Biomass-derived carbon-sulfur hybrids boosting electrochemical kinetics to achieve high potassium storage performance

Journal of Colloid and Interface Science, Год журнала: 2024, Номер 661, С. 598 - 605

Опубликована: Фев. 1, 2024

Язык: Английский

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Trimming the Degrees of Freedom via a K+ Flux Rectifier for Safe and Long-Life Potassium-Ion Batteries

Nano-Micro Letters, Год журнала: 2023, Номер 15(1)

Опубликована: Авг. 18, 2023

High degrees of freedom (DOF) for K+ movement in the electrolytes is desirable, because resulting high ionic conductivity helps improve potassium-ion batteries, yet requiring support from highly free and flammable organic solvent molecules, seriously affecting battery safety. Here, we develop a flux rectifier to trim K ion's DOF 1 electrochemical properties. Although compromised rectifier, overall performance PIBs was improved. An oxidation stability improvement 4.0 5.9 V realized, formation dendrites dissolution cathodes were inhibited. Consequently, K||K cells continuously cycled over 3,700 h; K||Cu operated stably 800 cycles with Coulombic efficiency exceeding 99%; K||graphite exhibited high-capacity retention 74.7% after 1,500 cycles. Moreover, 3,4,9,10-perylenetetracarboxylic diimide more than 2,100 reached year-scale-cycling time. We fabricated 2.18 Ah pouch cell no significant capacity fading observed 100

Язык: Английский

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Conductive Metal–Organic Framework with Superior Redox Activity as a Stable High-Capacity Anode for High-Temperature K-Ion Batteries

Journal of the American Chemical Society, Год журнала: 2024, Номер 146(10), С. 6753 - 6762

Опубликована: Фев. 27, 2024

High-temperature rechargeable batteries are essential for energy storage in elevated-temperature situations. Due to the resource abundance of potassium, high-temperature K-ion drawing increasing research interest. However, raising working temperature would aggravate chemical and mechanical instability KIB anode, resulting very fast capacity fading, especially when high is pursued. Here, we demonstrated that a porous conductive metal–organic framework (MOF), which constructed by N-rich aromatic molecules CuO4 units via π–d conjugation, could provide multiple accessible redox-active sites promised robust structure stability efficient potassium at temperatures. Even 60 °C, this MOF anode deliver initial (455 mAh g–1), impressive rate, extraordinary cyclability (96.7% retention 1600 cycles), much better than those reported anodes. The mechanistic study revealed C═N groups contributed abundant sites; synergistic effect conjugated character reticular architecture facilitated K+/e– transport ensured an insoluble electrode with small volume deformation, thus achieving stable high-capacity storage.

Язык: Английский

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Functionalization design of zinc anode for advanced aqueous zinc‐ion batteries

SusMat, Год журнала: 2024, Номер 4(2)

Опубликована: Фев. 14, 2024

Abstract Rechargeable aqueous zinc‐ion batteries (AZIBs) offer high energy density, low cost, and are environmentally friendly, rendering them potential storage devices. However, dendrite growth on the zinc anode numerous side reactions during operation challenge their commercialization. Recent advancements have introduced various materials for functionalization of anodes. These developments effectively mitigate performance degradation anode, enhancing both its cycle stability overall AZIBs. Herein, construction functionalized anodes is discussed, current (including organic, inorganic composites) modified categorized, protective mechanism behind analyzed. The study concludes by outlining characteristics suitable dendritic‐free prospects future development directions in

Язык: Английский

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Breaking Low-Strain and Deep-Potassiation Trade-Off in Alloy Anodes via Bonding Modulation for High-Performance K-Ion Batteries

Journal of the American Chemical Society, Год журнала: 2024, Номер 146(7), С. 4752 - 4761

Опубликована: Фев. 9, 2024

Alloy anode materials have garnered unprecedented attention for potassium storage due to their high theoretical capacity. However, the substantial structural strain associated with deep potassiation results in serious electrode fragmentation and inadequate K-alloying reactions. Effectively reconciling trade-off between low-strain deep-potassiation alloy anodes poses a considerable challenge larger size of K-ions compared Li/Na-ions. In this study, we propose chemical bonding modulation strategy through single-atom modification address volume expansion during potassiation. Using black phosphorus (BP) as representative generalizing other anodes, established robust P–S covalent network via sulfur doping. This exhibits sustained stability across discharge–charge cycles, elevating modulus K–P compounds by 74%, effectively withstanding induced process. Additionally, reduces formation energies phosphides, facilitating deeper BP anode. As result, modified reversible capacity extended operational lifespan, coupled areal work introduces new perspective on overcoming development high-energy stable potassium-ion batteries.

Язык: Английский

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Research progresses on metal‐organic frameworks for sodium/potassium‐ion batteries

Battery energy, Год журнала: 2024, Номер 3(4)

Опубликована: Март 2, 2024

Abstract Metal‐organic frameworks (MOFs), as a new type of functional material, have received much attention in recent years. High ionic conductivity, large specific surface area, controllable pore structure and geometry make it possible to be used electrode materials. Meanwhile, different types MOF derivatives can prepared by adjusting the metal central element, which provides options for finding materials high‐performance batteries. This paper reviews research progress pristine MOFs sodium/potassium‐ion In addition, this describes working principle, advantages, challenges batteries, strategies improve electrochemical performance, well future prospects directions.

Язык: Английский

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Efficient Polytelluride Anchoring for Ultralong-Life Potassium Storage: Combined Physical Barrier and Chemisorption in Nanogrid-in-Nanofiber

Nano-Micro Letters, Год журнала: 2024, Номер 16(1)

Опубликована: Янв. 8, 2024

Metal tellurides (MTes) are highly attractive as promising anodes for high-performance potassium-ion batteries. The capacity attenuation of most reported MTe is attributed to their poor electrical conductivity and large volume variation. evolution mechanisms, dissolution properties, corresponding manipulation strategies intermediates (K-polytellurides, K-pTe

Язык: Английский

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Preparation of low-cost pitch-derived carbon-sulfur hybrids as anodes for potassium storage

Carbon, Год журнала: 2025, Номер unknown, С. 120033 - 120033

Опубликована: Янв. 1, 2025

Язык: Английский

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N/F/S co-doped 3D interconnected carbon nanosheets with well-developed pores and interlayer spacing for high-performance potassium ion batteries

Journal of Material Science and Technology, Год журнала: 2025, Номер unknown

Опубликована: Фев. 1, 2025

Язык: Английский

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Chemical and spatial dual-confinement engineering for stable Na-S batteries with approximately 100% capacity retention

Proceedings of the National Academy of Sciences, Год журнала: 2023, Номер 120(48)

Опубликована: Ноя. 20, 2023

Sodium-sulfur (Na-S) batteries are attracting intensive attention due to the merits like high energy and low cost, while poor stability of sulfur cathode limits further development. Here, we report a chemical spatial dual-confinement approach improve Na-S batteries. It refers covalently bond carbon at forms C-S/N-C=S bonds with strength for locking sulfur. Meanwhile, is examined be S 1 -S 2 small species produced by thermally cutting 8 large molecules followed sealing in confined pores materials. Hence, achieves good maintaining high-capacity retention 97.64% after 1000 cycles. Experimental theoretical results show that Na + hosted via coordination structure (N···Na···S) without breaking C-S bond, thus impeding formation dissolution sodium polysulfide ensure cycling stability. This work provides promising method addressing S-triggered problem other S-based

Язык: Английский

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