Journal of Energy Storage, Год журнала: 2024, Номер 102, С. 113983 - 113983
Опубликована: Окт. 2, 2024
Advanced Materials, Год журнала: 2025, Номер unknown
Опубликована: Янв. 31, 2025
Solid-state lithium (Li) metal batteries (SSLMBs) have garnered considerable attention due to their potential for high energy density and intrinsic safety. However, widespread development has been hindered by the low ionic conductivity of solid-state electrolytes. In this contribution, a novel Li-rich transport mechanism is proposed achieve ultrafast Li-ion conduction in composite By incorporating cation-deficient dielectric nanofillers into polymer matrices, it found that negatively charged cation defects effectively intensify adsorption Li ions, resulting concentration enrichment on surface fillers. More importantly, these formed layers are interconnected establish continuous networks. The electrolyte exhibited remarkably ion activation (0.17 eV) achieved an unprecedented approaching 1 × 10⁻3 S cm⁻1 at room temperature. Li||LiNi0.8Co0.1Mo0.1O2 full cells demonstrated extended cycling life over 200 cycles with capacity retention 70.7%. This work provides fresh insight improving constructing networks, paving way high-performance SSLMBs.
Язык: Английский
Процитировано
2
Advanced Functional Materials, Год журнала: 2024, Номер 34(37)
Опубликована: Май 8, 2024
Abstract Cellulose‐based solid electrolyte possesses the characteristics of low cost, high strength, and sustainability, has great potential in field solid‐state lithium metal batteries. However, large hydrogen bonds between cellulose molecules make molecular chains tightly arranged, hinder ion conduction, seriously limiting its further development. Herein, an ion‐conducting grafting strategy is proposed for fabrication acetate quasi‐solid composite (CLA‐CN‐LATP QCE) with a superior ionic conductivity 1.25 × 10 −3 S cm −1 at room temperature. Benefited from grafted functional molecules, assembled symmetrical battery exhibits polarization voltage highly stable stripping/plating cycling more than 1200 h 0.1 mA −2 current density. Moreover, it endows LFP|CLA‐CN‐LATP QCE|Li excellent long‐cycle stability 1500 cycles 0.5 C 25 °C capacity retention 92.1%. Importantly, this work provides effective opening transport channel improving interface properties electrolytes electrodes.
Язык: Английский
Процитировано
11
Journal of Energy Storage, Год журнала: 2024, Номер 96, С. 112696 - 112696
Опубликована: Июнь 22, 2024
Язык: Английский
Процитировано
10
Energy & Fuels, Год журнала: 2024, Номер 38(22), С. 21674 - 21700
Опубликована: Ноя. 5, 2024
Solid-state lithium batteries (SSLBs) utilize solid electrolytes (SEs) instead of their liquid counterpart, providing higher energy density and safety, are considered as potential storage technology. Among the various kinds SEs, garnet (Li7La3Zr2O12, LLZO) electrolyte has considerable Li-ion conductivity robust air/chemical stability, rendering it an excellent candidate for commercialization SSLBs. In recent years, numerous efforts have been made to improve ionic SEs. These successfully achieved a high ∼10–3 S cm–1 at room temperature. Nevertheless, emerging issue pertains interfacial stability garnet-based electrolytes. Therefore, our focus lies on challenges associated with SSLBs, including (i) interface between metal anode SE, (ii) SE high-voltage cathodes, (iii) polymeric additives SE. The solution strategies these target-oriented issues briefly discussed. light discourse enhanced performance, principle designing high-performance interfaces is proposed. A future perspective also offered development
Язык: Английский
Процитировано
5
Particuology, Год журнала: 2024, Номер 93, С. 203 - 210
Опубликована: Июль 9, 2024
Язык: Английский
Процитировано
4
Chemical Communications, Год журнала: 2024, Номер unknown
Опубликована: Янв. 1, 2024
UIO-66-F 4 (Zr) was employed as a filler in solid-state electrolytes. Thanks to fluorinated groups, the interaction between MOF and polymer improved, which not only stabilizes SEI layer but also improves ionic conductivity of SCEs.
Язык: Английский
Процитировано
4
Advanced Functional Materials, Год журнала: 2025, Номер unknown
Опубликована: Янв. 19, 2025
Abstract Lithium dendrites and flammable carbonate electrolytes present significant challenges to the progress of lithium metal batteries (LMBs), necessitating urgent development novel solid electrolytes. Herein, a non‐flammable polymer deep eutectic electrolyte (PDEE) is proposed by encapsulating N‐methylacetamide (NMA)‐based within framework formed ethoxylated trimethylolpropane triacrylate (ETPTA) via in situ polymerization. The robust Li + ‐solvent interaction between polar groups NMA nitrate (LiNO 3 ) significantly improves solubility LiNO . Therefore, an inorganic‐rich LiF, x N, LiN O y interphase (SEI) designed introducing fluoroethylene (FEC) into PDEE. comprehensive characterizations simulations reveal that moderate addition can modulate solvated structure result uniform deposition. PDEE‐2 (PDEE with 2 wt% exhibits high ionic conductivity (2.5 mS cm −1 at 25 °C) transference number (0.61). Li||LiFePO4 (LFP) cells maintain cycling stability for 1700 cycles C, Li||Ni 0.8 Co 0.1 Mn (NCM811) achieve 300 0.5 C capacity retention 86.7%, one best results eutectic‐based This study presents innovative method producing stable encourages utilization LMBs.
Язык: Английский
Процитировано
0
Advanced Functional Materials, Год журнала: 2025, Номер unknown
Опубликована: Янв. 19, 2025
Abstract Unsatisfying preparation controllability, mechanical properties, ionic conductivities, and working voltage windows limit the practical applications of solid polymer electrolytes (SPEs) in lithium‐metal batteries. Herein, a 3D printing strategy combined with zwitter molecule modification is proposed to efficiently solve problems SPEs polyvinylidene fluoride‐hexafluoropropylene (PH) matrix. The electron‐donating property resulting from carboxyl groups aspartate acid (Asp) induces cis‐conformation change fluoride, which enhances Li + transport anion immobilization on chains. In addition, amphoteric functional Asp simultaneously promote lithium salt dissociation desolvation N,N‐dimethylformamide, thus leading formation stable 3 N/LiF‐enriched interphases between electrodes electrolyte. Moreover, technology increases continuity uniformity SPE membrane, further increasing conductivity properties. As result, exhibits high (1.20 × 10 −4 S cm −1 ), large transfer number (0.68), wide electrochemical window (4.6 V), good tensile strength (≈110 MPa), endowing half cells cycling performance over 2000 h low overpotential 40 mV. Furthermore, high‐energy densities (492 Wh kg 1303 L ) are delivered by pouch cell SPE, indicating application prospects.
Язык: Английский
Процитировано
0
Advanced Functional Materials, Год журнала: 2025, Номер unknown
Опубликована: Янв. 19, 2025
Abstract The composite solid‐state electrolyte, composed of polyvinylidene fluoride (PVDF) polymer and garnet, exhibits great promising in batteries. However, the dehydrofluorination PVDF induced by garnet narrows its voltage window deteriorates electrode‐electrolyte interface, inhibits ion transport. Here, a coordination interphase is constructed on fillers via situ polymerization cyanoethyl cellulose (CEC) to stabilize organic/inorganic interface. La atoms coordinating with C≡N groups CEC, creating Lewis basic environment that facilitates linking adjacent form conjugated C═N sequences, thereby forming 5‐nm ultrathin polycyanethyl (PCEC) layer surface. interaction between PCEC triggers strong Li + adsorption, thus producing fast migration pathway through garnet/PCEC Consequently, electrolyte demonstrates high room‐temperature ionic conductivity 5.6 × 10 −4 S cm −1 , cutoff up 4.8 V versus /Li, excellent stability against lithium metal. Using this practical 560 mAh Li|LiNi 0.9 Co 0.05 Mn O 2 metal pouch cell achieves superior weight volume energy densities 408 Wh kg 733 L respectively.
Язык: Английский
Процитировано
0
Supramolecular Materials, Год журнала: 2025, Номер 4, С. 100097 - 100097
Опубликована: Янв. 19, 2025
Язык: Английский
Процитировано
0