Promoting Robust and Rapid Na‐Ion Storage of Molybdenum‐Based Sulfide via Rational Hetero and Hollow Structure Design

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 3, 2025

Abstract Molybdenum disulfide (MoS 2 ), characterized by its two‐dimensional structure and high theoretical specific capacity, is considered a prospective anode of Na‐ion battery. However, the cycling rate capabilities are hampered sluggish charge transfer kinetics poor structural stability. To overcome issues, most efforts have been focused on optimizing MoS . Nevertheless, rationally designing that can present rapid durable storage while ensuring large remains challenges. Herein, /MnS heterostructure featuring sphere‐like hollow morphology designed according to Ostwald ripening process Kirkendall effect. This construction effectively establish an interfacial built‐in electric field activated MnS , which exhibit P‐type N‐type semiconductor characteristics, respectively, thereby promoting electrochemical kinetics. Moreover, excellent stability after repeated (de)sodiation processes remarkably achieved thanks robust design, significantly achieving outstanding tolerance changes. Consequently, delivers capacity (594.8 mAh g −1 at 0.1 A superior performance (up 100 ultrastable capability (30 000 cycles with ≈81.4% retention). The work affords effective optimization tactic develop high‐performance conversion‐type electrodes for alkali‐ion batteries.

Language: Английский

Controlling the Morphology and Electrochemical Properties of Electrodeposited Nickel Hexacyanoferrate

ChemElectroChem, Journal Year: 2025, Volume and Issue: unknown

Published: April 14, 2025

In recent years, Prussian blue analogs (PBAs) have gained significant attention due to their broad applicability. The synthesis routines of this material class been shown allow for great tunability by varying the corresponding parameters. control crystal phase, defect, and water content, as well electrochemical properties, studied extensively state‐of‐the‐art coprecipitation method. turn, deposition, which is particularly suited thin‐film production, remains mainly underexplored. This study investigates effects temperature, scan rate, precursor concentration, supporting electrolyte pH on nickel hexacyanoferrate (NiHCF) films electrodeposited onto a high surface area carbon‐based substrate via cyclic voltammetry. Electrochemical analysis morphological characterization reveal that higher deposition temperatures increase cation‐specific capacity, influence NiHCF coverage, promote larger, more crystalline structures. Scan variations further demonstrate correlation between parameters, crystallite size, structure. These findings highlight PBAs tailored performance morphology.

Language: Английский

Inhibiting interfacial side reactions via constructing a hydrophilic separator toward durable and fast Zn storage

Energy storage materials, Journal Year: 2025, Volume and Issue: 78, P. 104292 - 104292

Published: May 1, 2025

Language: Английский