Mixed-dimensional van der Waals heterostructure of Bi2S3 nanorods and SnS2 nanosheets bridged with N-doped carbon interlayer for enhanced sodium-ion batteries

Energy storage materials, Journal Year: 2024, Volume and Issue: 73, P. 103880 - 103880

Published: Nov. 1, 2024

Language: Английский

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Hybrid bimetallic cluster ZrO2/Rh@ N, S co-doped porous carbon nanosheets for efficient hydrogen evolution in acid electrolytes

Tungsten, Journal Year: 2024, Volume and Issue: 6(4), P. 657 - 662

Published: June 21, 2024

Language: Английский

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Highly Reversible Sodium‐ion Storage in A Bifunctional Nanoreactor Based on Single‐atom Mn Supported on N‐doped Carbon over MoS2 Nanosheets

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown

Published: July 9, 2024

Abstract Conversion‐type electrode materials have gained massive research attention in sodium‐ion batteries (SIBs), but their limited reversibility hampers practical use. Herein, we report a bifunctional nanoreactor to boost highly reversible storage, wherein record‐high degree of 85.65 % is achieved for MoS 2 anodes. Composed nitrogen‐doped carbon‐supported single atom Mn (NC‐SAMn), this concurrently confines active spatially and catalyzes reaction kinetics. In situ/ex situ characterizations including spectroscopy, microscopy, electrochemistry, combined with theoretical simulations containing density functional theory molecular dynamics, confirm that the NC‐SAMn nanoreactors facilitate electron/ion transfer, promote distribution interconnection discharging products (Na S/Mo), reduce Na S decomposition barrier. As result, nanoreactor‐promoted anodes exhibit ultra‐stable cycling capacity retention 99.86 after 200 cycles full cell. This work demonstrates superiority two‐dimensional confined catalytic effects, providing feasible approach improve wide range conversion‐type materials, thereby enhancing application potential long‐cycled SIBs.

Language: Английский

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Approaching Theoretical Capacity: 0D/2D Amorphous/Crystalline Bi‐Based Heterostructures Anode for Aqueous Alkaline Rechargeable Batteries

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(48)

Published: July 23, 2024

Abstract Although various bismuth (Bi) electrode materials are reported to assemble aqueous alkaline rechargeable batteries (AARBs) owing desirable potential window and high theoretical capacity, the Bi‐based still confronted with by their “death space” poor stability. Herein, a zero‐dimensional/two‐dimensional (0D/2D) amorphous/crystalline BiO x ‐Bi heterostructure is successfully synthesized one‐step reduction method for achieving nearly capacity. Under proper NaBHNaBH 4 content, Bi3 3+ reduced form ultra‐thin 2D metallic nanoflakes (Bi‐nf), incompletely amorphous 0D nanodots embedded in Bi‐nf target BiOx/Bi‐nf heterostructure. The inhibit aggregation of Bi‐nf, accelerate mass transport rate more oxygen vacancies pores at heterogeneous interface, active centers ultrathin recognized as completely accessible which benefit up Accordingly, optimized 0D/2D ‐Bi‐nf presents an admirable capacity 350 mAh g −1 1 A outstanding retention 79.9% 20 g‐1. Moreover, assembled BCNP (basic cobalt/nickel phosphate)//BiOx/Bi‐nf battery exhibits exceptional energy density 191.64 Wh kg‐1 1.28 kW power durable stability (80% after 14000 cycles).

Language: Английский

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Advanced hard carbon materials for practical applications of sodium-ion batteries developed by combined experimental, computational, and data analysis approaches

Progress in Materials Science, Journal Year: 2024, Volume and Issue: unknown, P. 101401 - 101401

Published: Oct. 1, 2024

Language: Английский

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