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Frontiers Science Center for Flexible Electronics (FSCFE), MIIT Key Laboratory of Flexible Electronics (KLoFE), Northwestern Polytechnical University, Xi'an, 710072, China.
NaV(PO), based on multi-electron reactions between V/V/V, is a promising cathode material for SIBs. However, its practical application is hampered by the inferior conductivity, large barrier of V/V, and stepwise phase transition. Herein, these issues are addressed by constructing a medium-entropy material (NaVTiAlCrMnNi(PO), ME-NVP) with strong ME─O bond and highly occupied Na2 sites.
View Article and Find Full Text PDFRational Design of Prussian Blue Analogues for Ultralong and Wide-Temperature-Range Sodium-Ion Batteries.
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Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Material, Shandong University, Jinan 250100, China.
Architecting Prussian blue analogue (PBA) cathodes with optimized synergistic bimetallic reaction centers is a paradigmatic strategy for devising high-energy sodium-ion batteries (SIBs); however, these cathodes usually suffer from fast capacity fading and sluggish reaction kinetics. To alleviate the above problems, herein, a series of early transition metal (ETM)-late transition metal (LTM)-based PBA (Fe-VO, Fe-TiO, Fe-ZrO, Co-VO, and Fe-Co-VO) cathode materials have been conveniently fabricated via an "acid-assisted synthesis" strategy. As a paradigm, the FeVO-PBA (FV) delivers a superb rate capability (148.
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Angew Chem Int Ed Engl
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Fudan University, Laboratory of Advanced Materials, Shanghai, 200433, Shanghai, CHINA.
Tellurium (Te), with its rich valence states (-2 to +6), could endow aqueous batteries with potentially high specific capacity. However, achieving complete and stable hypervalent Te0/Te4+ electrochemistry in an aqueous environment poses significant challenges, owing to the sluggish reduction kinetics, the easy dissolution of Te4+ species, and a controversial energy storage mechanism. Herein, for the first time, we demonstrate an amorphous strategy for robust aqueous TeO2/Te electrochemistry.
View Article and Find Full Text PDFCoO-RuO/TiCT MXene Electrocatalysts for Oxygen Evolution Reaction in Acidic and Alkaline Media.
ChemSusChem
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Department of Chemistry, Soongsil University, Seoul, 06978, South Korea.
MXene 2D materials and non-noble transition metal oxide nanoparticles have been proposed as novel pH-universal platforms for oxygen evolution reaction (OER), owing to the enhancement of active site exposures and conductivity. Herein, CoO-RuO /TiCT/carbon cloths (CRMC) were assembled in a facile way as an efficient OER platform through a hydrothermal process. The CoO-RuO/TiCT demonstrated prominent OER catalytic performance under acidic and alkaline conditions, which showed overpotential values of 195 and 247 mV at 10 mA cm with Tafel slopes of 93 and 97 mVdec, respectively.
View Article and Find Full Text PDFOne-dimensional multilevel stalactite-like NiS-Fe(MoS) bifunctional electrocatalyst with excellent oxygen evolution reaction and overall water splitting performance.
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School of Physics and Technology, University of Jinan, Jinan 250022, PR China. Electronic address:
Sluggish multi-electron transfer process of the oxygen evolution reaction (OER) hinders the further advancement of electrolysis for hydrogen production. Here, a one-dimensional multilevel stalactite-like NiS-Fe(MoS) with excellent oxygen evolution performance was successfully synthesized using a universal two-step hydrothermal method. The nanorod arrays increase the active area and promote electron transfer.
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