Collaborative Design of Multi‐Molecules Boosts the Performance of the Full‐Range Three‐Dimensional Quasi‐Solid Polymer Electrolyte for Lithium Metal Batteries DOI

Hong Teng,

Aotian Zhang,

Ying Liu

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: May 24, 2025

Abstract Solid polymer electrolytes, known for their ease of processing and excellent interfacial contact, play a crucial role in developing high‐energy‐density lithium metal batteries. To address the limitations single‐function electrolytes such as polyethylene oxide polyacrylonitrile, it's imperative to develop with superior comprehensive performance by incorporating functional organic molecules. In this study, quasi‐solid electrolyte named VAPE is prepared using multivariate molecular synergistic strategy. This approach integrates vinyl acetate (VAC), acrylonitrile (AN), trimethylolpropane ethoxylate triacylate (ETPTA) into full‐range, 3D cross‐linked network via radical‐initiated polymerization. The structure effect multiple units accelerate lithium‐ion transport kinetics induce formation dense stable solid‐electrolyte interphase cathode‐electrolyte layers. As result, assembled Li/VAPE 13 /Li symmetric cell exhibits cycling over 800 h. Furthermore, terpolymer demonstrates an electrochemical window up 5.30 V. Therefore, LiNi 0.8 Mn 0.1 Co O 2 (NCM811)/VAPE battery displays stability 80% capacity retention after 350 cycles at 0.5C. Even ultra‐high cut‐off voltage 4.7 V, NCM811/VAPE achieves rate 84.8% 100 0.2C.

Language: Английский

Tailoring Multiple Interactions in Poly (Urethane‐Urea)‐Based Solid‐State Polymer Electrolytes for Long‐Term Cycling Lithium Metal Batteries DOI Open Access
Di Hu, Hongzhang Huang,

Chenyang Wang

et al.

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

Published: March 10, 2025

Abstract Polyethylene oxide (PEO)‐based solid polymer electrolytes (SPEs) are considered as one of the most promising candidates for next‐generation lithium metal batteries. However, their application is limited by poor electrode/electrolyte interfacial stability, low Li‐ions transference number, and weak mechanical strength. Herein, poly (urethane‐urea)‐based SPEs developed to enhance improve transport kinetics, provide superior properties. The (urethane‐urea) structure integrates abundant polar groups rigid conjugated moieties, which facilitate interactions with anions salt in SPEs, promoting number supporting formation a LiF‐rich electrolyte interphase (SEI) guide uniform deposition suppress dendrite growth. Furthermore, supramolecular crosslinked network formed through multiple hydrogen bonds π‐π stacking interactions, enhancing strength toughness SPEs. As result, Li//Li solid‐state symmetric cells assembled this SPE demonstrate stable cycling over 3000 h, while LiFePO 4 retain 93.6% initial capacity after 500 cycles at rate 1C. This work presents feasible design strategy developing highly functional materials.

Language: Английский

Citations

2
Enthalpy‐Driven Molecular Engineering Enables High‐Performance Quasi‐Solid‐State Electrolytes for Long Life Lithium Metal Batteries DOI Creative Commons
Zilong Wang, Longyun Shen,

Yilin Ma

et al.

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

Published: April 7, 2025

Abstract The advancement of lithium metal batteries toward their theoretical energy density potential remains constrained by safety and performance issues inherent to liquid electrolytes. Quasi‐solid‐state electrolytes (QSSEs) based on poly‐1,3‐dioxolane (poly‐DOL) represent a promising development, yet challenges in achieving satisfactory Coulombic efficiency long‐term stability have impeded practical implementation. While nitrate addition can enhance efficiency, its incorporation results prohibitively slow polymerization rates spanning several months. In this work, high‐polymerization‐enthalpy 1,1,1‐trifluoro‐2,3‐epoxypropane is introduced as co‐polymerization promoter, successfully integrating into poly‐DOL‐based QSSEs. resulting electrolyte demonstrates exceptional with 2.23 mS cm −1 ionic conductivity at 25 °C, 99.34% Li|Cu cells, stable interfaces sustained through 1300 h symmetric cell cycling. This approach also suppresses poly‐DOL crystallization, enabling Li|LiFePO 4 cells maintain beyond 2000 cycles 1C. Scale‐up validation ≈1 Ah Li|NCM811 pouch achieves 94.4% capacity retention over 60 cycles. strategy establishes new pathway for developing high‐performance, situ polymerized quasi‐solid‐state storage applications.

Language: Английский

Citations

1
Ultra-thin, Scalable, and MOF Network-Reinforced Composite Solid Electrolyte for All-Solid-State Lithium Metal Batteries DOI
Guoxu Wang, Xiaomeng Fan, Fanfan Liu

et al.

Journal of Membrane Science, Journal Year: 2025, Volume and Issue: unknown, P. 124009 - 124009

Published: March 1, 2025

Language: Английский

Citations

0
Eco‐Friendly Soy Protein‐Based Solid‐State Electrolyte Exhibiting Stable High‐Rate Cyclic Performances by Molecular Regulation Design DOI
Yue Li, Peipei Ding, Li Cai

et al.

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

Published: April 30, 2025

Abstract Solid‐state electrolytes play critical roles in solid‐state lithium‐ion batteries. In this study, soy protein (SP), a green and renewable biomass polymer, is explored as backbone for electrolytes. SP‐based (SPPV@VEC‐SSEs) are prepared with the soft‐hard interpenetrating network by modulating molecular structure of SP. process, active groups on SP utilized to form hydrogen bonds polyvinylidene difluoride (PVDF), constructing hard phase cross‐linked network, which causes folded quaternary unfold create more lithium ion transport channels; Then vinylethylene carbonate (VEC) monomers infused into through free radical polymerization enhancing both availability sites improvement interfacial performance. The exhibit high ionic conductivity (7.95 × 10 −4 S cm −1 ) Li + transference number (0.78) at 60 °C. corresponding LFP||SPPV3@VEC‐SSEs||Li battery delivers good cyclic stability up >800 cycles under temperature 120 °C cycling rate 2 C. Results experimental theoretical analysis reveal that construction facilitates unfolding SP, exposing oxygen‐containing cationic effectively bind ions anions salts. zwitterionic not only gives rise but promotes formation stable interface layer between electrolyte electrodes. Compared organic polymer (polyethylene oxide (PEO) poly(trimethyl carbonate) (PTMC)), SPPV@VEC‐SSEs an order magnitude lower release volatiles, significantly reducing their environmental impact across entire lifecycle. This work provides pathway preparing bio‐based sustainable long lifespans extreme conditions.

Language: Английский

Citations

0
Contriving molecular configuration to realize a bidirectionally stable quasi-solid polymer electrolyte for high-voltage Li metal batteries DOI
Silin Chen, Shunchao Ma, Yufan Zhang

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: 516, P. 163968 - 163968

Published: May 19, 2025

Citations

0
Collaborative Design of Multi‐Molecules Boosts the Performance of the Full‐Range Three‐Dimensional Quasi‐Solid Polymer Electrolyte for Lithium Metal Batteries DOI

Hong Teng,

Aotian Zhang,

Ying Liu

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: May 24, 2025

Abstract Solid polymer electrolytes, known for their ease of processing and excellent interfacial contact, play a crucial role in developing high‐energy‐density lithium metal batteries. To address the limitations single‐function electrolytes such as polyethylene oxide polyacrylonitrile, it's imperative to develop with superior comprehensive performance by incorporating functional organic molecules. In this study, quasi‐solid electrolyte named VAPE is prepared using multivariate molecular synergistic strategy. This approach integrates vinyl acetate (VAC), acrylonitrile (AN), trimethylolpropane ethoxylate triacylate (ETPTA) into full‐range, 3D cross‐linked network via radical‐initiated polymerization. The structure effect multiple units accelerate lithium‐ion transport kinetics induce formation dense stable solid‐electrolyte interphase cathode‐electrolyte layers. As result, assembled Li/VAPE 13 /Li symmetric cell exhibits cycling over 800 h. Furthermore, terpolymer demonstrates an electrochemical window up 5.30 V. Therefore, LiNi 0.8 Mn 0.1 Co O 2 (NCM811)/VAPE battery displays stability 80% capacity retention after 350 cycles at 0.5C. Even ultra‐high cut‐off voltage 4.7 V, NCM811/VAPE achieves rate 84.8% 100 0.2C.

Language: Английский

Citations

0