Progress in Polymer Science, Journal Year: 2025, Volume and Issue: unknown, P. 101944 - 101944
Published: March 1, 2025
Language: Английский
Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 29, 2025
Abstract Reducing the thickness of solid polymer electrolytes can help to enhance energy density for solid‐state batteries. However, ultrathin still face difficulties in preparation methods, mechanical properties, and interface instability. Herein, a free‐standing, scalable, electrolyte with 10 µm is reported. It achieved through situ thermal curing after filling porous electrospun polyacrylonitrile fiber membrane poly(ethylene glycol) diacrylate‐based electrolyte. Impressively, it contributes high ionic conductivity 8.8 × −4 S cm −1 at room temperature. The not only provide good strength but also offer Li 3 N‐enriched interphase, thereby stabilizing lithium metal anode. pouch cell pairing foil LiNi 0.8 Co 0.1 Mn O 2 cathode mass loading realize gravimetric/volumetric 380 Wh kg 936 L . This investigation provides new insights into potential fiber‐reinforced membranes high‐performance
Language: Английский
Citations
4
Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 23, 2025
In situ polymerization strategies hold great promise for enhancing the physical interfacial stability in solid-state batteries, yet (electro)chemical degradation of polymerized interfaces, especially at high voltages, remains a critical challenge. Herein, we find interphase engineering is crucial process and polymer pioneer an polymerization-fluorination (Poly-FR) strategy to create durable interfaces with excellent stabilities, achieved by designing bifunctional initiator both on-surface lithium donor reactions. The integrated fluorination converts Li2CO3 impurities on LiNi0.8Co0.1Mn0.1O2 (NCM811) surfaces into LiF-rich interphases, effectively inhibiting aggressive (de)lithiation intermediates protecting interface from underlying chemical degradation, thereby surpassing limitations alone. Furthermore, Poly-FR mediated symmetric Li|Li cells achieve impressive cycling up 12,000 h. Solid-state NCM811 cathodes Li metal anodes realize ultrastable performance 400 cycles 83.4% retention voltage 4.5 V. This work points toward advanced beyond.
Language: Английский
Citations
2
Energy storage materials, Journal Year: 2024, Volume and Issue: 70, P. 103564 - 103564
Published: June 1, 2024
Language: Английский
Citations
8
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Sept. 13, 2024
Abstract Solid‐state lithium metal batteries (SSLMBs) with poly (ethylene oxide) (PEO)‐based electrolytes have increasingly become one of the most promising battery technologies due to high energy density and safety. However, adverse electrode/electrolyte interface compatibility issues hinder further application. Herein, a PEO‐based composite solid electrolyte excellent anode cathode interfacial is designed via coordination modulation strategy induced by difluorobis(oxalato)phosphate (DFBOP). By utilizing this electrolyte, robust inorganic‐rich interphase involving LiF, Li x PO y F z , P─O components in situ generated on (Li) LiNi 0.8 Co 0.1 Mn O 2 (NCM811) surfaces forceful among PEO, bis(trifluoromethanesulphonyl)imide, DFBOP subsequent adjustment front orbital levels. It contributes homogeneous deposition an effective impediment PEO oxidation decomposition at voltage, promoting superior stability. Consequently, Li‐symmetric cells modified can achieve stable cycle over 7000 h 0.2 mA cm −2 . Specially, unique organic–inorganic interpenetration network structure enables 4.5 V Li/NCM811 steadily 100 cycles, discharge capacity 215.4 mAh g −1 initial coulombic efficiency 91.23%. This research has shed light design from perspective regulation construct high‐performance SSLMBs.
Language: Английский
Citations
8
Small, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 5, 2025
Abstract In situ polymerization of cyclic ethers is a promising strategy to construct solid‐state lithium (Li) metal batteries with high energy density and safety. However, their practical applications are plagued by the unsatisfactory electrochemical properties polymer electrolytes unstable solid electrolyte interphase (SEI). Herein, organic perfluorodecanoic acid (PFDA) proposed as new initiator polymerize 1,3‐dioxolane (PDOL), which enables as‐obtained PDOL deliver greatly enhanced ionic conductivity broadened window. Besides, experimental data theoretical calculations demonstrate dual‐layered SEI PFDA‐derived component on top LiF at bottom constructed surface Li metal, can provide enough mechanical strength suppress dendrite growth flexibility accommodate volume fluctuations during repeated cycling. As result, symmetric cells PFDA‐induced (P‐PDOL) achieve superior plating/stripping cycle for 1400 h 0.3 mA cm −2 . Additionally, Li||P‐PDOL||LiFePO 4 (LFP) full maintain stable cycling over 300 times 0.5 C. This work offers potential simultaneously prepare high‐performance stabilize metal/PDOL interface, providing research insights advance toward applications.
Language: Английский
Citations
1
Battery energy, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 8, 2025
ABSTRACT Polymer electrolytes (PEs) compatible with NCM cathodes in solid‐state lithium metal batteries (SSLMBs) are gaining recognition as key candidates for advanced electrochemical storage, offering significant safety and stability. Nevertheless, the inherent properties of PEs interactions at interface pivotal influencing SSLMBs' overall performance. This review offers an in‐depth examination PEs, focusing on design strategies that leverage electron‐group electronegativity molecular structure adjustments. Furthermore, it delves into challenges presented by between cathodes, including issues like poor contact, reactions, elevated resistance. The also discusses a range aimed stabilizing these interfaces, such applying surface coatings to NCM, optimizing employing situ polymerization techniques improve compatibility battery efficiency. conclusion insights future developments, highlighting importance optimization adoption effective methods enhance stability thus advancing practical implementation high‐performance SSLMBs.
Language: Английский
Citations
1
Energy storage materials, Journal Year: 2025, Volume and Issue: unknown, P. 104129 - 104129
Published: Feb. 1, 2025
Language: Английский
Citations
1
ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown
Published: March 21, 2025
Construction of polymer-based solid electrolytes with both low flammability and high ionic conductivity for lithium-metal batteries is still a great challenge but highly desirable. Herein, we report on series fiber-reinforced poly(ionic liquid) prepared through an in situ copolymerization liquid monomers (IL) poly(ethylene glycol) diacrylate (PEGDA) units different ratios inside polyacrylonitrile (PAN) fiber membrane. Such PAN/Poly-IL-PEGDA composite demonstrate promising due to the excellent fire-resistant feature employed IL units. Moreover, it remarkable see that optimized PAN/Poly-IL-PEGDA-1 electrolyte also exhibits dense structure thickness (31 μm), (0.32 mS cm-1 at 30 °C), wide electrochemical window (up 4.8 V). As result, LiFePO4//Li NCM//Li full cells such exhibit rate capability cycling stability. This study provides simple strategy preparing polymer high-performance batteries.
Language: Английский
Citations
1
Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(18), P. 6739 - 6754
Published: Jan. 1, 2024
A novel polymer architecture design for GPEs is proposed via in situ copolymerization of VC and a new acylamino-crosslinker. This enables accelerated Li + transport dual-reinforced stable interfaces, contributing to long-lifespan LMBs.
Language: Английский
Citations
5
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(49)
Published: Aug. 20, 2024
Abstract Polyester‐based electrolytes formed via in situ polymerization, have been regarded as one of the most promising solid electrolyte systems. Nevertheless, it is still a great challenge to address issue their high reactivity with metallic lithium anode by optimizing components and properties interphase (SEI). Herein, new class N‐containing additive, isopropyl nitrate (ISPN) that can be miscible ester solvents demonstrated, chemically stable ion‐conductive LiF‐Li 3 N composite SEI constructed. In addition, ISPN induce formation anion‐enriched solvation structures reduces desolvation barrier Li + , resulting fast transport . With addition ISPN, ionic conductivity has nearly doubled, reaching 5.3 × 10 −4 S cm −1 What's more, LiFePO 4 (LFP)|ISPN‐PTA|Li cell exhibits exceptional cycle stability charging capabilities, maintaining cycling for 850 cycles at C rate. Even when paired high‐voltage cathode, LiNi 0.6 Co 0.2 Mn O 2 (NCM622)|ISPN‐PTA|Li achieves an impressive capacity retention 97.59% after 165 5 C. This study offers novel approach ester‐based polymer electrolytes, paving way toward development high‐energy metal battery technologies.
Language: Английский
Citations
5