Local charge homogenization strategy enables ultra-high voltage tolerance of polyether electrolytes for 4.7 V lithium metal batteries DOI Creative Commons

Yuanlong Wu,

Piao Luo,

Kexin Su

et al.

National Science Review, Journal Year: 2024, Volume and Issue: 12(2)

Published: Dec. 3, 2024

ABSTRACT In-situ fabricated polyether electrolytes have been regarded as one of the most promising solid electrolyte systems. Nevertheless, they cannot match high-voltage cathodes over 4.3 V due to their poor oxidative stability. Herein, we propose an effective local charge homogenization strategy based on triglycidyl isocyanurate (TGIC) crosslinker, achieving ultra-high-voltage electrochemical stability (viz. PTIDOL) at cutoff voltages up 4.7 V. The introduction TGIC optimizes Li+ solvation environment, thereby homogenizing distribution ether oxygen (EO) sites, resulting in significantly enhanced main chain. Consequently, Li|PTIDOL|LiNi0.6Co0.2Mn0.2O2 (NCM622) cell achieves long-term operation ultra-high voltage with a capacity retention 81.8% after 400 cycles, best results reported for date. This work provides significant insights development tolerance and advancement high-energy-density batteries.

Language: Английский

Thermoresponsive Mono‐Solvent Electrolyte Inhibiting Parasitic Reactions for Safe Lithium Metal Batteries DOI
Jiaxin Guo, Chang Gao, Yunfei Du

et al.

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

Published: April 10, 2025

Abstract Solvents in liquid and gel polymer electrolytes are recognized for contributing to high ionic conductivity high‐energy‐density lithium metal batteries. However, parasitic reactions involving solvents induce safety risks under thermal abuse conditions poor lifespan during room‐temperature cycles, which rarely investigated. This study introduces a thermoresponsive mono‐solvent electrolyte as built‐in switch. The polymerizes at elevated temperatures, creating passivate network without residue solvents. exhibits stability with 91% mass retention 200 °C significantly suppresses side between the electrolyte, reducing runaway risks. Ah‐level Li||LiNi 0.8 Co 0.1 Mn O 2 pouch batteries employing this can efficiently improve critical temperature of by 75 compared electrolyte. At ambient promotes formation stable solid interphase (SEI) rich LiF Li O, effectively dendrite growth on anode. Consequently, 0.5 0.2 0.3 cells retain capacity after 152 even high‐loading cathodes (19.7 mg cm −2 , 3 mAh ). research offers valuable insights into inhibiting electrochemical cycle runaway, enhancing

Language: Английский

Citations

1
Eco-friendly guar gum polymer electrolytes doped with lithium nitrate for energy storage devices DOI

K. S. Venkatesh,

I. Jenova,

S. Karthikeyan

et al.

Journal of Materials Science Materials in Electronics, Journal Year: 2025, Volume and Issue: 36(3)

Published: Jan. 1, 2025

Language: Английский

Citations

0
Dynamic Cycling of Ultrathin Li Metal Anode via Electrode–Electrolyte Interphase Comprising Lithiophilic Ag and Abundant LiF under Carbonate‐Based Electrolyte DOI Creative Commons
Jong Hun Sung,

Un Hwan Lee,

J. D. Lee

et al.

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

Published: March 12, 2025

Abstract The use of ultrathin lithium (Li) metal anode in Li batteries (LMBs) has the potential to significantly improve energy density comparison conventional LMBs. However, they possess several challenges such as intrinsic dendrite growth and dead Li, leading poor cyclability coulombic efficiency (CE). In addition, can cause much faster degradation performances than thicker one owing exhaustion resource with less compensation. To address these problems, silver trifluoromethanesulfonate (AgCF 3 SO , AgTFMS) is proposed a functional electrolyte additive carbonate‐based buffer dendritic provide enhanced cyclability. Interestingly, Ag derived from AgTFMS exhibits lithiophilic properties through an alloying reaction Li. Furthermore, CF group generates physically stable LiF‐rich solid‐electrolyte interphase (SEI), which further suppresses growth. An LiNi 0.8 Mn 0.1 Co O 2 (NMC811) full‐cell comprising (20 µm) reveals excellent capacity retention up 88.2% over 200 cycles, well outstanding rate capability under harsh practical condition. As result, pave new dimension for design high LMBs using anode.

Language: Английский

Citations

0
Design of ultrafast lithium ion channel for solid-state lithium metal batteries by in-situ polymerization induced phase separation DOI
Long Wan,

Haiying Nie,

Qiyao Yu

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162810 - 162810

Published: April 1, 2025

Language: Английский

Citations

0
Construction of weakly solvating solid polymer electrolytes for high-voltage and stable lithium metal batteries DOI
Wenxi Yang, Ming Zhang, Jintian Wu

et al.

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 694, P. 137730 - 137730

Published: April 28, 2025

Language: Английский

Citations

0
Tuning electronic structure of MOF-based solid-state electrolytes to activate dormant lithium and facilitate ion transport kinetics towards lithium metal batteries DOI
Qing Liu, Qi An, Kun Zeng

et al.

Energy & Environmental Science, Journal Year: 2025, Volume and Issue: 18(10), P. 4934 - 4948

Published: Jan. 1, 2025

A MOF(Ti-Co) membrane with abundant catalytic sites enhances Li + transport and anion confinement. Spontaneous redox boosts charge-transfer kinetics, improves utilization suppresses dendrite formation, improving electrochemical performance.

Language: Английский

Citations

0
Multifunctional siloxanes for high-performance Lithium metal anodes DOI
Yanpeng Wang, Yusheng Luo, Zhaoyang Song

et al.

Journal of Energy Storage, Journal Year: 2025, Volume and Issue: 127, P. 117142 - 117142

Published: May 22, 2025

Language: Английский

Citations

0
Local charge homogenization strategy enables ultra-high voltage tolerance of polyether electrolytes for 4.7 V lithium metal batteries DOI Creative Commons

Yuanlong Wu,

Piao Luo,

Kexin Su

et al.

National Science Review, Journal Year: 2024, Volume and Issue: 12(2)

Published: Dec. 3, 2024

ABSTRACT In-situ fabricated polyether electrolytes have been regarded as one of the most promising solid electrolyte systems. Nevertheless, they cannot match high-voltage cathodes over 4.3 V due to their poor oxidative stability. Herein, we propose an effective local charge homogenization strategy based on triglycidyl isocyanurate (TGIC) crosslinker, achieving ultra-high-voltage electrochemical stability (viz. PTIDOL) at cutoff voltages up 4.7 V. The introduction TGIC optimizes Li+ solvation environment, thereby homogenizing distribution ether oxygen (EO) sites, resulting in significantly enhanced main chain. Consequently, Li|PTIDOL|LiNi0.6Co0.2Mn0.2O2 (NCM622) cell achieves long-term operation ultra-high voltage with a capacity retention 81.8% after 400 cycles, best results reported for date. This work provides significant insights development tolerance and advancement high-energy-density batteries.

Language: Английский

Citations

3