Recent advances in potassium metal batteries: electrodes, interfaces and electrolytes

Chemical Society Reviews, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

This review explores the latest advancements in potassium metal batteries, including electrode design, interface engineering, and electrolyte optimization to suppress dendrite formation enhance cycling stability.

Язык: Английский

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Regulation of Configurational Entropy to Realize Long Cycle Lifespan of High Entropy Alloy Anodes for Potassium Batteries

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 7, 2025

Abstract High entropy alloys (HEAs) with entropy‐driven stabilization are attractive in potassium‐ion batteries (PIBs); however, they suffer from phase segregation due to the disparity of versatile components. Confining multifarious metals into same lattice using ligands full‐coordination abilities allows for delicate control at nanoscale level and thus decreases atom diffusion. This chemical synthesis can suppress realize HEAs PIB anodes. Herein, a new MnCoNiCuZn‐based HEA nanoparticle encapsulated within nitrogen‐doped carbon (HEA‐NPs@NC) is fabricated The flexible chlorhexidine selected its long chain, large steric bulkiness, abundant neutral tetradentate donors, coordination ability. high effect “cocktail” HEA‐NPs@NC allow tailoring electrochemical functionalities, including multiple K + transport paths, good conductivity, stability. anode achieves lifespan over 3000 cycles, impressive capacity (513 mAh g −1 ), high‐rate performance (202 5 A ). ex situ characterizations density functional theory calculations elucidated acts as an “atomic composite” forms interstitial metallic solid solutions interaction constituent elements.

Язык: Английский

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High-Entropy and Na-Rich-Designed High-Energy-Density Na₃V₂(PO₄)₃/C Cathode

ACS Nano, Год журнала: 2024, Номер 18(52), С. 35632 - 35643

Опубликована: Дек. 19, 2024

The Na3V2(PO4)3 (NVP) cathode holds the merit of a stable 3D NASICON structure for ultrafast Na+ diffusion, yet it is still confronted with poor electronic conductivity (10–9 S cm–1) and insufficient energy density (∼370 W h kg–1). Herein, series high-entropy-doped Na3+xV1.76–xZnx(GaCrAlIn)0.06(PO4)3 (x = 0, 0.2, 0.35, 0.5) cathodes are systematically prepared an activated V5+⇌V4+ high-voltage plateau (4.0 V) elevated discharge capacity, which derived from charge compensation divalent Zn substituting trivalent V accompanied by extra input to create Na-rich phase. A range in situ/ex situ characterization studies DFT calculations radically verify conservation mechanism, enhanced bulk conductivity, robust structural stability. Accordingly, half-cells, optimized 0.35) capable giving much-improved capacity (126.8 mA g–1), reliable cycling stability (97.4%@5000 cycles@40 C), competitive (426.1 kg–1) at 2.0–4.3 V. Upon reducing cutoff voltage 1.4 V, three-electron reaction (V5+⇌V2+) entirely superior stability, delivering unparalleled 193.4 g–1 higher (544.3 Besides, displays high (126.1 g–1) (417.2 NVPZGCAI-35//hard carbon full-cells 1.6–4.1 Hence, this pioneering high-entropy strategy above rubies developing high-energy-density high-stability sodium-ion batteries.

Язык: Английский

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Engineering potassium-ion battery anodes with ultra-high structural stability and their potassium storage mechanism

Chemical Engineering Journal, Год журнала: 2025, Номер 505, С. 159921 - 159921

Опубликована: Янв. 25, 2025

Язык: Английский

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Construction of Heterostructure Nickel Sulfoselenide Arrays for Advanced Potassium‐Ion Hybrid Capacitors

Small, Год журнала: 2025, Номер unknown

Опубликована: Март 10, 2025

Abstract Transition metal compounds are being extensive studied in K‐ion hybrids capacitors (KIHCs) owing to their abundant resource and ultrahigh theoretical capacity. However, poor cycling lifespan rate capability as vulnerable structures is the major bottleneck for future development. Here design construction a heterostructure Nickel sulfoselenide arrays (NiSSe) with large‐scale high ordering large interval spacing reported. Benefiting from synergistic effect of inner Cu nanoarray superior conductivity outer NiSSe layer massive active sites, exhibits storage reversible potassium ion (585 mAh g −1 at 0.2 A ) excellent cycle stability. As expected, KIHCs assembled anode N/O co‐doped carbon nanowire array (NOC) cathode deliver high‐energy density power (156.2 Wh kg 20 kW well lifespan. The first‐principle calculations reveal that have ionic/electronic characteristics low diffusion barriers K + ‐intercalation. This core–shell strategy may open up novel avenue transition application electrochemical storage, conversion, beyond.

Язык: Английский

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High-entropy alloy FeNiCuMnSbBi nanofibers as anode for high-performance potassium-ion capacitors

Journal of Alloys and Compounds, Год журнала: 2025, Номер unknown, С. 180190 - 180190

Опубликована: Апрель 1, 2025

Язык: Английский

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Rashba effect-enhanced spin–orbit coupling in Mn1-xSnxSb2Se4 for optimized ionic and electronic kinetics for superior K+ storage

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 164340 - 164340

Опубликована: Май 1, 2025

Язык: Английский

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Synthesis of high-entropy perovskite metal fluoride anode materials for lithium-ion batteries via a one-pot solution method

Journal of Alloys and Compounds, Год журнала: 2024, Номер 1010, С. 177458 - 177458

Опубликована: Ноя. 7, 2024

Язык: Английский

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