Synergistic Bimetallic Effects of BiSb Anodes Enable Long‐Stable Sodium Storage

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 28, 2024

Abstract Alloy‐type anodes are of interest for their resource‐rich and high theoretical capacity performance in sodium‐ion batteries (SIBs). However, severe volume expansion may lead to rapid decay electrode pulverization. In this work, metallic Bi with better structure stability is rationally selected as a skeleton form 2D BiSb alloy alleviate the expansion. Interestingly, by combining in‐situ XRD ex‐situ TEM characterizations, reversible multi‐step alloying sodium storage mechanism ↔ Na(Bi, Sb) Na 3 (Bi, 0.4 Sb 0.6 anode elucidated, partial amorphization expanded interlayer spacing also revealed, which greatly thereby enhancing electrochemical stability. Furthermore, density functional theory kinetic calculations demonstrate that demonstrates lower + adsorption energy diffusion barriers, ensuring fast electron ion transportation during storage. Benefiting from synergistic effects binary alloy, exhibits cycling 446 mAh g −1 at 0.1 A , 70% after 1100 cycles 0.5 . This work provides new insights opportunities develop advanced precise alloy‐type materials SIBs.

Язык: Английский

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Monodisperse Manganese‐Vanadium‐Oxo Clusters with Extraordinary Lithium Storage

Advanced Science, Год журнала: 2024, Номер 11(29)

Опубликована: Июнь 3, 2024

Abstract Although possessing well‐defined nanostructures and excellent multi‐electron redox properties, polyoxometalate clusters have poor intrinsic electrical conductivity are prone to aggregation due large surface energy, which makes them difficult be fully utilized when applying as electrode materials for lithium‐ion batteries. In this paper, monodisperse K 7 MnV 13 O 38 (MnV ) achieved by rationally utilizing nano‐sized high conductive carbon dots (CDs) stabilizers. Benefiting from the exposed sites of (high utilization rate) sufficient interfaces with (extra interfacial energy storage), optimized /10CDs anode delivers a discharge capacity up 1348 mAh g −1 at current density 0.1 A exhibits superb rate/cycling capabilities. Density functional theory (DFT) calculations verify that ionic archway channels formed between CDs, eliminating bandgap greatly improving electron/ion CDs. This paper paves brand‐new way synthesis maximization extra storage.

Язык: Английский

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Electrochemical performance of polyoxometalate-based composite materials fabricated by a localization-coating strategy

Colloids and Surfaces A Physicochemical and Engineering Aspects, Год журнала: 2025, Номер 720, С. 137071 - 137071

Опубликована: Апрель 28, 2025

Язык: Английский

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Targeting Protein Aggregation: the Promising Application of Polyoxometalates in Neurodegenerative Diseases

Inorganic Chemistry Frontiers, Год журнала: 2024, Номер unknown

Опубликована: Янв. 1, 2024

Recent progress in the therapeutic applications of polyoxometalates (POMs) to target protein aggregates neurodegenerative diseases (NDDs) is reviewed.

Язык: Английский

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