Edge‐Delocalized Electron Effect on Self‐Expediating Desolvation Kinetics for Low‐Temperature Li─S Batteries DOI Creative Commons
Yong‐Zheng Zhang, Xiang Li, Yanli Wang

et al.

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

Published: May 16, 2025

Abstract Lithium‐sulfur (Li─S) batteries suffer from significant capacity degradation, which is limited by high barriers interfacial desolvation, Li + transportation to sulfur redox conversions, exhibiting the depressive kinetics. Herein, electron effect in edge of catalysts modulated and corresponding strategy self‐transform Schottky heterojunction on MXene proposed achieve delocalized electronic density. As a protocol, electron‐delocalized boron‐doped MXene/TiO 2 (SH‐MTB) fabricated as electrochemical kinetic accelerators realize fast desolvation promote rapid conversion kinetics under low‐temperature. Specifically, with expedites dissociation [Li(solvents) x ] generate free ions, well‐confirmed theoretical calculations ex‐situ/in situ characterizations. Encouragingly, higher practical areal (5.0 mAh cm −2 ) negligible self‐discharge behaviors are achieved low‐temperature environments. A large pouch cell 200 mg s exhibits 9.3 lean electrolyte amount (5 µL −1 ), much better than state‐of‐art reports. further indicated microscopies, spectroscopical measurements X‐ray tests, SH‐MTB stabilizes chemical structure during charge/discharge process, showing promising potential heterostructure toward accelerating cascade carrier metal battery

Language: Английский

Pulse Current-Induced Homogeneous Phase Nucleation for High-Performance Conversion-Type Cathodes DOI

Chuntao Ma,

Yuhao Ma, Shuai Li

et al.

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 5, 2025

Conversion-type transition metal-based materials (MZx) are considered promising cathodes for lithium metal batteries due to their low cost, abundant availability, and high theoretical energy density. However, they suffer from rapid capacity decay caused by the transformation into two inhomogeneous phases during discharge. Herein, we use a pulse current discharge activation method (under 3C) induce homogeneous phase nucleations. As result, microsized FeS2 cathode transforms mixture of nanosized Fe Li2S, effectively mitigating volume expansion. It exhibits exceptional cycling performance, delivering specific 572.8 mAh g–1 after 800 cycles at 0.33C. Even areal 5.4 cm–2, it undergoes 180 with retention 89.3% This work highlights crucial role nucleation in achieving long life conversion-type cathodes.

Language: Английский

Citations

0
Lightweight Materials for High Energy Density Lithium–Sulfur Batteries DOI Open Access

Yifan Li,

Zhengran Wang,

Qi Zhang

et al.

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

Published: Feb. 28, 2025

Abstract At present, electronic devices such as electric vehicles and mobile phones have increasing requirements for battery energy density. Lithium–sulfur batteries (LSBs) a high theoretical density are considered potential choice realizing the next generation of (2600 W h kg −1 ) batteries. However, actual LSBs is much lower than due to poor conductivity sulfur, serious LiPSs shuttle, low sulfur utilization, so on. Many lightweight materials characterized by surface area designability. The reasonable design modify can reduce proportion inactive substances optimizing electrochemical performance, which crucial improving LSBs. few reviews discuss effect on from perspective whole system. Herein, application in six aspects: liquid electrolyte, solid cathode, anode, separator, current collector discussed. significance use further improvement summarized prospected.

Language: Английский

Citations

0
Tuning Polysulfides into Clustered‐States via Non‐coordinating Molecular Encapsulation to Achieve an Alternative Kinetics in Li─S Batteries DOI

Qingyi Zheng,

Leyuan Cui,

Xiaojiao Zhao

et al.

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

Published: April 2, 2025

Abstract The practical application of lithium–sulfur batteries is hindered by the polysulfide shuttle effect and sluggish kinetics inherent in solid–liquid–solid conversion mechanism, particularly under lean electrolyte conditions (<5 µL mg⁻¹). Weakly solvating electrolytes localized high‐concentration can suppress dissolution enable a quasi‐solid‐phase mechanism but suffer from severely limited reaction kinetics. Herein, clustered‐polysulfide‐mediated sulfur enabled novel composed 1,2‐dimethylbenzene (DTL) 1,2‐dimethoxyethane (DME) proposed. encapsulation DTL coordination TFSI⁻ with polysulfides drives aggregation so that clustered virtual shell boundaries be new basic reactive bridges gap between traditional dissolution‐dominated quasi‐solid‐state mechanism. (CPE) not only suppresses stabilizes lithium anode mitigating parasitic reactions also enables alternative promotes 3D Li₂S deposition, minimizing electrode passivation. Ultimately, achieve excellent electrochemical performance stably operate (<4.0 mg⁻¹) an area capacity >4 mAh cm −2 . This work elucidates relationship behavior redox kinetics, providing insight into understanding complex mechanisms.

Language: Английский

Citations

0
Research progress and perspectives on rechargeable batteries DOI
Guang Yang,

Zhimeng Hao,

Chun Fang

et al.

Chinese Chemical Letters, Journal Year: 2025, Volume and Issue: unknown, P. 111185 - 111185

Published: April 1, 2025

Language: Английский

Citations

0
Low‐Concentration Electrolyte Engineering for Rechargeable Batteries DOI
Zijun Wang, Xiaolin Guo,

Yueyao Dong

et al.

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

Published: April 21, 2025

Abstract Low‐concentration electrolytes (LCEs) present significant potential for actual applications because of their cost‐effectiveness, low viscosity, reduced side reactions, and wide‐temperature electrochemical stability. However, current electrolyte research predominantly focuses on regulation strategies conventional 1 m electrolytes, high‐concentration localized leaving design principles, optimization methods, prospects LCEs inadequately summarized. face unique challenges that cannot be addressed by the existing theories approaches applicable to three common mentioned above; thus, tailored provide development guidance are urgently needed. Herein, a systematic overview recent progress in is provided subsequent directions suggested. This review proposes core challenge high solvent ratio LCEs, which triggers unstable organic‐enriched electrolyte/electrode interface formation anion depletion near anode. On basis these issues, modification including passivation construction solvent‒anion interaction optimization, used various rechargeable battery systems. Finally, role advanced simulations cutting‐edge characterization techniques revealing LCE failure mechanisms further highlighted, offering new perspectives future practical application next‐generation batteries.

Language: Английский

Citations

0
Regulation of Electrostatic Shielding Effect by 18-Crown-6 Ether for Achieving Stable Deposition of Potassium Metal Anodes DOI

Hyokyeong Kang,

Hyeona Park, Josef Rizell

et al.

ACS Energy Letters, Journal Year: 2025, Volume and Issue: unknown, P. 2543 - 2552

Published: April 30, 2025

Language: Английский

Citations

0
Edge‐Delocalized Electron Effect on Self‐Expediating Desolvation Kinetics for Low‐Temperature Li─S Batteries DOI Creative Commons
Yong‐Zheng Zhang, Xiang Li, Yanli Wang

et al.

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

Published: May 16, 2025

Abstract Lithium‐sulfur (Li─S) batteries suffer from significant capacity degradation, which is limited by high barriers interfacial desolvation, Li + transportation to sulfur redox conversions, exhibiting the depressive kinetics. Herein, electron effect in edge of catalysts modulated and corresponding strategy self‐transform Schottky heterojunction on MXene proposed achieve delocalized electronic density. As a protocol, electron‐delocalized boron‐doped MXene/TiO 2 (SH‐MTB) fabricated as electrochemical kinetic accelerators realize fast desolvation promote rapid conversion kinetics under low‐temperature. Specifically, with expedites dissociation [Li(solvents) x ] generate free ions, well‐confirmed theoretical calculations ex‐situ/in situ characterizations. Encouragingly, higher practical areal (5.0 mAh cm −2 ) negligible self‐discharge behaviors are achieved low‐temperature environments. A large pouch cell 200 mg s exhibits 9.3 lean electrolyte amount (5 µL −1 ), much better than state‐of‐art reports. further indicated microscopies, spectroscopical measurements X‐ray tests, SH‐MTB stabilizes chemical structure during charge/discharge process, showing promising potential heterostructure toward accelerating cascade carrier metal battery

Language: Английский

Citations

0