategy to access fluoroalkyl arenes.
Chem Commun (Camb)
January 2025
Borch Department of Medicinal Chemistry, Purdue University, West Lafayette, IN, 47906, USA.
Fluoroalkyl arenes (Ar-R) are valuable substructures present in several FDA-approved drugs, patents, agrochemicals, and materials, and complementary strategies that enable access to a broad spectrum of Ar-R compounds benefit these applied fields. Herein, we report a deoxyfluoroalkylation-aromatization strategy to convert cyclohexanones into broad-spectrum Ar-R containing compounds. Generally, the fluoroalkyl sources were activated to participate in a 1,2-addition reaction followed by aromatization in a sequence that contrasts more common preparations of these Ar-R compounds, such as (i) transition-metal catalyzed cross-coupling reactions of aryl electrophiles and nucleophiles, and (ii) radical fluoroalkylation reactions of C-H bonds of arenes.
View Article and Find Full Text PDFIn-Plane Anisotropy in van der Waals NiTeSe Ternary Alloy.
Adv Sci (Weinh)
January 2025
Department of Physics, University of Ulsan, Ulsan, 44610, Republic of Korea.
The anisotropic properties of materials profoundly influence their electronic, magnetic, optical, and mechanical behaviors and are critical for a wide range of applications. In this study, the anisotropic characteristics of Ni-based van der Waals materials, specifically NiTe and its alloy NiTeSe, utilizing a combination of comprehensive scanning tunneling microscopy (STM), angle-resolved photoemission spectroscopy (ARPES), and density functional theory (DFT) calculations, are explored. Unlike 1T-NiTe, which exhibits trigonal in-plane symmetry, the substitution of Te with Se in NiTe (resulting in the NiTeSe alloy) induces a pronounced in-plane anisotropy.
View Article and Find Full Text PDFEncapsulated FeC boosted electrocatalytic performance for oxygen reduction reaction of N-doped carbon nanotube.
Heliyon
January 2025
School of Aerospace Engineering, Xi'an Jiaotong University, Xi'an, 710049, China.
The shortcomings of precious metal based catalysts have limited the development of novel energies. So, developing low-cost and high performance transition metal based catalysts is one of the most feasible way to substitute the precious metal based catalysts. In all of the developed catalysts for oxygen reduction reactions (ORR), the iron-based nitrogen doped carbon nanotube (N-CNT) show great promise.
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