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Improving the fast-charging capability of NbWO-based Li-ion batteries.
Nat Commun
March 2025
College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, China.
The discovery of Nb-W-O materials years ago marks the milestone of charging a lithium-ion battery in minutes. Nevertheless, for many applications, charging lithium-ion battery within one minute is urgently demanded, the bottleneck of which largely lies in the lack of fundamental understanding of Li storage mechanisms in these materials. Herein, by visualizing Li intercalated into representative NbWO, we find that the fast-charging nature of such material originates from an interesting rate-dependent lattice relaxation process associated with the Jahn-Teller effect.
View Article and Find Full Text PDFThe Jahn-Teller Effect: A Significant Influence on Single-atom Sites Catalysts for CO2 Photoreduction.
ChemSusChem
March 2025
Tiangong University, College of Chemical Engineering and Technology, CHINA.
The pursuit of efficient photocatalytic materials has gained momentum because of increasing concerns over climate change and the urgent need for sustainable energy solutions. The Jahn-Teller effect is a fundamental phenomenon prevalent in metal complexes and exerts a significant influence on the design and performance of catalytic systems. It affects the redistribution of d-orbital electrons, thus impacting electron transfer efficiency, the stability of reaction intermediates, and the adsorption energies of reactants, ultimately resulting in enhanced catalytic efficiency.
View Article and Find Full Text PDFMFCO spinel anchored on N-rGO is synthesized by a two-step hydrothermal method as a bifunctional electrocatalyst. Its physicochemical properties have been characterized and tested, and it is applied to zinc-air batteries. The experimental and theoretical calculations show that the MFCO is uniformly distributed on the surface of N-rGO.
View Article and Find Full Text PDFStrong Kinetic Effects in the Order-Disorder Transformation of Cu Hydroxyfluorides and Impact on Magnetic Properties.
Inorg Chem
March 2025
CNRS, University of Bordeaux, Bordeaux INP, ICMCB UMR CNRS 5026, Pessac F-33600, France.
A Cu(OH)F hydroxyl-rich copper hydroxyfluoride polymorph, denoted as Cu-2/, was synthesized through coprecipitation or microwave-assisted hydrothermal synthesis. The structural features were compared to the disordered brucite-like Cu(OH)F polymorph (Cu--31) studied previously. The synthesis conditions were modified by playing with time and temperature in order to understand the allotropic transformation between the two polymorphs.
View Article and Find Full Text PDFEnhancing the Reversibility and Kinetics of Heterovalent Ion-Substituted Mn-Based Prussian Blue Analogue Cathodes via Intervalence Charge Transfer.
Angew Chem Int Ed Engl
February 2025
Key Laboratory of Special Functional Aggregated Materials (Ministry of Education), School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong, 250100, P. R. China.
Mn (d) in manganese-based Prussian blue analogues (MnPBA) exhibits intrinsic orbital degeneracy upon sodiation/desodiation, resulting in severe Jahn-Teller distortion, which usually causes rapid capacity decay and sluggish kinetics. Unfortunately, traditional modification strategies are insufficient for electronic tuning of Mn to mitigate these issues. Herein, Intervalence Charge Transfer (IVCT) of manganese and iron to vanadium ions is unraveled in a series of novel V-substituted MnPBA to enhance electrochemical reaction reversibility and kinetics.
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