Science Bulletin, Journal Year: 2025, Volume and Issue: unknown
Published: April 1, 2025
Language: Английский
ACS Energy Letters, Journal Year: 2024, Volume and Issue: 9(4), P. 1604 - 1616
Published: March 19, 2024
The development of nonflammable electrolytes can boost energy density and battery safety, especially for layered metal oxide cathodes operating at high voltage. However, most are designed in a concentration compatibility with graphite electrodes and/or less decomposition. Herein, we introduced solvation structure-mediated model to develop electrolyte based on trimethyl phosphate (TMP) solvent normal concentration. This advancement allows the || lithium cobalt full cell operate 4.5 V, delivering also exhibiting feature. achievement is realized using previously unreported components, including carbonate solvent, ethylene sulfate (DTD) additives, conventional LiPF6 salt. We analyzed molecular behaviors each composition uncovered impact DTD, highlighting its prerequisite conditions effectively weakening Li+-TMP interactions. bottom-up design strategy offers fresh perspective regulating structures formulations.
Language: Английский
Citations
60
Journal of Power Sources, Journal Year: 2024, Volume and Issue: 603, P. 234445 - 234445
Published: March 29, 2024
Language: Английский
Citations
54
Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(33)
Published: May 29, 2024
Abstract Dual‐ion batteries (DIBs) present great application potential in low‐temperature energy storage scenarios due to their unique dual‐ion working mechanism. However, at low temperatures, the insufficient electrochemical oxidation stability of electrolytes and depressed interfacial compatibility impair DIB performance. Here, we design a variant‐localized high‐concentration solvation structure for universal ( ν ‐LHCE) without phase separation via introducing an extremely weak‐solvating solvent with levels. The gives ‐LHCE enhanced stability. Meanwhile, can competitively participate Li + ‐solvated coordination, which improves transfer kinetics boosts formation robust interphases. Thus, electrolyte not only has good high‐voltage >5.5 V proper transference number 0.51 but also shows high ionic conductivities 1 mS/cm temperatures. Consequently, enables different types achieve excellent long‐term cycling rate capability both room Especially, capacity retentions are 77.7 % 51.6 %, −40 °C −60 °C, respectively, indicating applications, such as polar exploration, emergency communication equipment, station cold regions.
Language: Английский
Citations
52
Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 675, P. 1091 - 1099
Published: July 6, 2024
Language: Английский
Citations
33
Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(15), P. 5613 - 5626
Published: Jan. 1, 2024
A solubilization and stabilization effect of trace ethylene carbonate solvent assisted by the varied molecule-ion interaction was discovered in ether-based electrolyte, enabling 80 μm Li || LiNi 0.8 Co 0.1 Mn O 2 full-cell operate at 4.5 V stably.
Language: Английский
Citations
30
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(28)
Published: June 4, 2024
Abstract Electrolyte design is indeed a highly effective strategy to improve battery performance. However, identifying the intermolecular interaction in electrolyte solvation structure rarely reported potassium‐ion batteries. Herein, it discovered that solvent‐solvent can be formed when introducing cyclopentylmethyl ether (CPME) solvent into commonly used 1,2‐dimethoxyethane (DME)‐based electrolytes. Such not only analyzed by 2D 1 H‐ H correlation spectroscopy for first time but also found weaken K + ‐DME significantly, consequently enabling reversible (de‐)intercalation within graphite. By employing this without using any fluorine‐based solvent, new fluorine‐free and low‐concentration ether‐based designed, which compatible with graphite facilitates of high‐energy‐density safe potassium ion sulfur A novel molecular interfacial model further presented analyze behaviors ‐solvent‐anion complexes on electrode surface are affected interactions, elucidating reasons behind superior compatibility performance at scale. This work sheds some light critical role solvent–solvent interactions batteries provides valuable insights engineering enhancing electrolytes
Language: Английский
Citations
25
Energy storage materials, Journal Year: 2024, Volume and Issue: 65, P. 103185 - 103185
Published: Jan. 14, 2024
Language: Английский
Citations
21
Accounts of Chemical Research, Journal Year: 2024, Volume and Issue: 57(10), P. 1550 - 1563
Published: May 9, 2024
ConspectusLithium ion batteries (LIBs) with inorganic intercalation compounds as electrode active materials have become an indispensable part of human life. However, the rapid increase in their annual production raises concerns about limited mineral reserves and related environmental issues. Therefore, organic (OEMs) for rechargeable once again come into focus researchers because design flexibility, sustainability, compatibility. Compared conventional cathode Li batteries, OEMs possess some unique characteristics including flexible molecular structure, weak intermolecular interaction, being highly soluble electrolytes, moderate electrochemical potentials. These make suitable applications multivalent low-temperature redox flow decoupled water electrolysis. Specifically, structure interaction ions easily accessible to sites facilitate desolvation process on site, thus improving performance, while nature enables couples aqueous batteries. Finally, potential reversible proton storage release them mediators Over past ten years, although various new been developed Li-organic Na-organic Zn-organic other battery systems, still face many challenges, such poor cycle stability, inferior energy density, rate capability. previous reviews mainly focused or strategies improve performance OEMs. A comprehensive review explore establish correlation between these specific application conversion is lacking.In this Account, we initially provide overview sustainability friendliness conversion. Subsequently, summarize charge mechanisms different types Thereafter, comparison structural high solubility electrolyte, appropriate order correlations applications. Unlike that introduce progress Account specifically focuses exceptional corresponding conversion, previously published by our groups. include monovalent OEMs, electrolysis employing electrodes mediators. We hope will invaluable contribution development next-generation help unlock a world
Language: Английский
Citations
21
Joule, Journal Year: 2025, Volume and Issue: unknown, P. 101823 - 101823
Published: Feb. 1, 2025
Language: Английский
Citations
5
Advanced Science, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 7, 2025
The fast charging-discharging performance of power batteries has very practical significance. In terms electrochemistry, this requires and stable kinetics for electrochemical reaction processes. Despite the great complexity kinetics, it is clear that lithium-ion desolvation a subsequent step crossing through cathode-electrolyte interphase (CEI) are crucial to high-rate performance, in which two key steps depend heavily on working electrolyte formula. work, customized developed coordinate ion formation by introducing vinylene carbonate (VC), triphenylboroxin (TPBX), fluoroethylene (FEC) but excluding ethylene (EC). Serving Ni-rich cathodes, generates double-layered CEI, LiF-dominated inorganics inner layer, ROCOOLi-dominated organics outer not only efficient lithium transport. Meanwhile, PF6-${\mathrm{PF}}_6^ - $ -dominated solvation structure induced effectively decreases energy 29.72 kJ mol-1, supporting transport cathode interfacial Consequently, battery achieves long cycle at superior high rate 10 C.
Language: Английский
Citations
3