eScience, Journal Year: 2024, Volume and Issue: unknown, P. 100351 - 100351
Published: Dec. 1, 2024
Language: Английский
Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(49)
Published: Oct. 17, 2023
Ether-based electrolytes are promising for secondary batteries due to their good compatibility with alkali metal anodes and high ionic conductivity. However, they suffer from poor oxidative stability toxicity, leading severe electrolyte decomposition at voltage biosafety/environmental concerns when leakage occurs. Here, we report a green ether solvent through rational design of carbon-chain regulation elicit steric hindrance, such structure significantly reducing the solvent's biotoxicity tuning solvation electrolytes. Notably, our is versatile, an anion-dominated favored, facilitating stable interphase formation on both anode cathode in potassium-ion batteries. Remarkably, ether-based demonstrates excellent K graphite 4.2 V high-voltage (200 cycles average Coulombic efficiency 99.64 %). This work points path toward molecular practical other rechargeable
Language: Английский
Citations
85
Energy Materials and Devices, Journal Year: 2023, Volume and Issue: 1(1), P. 9370004 - 9370004
Published: Sept. 1, 2023
The composite solid-state electrolytes are gathering significant attention for combining both the advantages of inorganic and polymer electrolytes. However, after years' research, conventional ceramic fillers offer limited ion conductivity enhancement in due to space charge layer that exists between matrix phase. In this study, we develop a ferroelectric ion-conductor (LiTaO3) as functional filler alleviate provide extra Li+ transport pathway tandemly. obtained electrolyte comprising LiTaO3 poly(vinylidene difluoride) (P-LTO15) achieves an ionic 4.90 ×10−4 S cm−1 transference number 0.45. It is proved polarized creates uniform electric field promotes homogenous Li plating/stripping which renders symmetrical batteries ultra-stable cycle life 4000 h at 0.1 mA cm−2 low polarization over-potential (~50 mV). Furthermore, NCM811/P-LTO15/Li full achieve ultra-long cycling performance (1400 cycles) 1 C high discharge capacity 102.1 mAh g−1 5 C. This work sheds light on design effectively enhance battery performance.
Language: Английский
Citations
44
Advanced Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 5, 2025
Rechargeable batteries employing Li metal anodes have gained increasing attention due to their high energy density. Nevertheless, low stability and reversibility of severely impeded practical applications. Designing current collectors (CCs) with reasonable structure composition is an efficient approach stabilizing the anodes. However, in-depth comprehensive understanding about design principles modification strategies CCs for realizing stable still lacking. Herein, a critical review focusing on rational summarized. First, requirements in are elucidated clarify objectives CCs. Then, including lithiophilic site modification, 3D architecture construction, protective layer crystalline plane engineering, as well corresponding highlighted. On this basis, recent progress development discussed. Finally, future directions suggested focus developing operando monitoring technology, designing cells under conditions close commercial This will spur more insightful researches toward advanced CCs, promote commercialization.
Language: Английский
Citations
3
Energy storage materials, Journal Year: 2025, Volume and Issue: unknown, P. 104066 - 104066
Published: Jan. 1, 2025
Language: Английский
Citations
2
Nano-Micro Letters, Journal Year: 2025, Volume and Issue: 17(1)
Published: Feb. 17, 2025
Abstract Electrolytes are crucial components in electrochemical energy storage devices, sparking considerable research interest. However, the significance of anions electrolytes is often underestimated. In fact, have significant impacts on performance and stability lithium batteries. Therefore, comprehensively understanding anion chemistry importance. Herein, in-depth comprehension its positive effects interface, solvation structure Li-ions, as well batteries been emphasized summarized. This review aims to present a full scope furnish systematic cognition for rational design advanced better with high density, lifespan, safety. Furthermore, insightful analysis perspectives based current proposed. We hope that this sheds light new electrolytes.
Language: Английский
Citations
2
Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(39)
Published: Sept. 3, 2023
Abstract Non‐passivating and chlorine‐free electrolytes are crucial for making rechargeable magnesium batteries practically feasible. Rational design of a brand‐new electrolyte should balance both Mg salt solvent considering that the interfacial reactions occurring at electrolyte/electrode interface involve with ion solvation structure. Herein, nitrogenous 2‐methoxyethylamine (MOEA) is employed as co‐solvent to regulate coordination behavior cations/anions in Mg(CF 3 SO ) 2 ‐G2 after series screenings, which enables significantly ameliorated physiochemical properties. In‐depth insight on mechanism MOEA participating structure formation deduced via density functional theory calculations molecular dynamics simulations. The decompositions MOEA‐tailored cationic/anionic complexes shield anode Mo 6 S 8 cathode N C x y ‐rich layers, respectively, enable suppress side reaction accelerate 2+ transportation competing desolvation layer. All merits endow remarkable performances symmetric/asymmetric cells ultralong‐cycle lives over 5000 h average Coulombic efficiency 98.3% 8200 cycles (≈11 months), respectively. Additionally, cheerful discharge capacity ≈59.3 mAh g −1 obtained 1000 0.5 ||Mg full cell.
Language: Английский
Citations
40
Energy & Environmental Science, Journal Year: 2023, Volume and Issue: 17(1), P. 227 - 237
Published: Nov. 14, 2023
Correlations between the temperature-responsive solvation structure, interfacial chemistry and performance of graphite anodes are revealed to understand structure–property relationships, providing insights into designing temperature-adaptative batteries.
Language: Английский
Citations
40
eScience, Journal Year: 2024, Volume and Issue: 4(6), P. 100268 - 100268
Published: April 7, 2024
The conventional perspective suggests that low-concentration electrolytes (LCEs) face challenges in achieving stable charge/discharge properties due to the decreased ionic conductivity resulting from lower Li+ concentrations. However, successful utilization of LCEs lithium/sodium-ion batteries has brought them into forefront consideration for high performance battery systems. It is possible achieve improved interface stability and ion transport through adjusting electrolyte components, such as salts, solvents, additives. This review provides timely update recent research progress, design strategies remaining answer several questions: i) What key factor designing LCEs? ii) How balance low salt concentration good conductivity? iii) interphasial mechanism anode/cathode Firstly, development discussed with typical examples. Subsequently, effectiveness solvents on overall performances comprehensively summarized detail. Finally, direction are discussed. critical guidance novel secondary batteries.
Language: Английский
Citations
12
Advanced Energy Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Sept. 17, 2024
Abstract The lithium–sulfur (Li–S) battery system has attracted considerable attention due to its ultrahigh theoretical energy density and promising applications. However, with the increasing demands on S loading electrolyte content, practical Li–S batteries still face several serious challenges, such as slow reaction kinetics at cathode interface, unstable anode interface reactions, undesirable crosstalk effects between anode. Traditional systems often struggle address these challenges under conditions, thereby rendering it imperative establish a new for batteries. This review first discusses necessity of establishing propose specific parameter requirements, electrolyte‐to‐sulfur mass ratio (E m /S). Subsequently, some modification strategies proposed by researchers are summarized different associated Finally, combination is reviewed, aiming reveal more effective design approaches that simultaneously multiple while providing guidance balanced article promotes development electrolytes can act reference other secondary
Language: Английский
Citations
12
Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(30)
Published: May 2, 2024
Abstract Electrolytes with anion‐dominated solvation are promising candidates to achieve dendrite‐free and high‐voltage potassium metal batteries. However, it's challenging form anion‐reinforced solvates at low salt concentrations. Herein, we construct an structure a moderate concentration of 1.5 M weakly coordinated cosolvent ethylene glycol dibutyl ether. The unique accelerates the desolvation K + , strengthens oxidative stability 4.94 V facilitates formation inorganic‐rich stable electrode‐electrolyte interface. These enable plating/stripping anode over 2200 h, high capacity retention 83.0 % after 150 cycles cut‐off voltage 4.5 in 0.67 MnO 2 //K cells, even 91.5 30 under 4.7 V. This work provides insight into opens new avenues for designing ether‐based electrolytes.
Language: Английский
Citations
10