Carbon, Journal Year: 2024, Volume and Issue: unknown, P. 119868 - 119868
Published: Nov. 1, 2024
Language: Английский
National Science Review, Journal Year: 2024, Volume and Issue: 11(11)
Published: Oct. 15, 2024
ABSTRACT The poor oxidation resistance of traditional electrolytes has hampered the development high-voltage potassium-ion battery technology. Here, we present a cosolvent electrolyte design strategy to overcome limitations chemistries. breaks dissolution limitation salt through ion–dipole interactions, significantly enlarging anion-rich solvation clusters, as verified by insitu synchrotron-based wide-angle X-ray scattering experiments. Furthermore, large clusters also facilitate formation an effective electrode–electrolyte interphase, thereby enhancing compatibility with electrodes. enables K||Prussian blue cells (2–4.5 V) operate for >700 cycles capacity retention 91.9%. Our paves new avenues batteries and beyond.
Language: Английский
Citations
32
Nano Letters, Journal Year: 2024, Volume and Issue: 24(37), P. 11419 - 11428
Published: Sept. 3, 2024
Low-concentration ether electrolytes cannot efficiently achieve oxidation resistance and excellent interface behavior, resulting in severe electrolyte decomposition at a high voltage ineffective electrode-electrolyte interphase. Herein, we utilize sandwich structure-like gel polymer (GPE) to enhance the stability of potassium-ion batteries (PIBs). The GPE contact layer facilitates stable interphase formation, transport maintains good ionic transport, which enabled exhibit wide electrochemical window performance. In addition, Al corrosion under is suppressed through restriction solvent molecules. Consequently, when using designed (based on 1 m), K||graphite cell exhibits cycling 450 cycles with capacity retention 91%, K||FeFe-Prussian blue (2-4.2 V) delivers average Coulombic efficiency 99.9% over 2200 100 mA g
Language: Английский
Citations
24
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Aug. 12, 2024
Abstract Sodium‐ion batteries (SIBs) with abundant elements have garnered significant attention from researches as a promise compensation to lithium‐ion (LIBs). However, the large‐scale commercial application of SIBs is partially hindered by limited initial coulombic efficiency (ICE) due irreversible formation solid electrolyte interphase (SEI) and intercalation into defects in anode. Similar pre‐lithiation techniques, pre‐sodiation approaches are considered be one most direct effective way compensate for loss active sodium at anode side during cycle. In this context, additional ions pre‐injected cathode/anode material chemical/electrochemical methods, aiming improve battery span life energy density. This review delves necessity impact compiling latest research progress, instance, self‐sacrificing cathode additives, over‐sodiated materials, contact solution chemical pre‐sodiation. Notably, mechanisms underlying highlighted. comprehensive overview aims foster deeper understanding techniques expects provide guidance realizing high density sodium‐ion batteries.
Language: Английский
Citations
15
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
Citations
13
Chemical Science, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 1, 2025
Silicon (Si) is considered a promising anode material for next-generation lithium-ion batteries due to its high theoretical specific capacity and earth-abundancy. However, challenges such as significant volume expansion, unstable solid electrolyte interphase (SEI) formation in incompatible electrolytes, slow transport lead poor cycling rate performance. In this work, it demonstrated that superior cyclability capability of Si anodes can be achieved using ethyl fluoroacetate (EFA) fluoroethylene carbonate (FEC) solvents with low binding energy Li+ but sufficiently relative dielectric constants. By weakening the interaction between solvent, barrier desolvation process lowered, while ensuring conductivity diffusion Li+. As result, silicon-carbon optimized exhibits excellent performance, work reversibly 1709.1 mAh g-1 proceeds over 250 cycles retains 85.2% at 0.2C. Furthermore, Si/C‖LiFePO4 (LFP) full cell shows an extended service life more than 500 cycles. This offers valuable insights into design weakly solvating electrolytes high-performance Si-based batteries.
Language: Английский
Citations
1
Angewandte Chemie, Journal Year: 2024, Volume and Issue: 136(45)
Published: Aug. 7, 2024
Abstract Sub‐nanoclusters with ultra‐small particle sizes are particularly significant to create advanced energy storage materials. Herein, Sn sub‐nanoclusters encapsulated in nitrogen‐doped multichannel carbon matrix (denoted as Sn‐SCs@MCNF) designed by a facile and controllable route flexible anode for high‐performance potassium ion batteries (PIBs). The uniformly dispersed can be precisely identified, which ensure us clarify the size influence on electrochemical performance. sub‐nanoscale effect of Sn‐SCs@MCNF restrains electrode pulverization enhances K + diffusion kinetics, leading superior cycling stability rate As freestanding PIBs, manifests properties, such exceptional ( around 331 mAh g −1 after 150 cycles at 100 mA ) capability. Especially, Sn‐SCs@MCNF||KFe[Fe(CN) 6 ] full cell demonstrates impressive reversible capacity 167 0.4 A even 200 cycles. Theoretical calculations that ultrafine beneficial electron transfer contribute lower barriers intermediates, thereby resulting promising Comprehensive investigation intrinsic process is revealed situ analysis. This work provides vital guidance design functional materials energy‐storage devices.
Language: Английский
Citations
5
Advanced Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 22, 2025
Abstract Potassium‐ion batteries (PIBs), with abundant resources and low cost, are considered as a promising alternative to commercial lithium‐ion for low‐cost large‐scale applications. Over the past decade, significant academic progresses made in development of PIBs, including advancements cathodes, anodes, electrolytes. However, most improvements achieved under laboratory conditions (e.g., K metal‐based half‐cells mass loading active materials), performance PIBs full cells is still far from requirements A critical insight bridging research commercialization urgently needed guide future this field. This review will discuss challenges improvement strategies focusing on potential practical electrolytes, well their cells. It aims give readers clear logical understanding PIBs. The application analysis also discussed provide comprehensive Finally, perspectives provided
Language: Английский
Citations
0
Small, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 18, 2025
Abstract Potassium‐ion batteries (KIBs) have emerged as a promising alternative to lithium‐ion due the abundance and low cost of potassium resources. Coupled with commercial graphite anode, KIBs great potential for next‐generation large‐scale electrochemical energy storage devices. However, anode in suffers from rapid capacity decay “potassium hexafluorophosphate (KPF 6 ) + ethylene carbonate (EC)” electrolytes. These issues can be addressed through electrolyte engineering, which has been proven effective improving performance. This review explores underlying mechanisms K graphite, challenges design, recent advancements engineering optimization KIBs.
Language: Английский
Citations
0
Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 25, 2025
Abstract The manganese Prussian blue analogs (Mn‐PBAs) are regarded as scalable, low‐cost, and high‐energy cathodes for sodium‐ions batteries (SIBs). Unfortunately, Mn‐PBAs suffer from severe dissolution, particularly of (Mn), which has been shown will exacerbate the structural collapse cathode materials electrolyte decomposition, significantly reducing cycling stability Mn‐PBAs‐based batteries. Herein, an innovative dissolution inhibition strategy is proposed by utilizing solvents that inherently exhibit lower solubility electrolyte. This approach successfully establishes a dissolution‐diffusion interface, thereby kinetically preventing addressing associated issues. interaction energy between electrolyte, along with analyses mean square displacement van Hove function curves, theoretically validates successful construction this interface. In new can provide specific capacity ≈154 mAh g −1 (≈510 Wh kg ) be cycled at current density 2 C >1000 cycles, demonstrating excellent electrochemical performance in pioneering work forge avenues stabilizing holds substantial promise practical applications.
Language: Английский
Citations
0
The Journal of Chemical Physics, Journal Year: 2025, Volume and Issue: 162(12)
Published: March 28, 2025
Sodium-ion hybrid capacitors have garnered significant attention due to their high power and energy densities, as well the abundance of sodium reserves. However, mismatch between anode cathode dynamics is biggest barrier improving performance. To address this issue, we propose a strategy for preparation porous MXene by hydrogen peroxide (H2O2)-controlled etching solve capacity degradation ion diffusion limitation, which are caused van der Waals forces nanosheets. This approach facilitates realization three-dimensional channels with both vertical horizontal pathways, significantly enhancing availability active sites rate. By adjusting amount oxidant, (P-MXene-2) an optimal pore size range was obtained. The assembled half-cell has 180 mAh g−1 at rate 0.05 A g−1. Furthermore, combining carbon electrolyte screening, SIHC density 110.6 Wh kg−1 1000 W 71.1 20 kW successfully constructed. study provides useful insights into design electrodes storage applications.
Language: Английский
Citations
0