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

Chemical Society Reviews, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 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.

Language: Английский

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Comprehensive Insights into Aqueous Potassium‐Ion Batteries

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 9, 2024

Abstract Aqueous potassium‐ion batteries (AKIBs) with mild aqueous electrolytes can significantly mitigate the safety and environmental issues raised from traditional nonaqueous batteries, positioning them as promising candidates for grid‐scale applications. Nonetheless, progression of AKIBs is currently impeded by insufficient energy density, largely attributed to limited voltage window electrolytes. This review aims introduce foundational knowledge about illustrates recent advancements in AKIBs, offers valuable perspectives on designing electrode materials optimizing To provide a systematic overview, focus following seven key sections: i) development history, ii) materials, iii) electrolyte design, iv) current collectors, v) interphase chemistry, vi) full cell configurations, vii) future prospects. Finally, constructive insights suggestions are provided higher density.

Language: Английский

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Revisiting Intercalation Anode Materials for Potassium-Ion Batteries

Materials, Journal Year: 2025, Volume and Issue: 18(1), P. 190 - 190

Published: Jan. 4, 2025

Potassium-ion batteries (KIBs) have attracted significant attention in recent years as a result of the urgent necessity to develop sustainable, low-cost based on non-critical raw materials that are competitive with market-available lithium-ion batteries. KIBs excellent candidates, they offer possibility providing high power and energy densities due their faster K+ diffusion very close reduction potential compared Li+/Li. However, research is still its infancy, hence, more investigation required both at level device level. In this work, we focus strategies enhance electrochemical properties intercalation anode materials, i.e., carbon-, titanium-, vanadium-based compounds. Hitherto, most promising those carbon-based, such graphite, soft, or hard carbon, each advantages disadvantages. Although wide variety been reported results, there need improve standardization best carbon properties, electrode formulation, electrolyte composition, given impossibility direct comparison. Therefore, additional effort should be made understand what crucial parameters reference formulation further boost performance move step forward commercialization KIBs.

Language: Английский

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Enable Rechargeable Carbon Fluoride Batteries with Unprecedented High Rate and Long Life by Oxygen Doping and Electrolyte Formulation

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(47)

Published: Oct. 7, 2024

Abstract Here, a rechargeable carbon fluoride battery is demonstrated with unprecedented high rate and long life by oxygen doping electrolyte formulation. The introductions of Mn 2+ –O catalyst porous structure during the oxidation process CF x cathode can promote splitting Li–F charging. By further modulating triphenylantimony chloride (TSbCl) as anion acceptor CsF product modulator, more readily dissociable CsLiF 2 instead LiF preferentially formed, TSbCl‐salt protection interface constructed to confine based products reduce loss at side. These effects endow Li‐CF batteries durable reversible conversion reaction (for least 600 cycles), ultrahigh performance (e.g., 364 mAh g −1 20 A ) low charging plateau voltage down 3.2 V. exhibits maximum power density 38342 W kg energy 1012 Wh . Furthermore, this system demonstrates promising prospects for applications in view its temperature operation 280 −20 °C), self‐discharge ability, large‐scale pouch cell fabrication loading (5–6 mg cm −2 ), enabling it move beyond previous role primary into new fast‐charging density.

Language: Английский

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Role of Mesoporosity in Hard Carbon Anodes for High‐Energy and Stable Potassium‐Ion Storage

Small, Journal Year: 2025, Volume and Issue: 21(9)

Published: Jan. 8, 2025

Abstract Herein, NaCl‐templated mesoporous hard carbons (NMCs) have been designed and engineered with tunable surface properties as anode materials for potassium‐ion batteries (KIBs) hybrid capacitors (KICs). By utilizing “water‐in‐oil” emulsions, the size of NaCl templates is precisely modified, leading to smaller particles that enable formation primary carbon structures reduced particle secondary 3D interconnected mesoporosity. These features significantly enhance electrode density, reduce particle‐to‐particle resistance, improve electrolyte wettability. The resulting NMC delivers high gravimetric volumetric capacities 323.5 mAh g −1 142.3 cm −3 , respectively, outstanding cycling stability, retaining 292.7 after 620 cycles. Full‐cell evaluations demonstrate potential NMC‐based anodes paired KIB (Prussian blue cathode) KIC (activated carbon‐cathode), achieving a capacity 109.4 capacitance 254.6 F respectively. As KIB, cell average voltage 3.4 V, in specific energy 256 Wh kg while reaches 141.4 power 58.6 kW . results underscore importance morphological porosity enhancing electrochemical performance materials, providing insights future storage solutions.

Language: Английский

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Unleashing the Underestimated Rate Capability of Graphite Anode for Potassium‐Ion Batteries by Sn(OTf)₂ Electrolyte Additive

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

Published: Jan. 10, 2025

Abstract Graphite stands out as the most promising anode material for potassium‐ion batteries (PIBs) due to its cost‐effectiveness and ideal low‐potential platform. However, perceived poor rate capability of graphite has become a key concern commercial application in PIBs. Herein, above understanding on is updated. Without modifying structure, by simply introducing tin trifluoromethanesulfonate (Sn(OTf) 2 ) additive phosphate‐based electrolyte, K||graphite half‐cell can deliver capacity 240 mAh g −1 at high C (1 = 279 mA operates 1000 cycles with negligible degradation. Moreover, an unprecedented ≈200 4 achieved three‐electrode K|K ref|graphite cell configuration where interference K metal counter electrode eliminated. Unlike structure modification strategies, such remarkable performance originated from low‐impedance inorganic‐rich KF/SnF hybrid interphase graphite. Thus, effectiveness electrolyte regulation strategy highlights underestimated anode. This renewed insight dispels regarding applicability enriches advantages PIBs high‐power density.

Language: Английский

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Enhancing Organic Cathodes of Aqueous Zinc-Ion Batteries via Nitro Group Modification

Chemical Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Nitro groups' high redox activity and electron-withdrawing capabilities increased the specific capacity voltage plateaus. Additionally, in situ produced azo bridges conjugation of PTO hence improved cycle stability.

Language: Английский

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Decomposition of Binary Mixtures of DMC/EC, EMC/EC, and DEC/EC on Potassium Surfaces; GC, XPS, and Calculation

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: 17(6), P. 10055 - 10072

Published: Jan. 31, 2025

Potassium-ion batteries (KIBs) have emerged as promising candidates for low-cost, high-energy storage systems, driven by their fast ionic conductivity and high operating voltage. To develop advanced KIBs, the performance is usually evaluated in half-cell tests using highly reactive potassium metal, which often leads to misinterpretation of results due degradation processes between metal anode electrolyte components. Here, we systematically investigated surface reactivity contact with commonly used solvent combinations, namely, mixtures ethylene carbonate linear bis(alkyl)carbonates. Mass spectrometry analysis identified main species, di- trifunctionalized carbonates, ether-bridged ether-like compounds. Possible reaction pathways formation these products were density functional theory calculations (DFT). X-ray photoelectron spectroscopy showed that favors electrode leading an inorganic rich solid interphase composed K2CO3, KOH, R-OK species. Additionally, able show how itself forms initial layer containing KOH K2CO3. This study highlights complexity KIB measurements clearly reveals challenges interpreting tests.

Language: Английский

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Copper-tin catalyzed methane pyrolysis and solid carbon products as anode materials for sodium-ion batteries

International Journal of Green Energy, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 13

Published: March 6, 2025

Language: Английский

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Bulky steric hindrance effect-mediated weakly solvating electrolytes for highly reversible potassium-metal batteries

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 161933 - 161933

Published: March 1, 2025

Language: Английский

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