Boosting structural stability and air stability towards layered oxide cathodes for potassium ion batteries

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 160252 - 160252

Опубликована: Фев. 1, 2025

Язык: Английский

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In Situ Carbon Coating Induced by Molecular Intercalation for Fabricating Advanced High F‐Content KVPO₄F Cathode Toward Potassium‐Ion Batteries

International Journal of Chemical Kinetics, Год журнала: 2025, Номер unknown

Опубликована: Апрель 7, 2025

ABSTRACT Although potassium (K) vanadyl phosphate fluoride (KVPO₄F) is considered one of the most promising cathode materials for K‐ion batteries, its practical application hindered by poor electronic conductivity and fluorine (F) loss during synthesis process. In this work, a novel synthetic route designed to realize advanced KVPO₄F material (denoted as KVPO 4 F@C) adopting in situ carbon coating approach initiated isobutanol molecular intercalation, delivering two distinct characteristics high F‐containing limited particle growth. On hand, as‐generated layer enhances prevents agglomeration calcination other as‐introduced V–F–C bonds at KVPO₄F/C interface realizes F@C without large‐scale F loss. As result, retains discharge capacity 63.94 mAh g⁻¹ after 100 cycles 2C well superior rate performance. This study highlights critical role pathway enhancing electrochemical performance cathode.

Язык: Английский

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Non-flammable phosphate-ester-based electrolyte with high concentration for high safety potassium-based anode-free dual ion battery

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 162629 - 162629

Опубликована: Апрель 1, 2025

Язык: Английский

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The Development and Prospect of Stable Polyanion Compound Cathodes in LIBs and Promising Complementers

Small Methods, Год журнала: 2024, Номер unknown

Опубликована: Окт. 26, 2024

Abstract Cathode materials are usually the key to determining battery capacity, suitable cathode an important prerequisite meet needs of large‐scale energy storage systems in future. Polyanionic compounds have significant advantages metal ion storage, such as high operating voltage, excellent structural stability, safety, low cost, and environmental friendliness, can be options for rechargeable metal‐ion batteries. Although some polyanionic been commercialized, there still shortcomings electronic conductivity, reversible specific rate performance, which obviously limits development compound cathodes systems. Up now, many strategies including design, doping, surface coating, electrolyte optimization explored improve above defects. Based on contents, this paper briefly reviews research progress typical fields lithium‐ion batteries (LIBs) other promising (sodium (SIBs), potassium (PIBs), magnesium (MIBs), calcium (CIBs), zinc (ZIBs), aluminum (AIBs), etc.), aiming provide a valuable reference accelerating commercial application

Язык: Английский

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Synthesis, structure and characterizations of the first alkali-metal/alkaline-earth-metal oxalatophosphate Na4Mg3(HPO4)4(C2O4)·2H2O

Journal of Solid State Chemistry, Год журнала: 2024, Номер unknown, С. 125086 - 125086

Опубликована: Окт. 1, 2024

Язык: Английский

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