Designing Isocyanate‐Containing Elastomeric Electrolytes for Antioxidative Interphases in 4.7 V Solid‐State Lithium Metal Batteries

Advanced Energy Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 9, 2024

Abstract To facilitate the use of solid polymer electrolytes (SPEs) with high‐nickel (Ni) cathodes in high‐voltage lithium (Li) metal batteries (LMBs), it is crucial to address challenges low oxidative stability and formation vulnerable interphases. In this study, isocyanate groups (−N═C═O) are incorporated develop an SPE a bi‐continuous structure, consisting elastomeric plastic crystal phases. This rationally designed exhibits high ionic conductivity (0.9 × 10 −3 S cm −1 at 25 °C), excellent elasticity (elongation break 330%), enhanced (over 4.8 V vs. Li/Li⁺). A full cell, incorporating thin Li foil 40 µm, high‐Ni LiNi 0.8 Co 0.1 Mn O 2 (NCM811) cathode operating 4.7 Li/Li⁺, demonstrates cyclability, retaining 70% its initial capacity after 200 cycles under C‐rate 1C °C. The extended cycling isocyanate‐containing Li/Li⁺ attributed robust compact inorganic‐rich interphases enabled by antioxidative −N−C═O components, as well uniform deposition structured SPE. study suggests that system promising candidate for solid‐state LMBs constructing stable

Язык: Английский

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Metal-Ligand Coordination Induced Rapid Li+ Transport Kinetics Through Bidirectional Anchoring Strategy

Опубликована: Янв. 1, 2025

Язык: Английский

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Simultaneous Structure, Thermal, and Mechanics Regulation for Boosting Performance of PVDF-Based Solid-State Electrolytes

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер 17(9), С. 14058 - 14072

Опубликована: Фев. 18, 2025

Poly(vinylidene fluoride) (PVDF) is promising for polymer solid-state electrolytes (PSEs) but faces challenges such as low ionic conductivity, uneven strain distribution, and poor lithium (Li) dendrite inhibition. Herein, an effective strategy proposed to enhance PVDF-based PSEs by incorporating a fast ion conductor LiZr2(PO4)3 (LZP) with negative thermal expansion property NASICON-type structure, the effects are investigated using multifarious methods. The added LZP not only enhances mobility of PVDF chain concentration free Li+, regulates heat release volume during cycles, thereby protecting electrode morphology well improving interface between electrolyte. Compared pristine PSEs, conductivity increased 3.3 × 10-4 S cm-1, stability augmented adding 10 wt % LZP. At 25 °C 0.5 C, values discharge capacity retention Li|PVDF-10 %LZP|LiFePO4 %LZP|LiNi0.8Co0.1Mn0.1O2 full cells without liquid improved from 61.4 53.4% 90.4 87.7% after 300 200 respectively. enhancement mechanisms based on interactions heat, deformation, interface, transfer. It paves unique way develop simultaneously adjusting mechanics.

Язык: Английский

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A Hierarchical Multimetal Oxides@Graphene Fabric Electrode with High Energy Density and Robust Cycling Performance for Flexible Supercapacitors

Nano Letters, Год журнала: 2025, Номер unknown

Опубликована: Март 6, 2025

An advanced structure capable of hosting large electrochemical activity with desired balance in ion diffusion kinetics, faradic charge storage, and robust stability is the key to developing high-performance fabric-based supercapacitors (FSCs). Herein, we develop a hierarchical multimetal oxides@graphene fabric (Cu-MO@GFF) as supercapacitor electrode accelerated ionic diffusion, adsorption energy, redox reaction reversibility. As result, Cu-MO@GFF presents excellent mass capacitance (534 F g-1), high rate performance (266 g-1 at 10 A good cycle (96.9% capacitive retention after 20,000 cycles) 6 mol L-1 (M) KOH electrolyte. In addition, Cu-MO@GFF-based solid-state FSC delivers energy density (11.875 Wh kg-1), much-improved cyclic stability, bending capability. On account behavior, this can flexibly power various wearable devices (such luminous tags, bracelets, watches), which will offer new avenue for innovating next-generation devices.

Язык: Английский

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Ultra-thin, Scalable, and MOF Network-Reinforced Composite Solid Electrolyte for All-Solid-State Lithium Metal Batteries

Journal of Membrane Science, Год журнала: 2025, Номер unknown, С. 124009 - 124009

Опубликована: Март 1, 2025

Язык: Английский

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Robust and Antioxidative Quasi‐Solid‐State Polymer Electrolytes for Long‐Cycling 4.6 V Lithium Metal Batteries

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 30, 2025

Abstract Quasi‐solid‐state polymer electrolytes (QSPEs) have been considered as one of the most promising for high‐safety high‐energy‐density lithium metal batteries (LMBs). However, their inadequate mechanical properties and instability under high voltages pose significant challenges practical applications. Herein, robust antioxidative QSPEs are developed based on a polymer‐brush‐based rigid supporting film (BC‐ g ‐PLiMTFSI‐ b ‐PPFEMA, BC: bacterial cellulose, PLiMTFSI: poly(lithium (3‐methacryloyloxypropylsulfonyl) (trifluoromethylsulfonyl)imide), PPFEMA: poly(2‐(perfluorohexyl)ethyl methacrylate)). The BC nanofibril backbone can produce highly porous structure with outstanding strength. More importantly, PLiMTFSI‐ ‐PPFEMA side‐chains not only obviously increase conversion ratio easily oxidized monomers in QSPEs, but also possess strong interaction unstable electrolyte components. With such solid‐state electrolytes, Li/LiNi 0.8 Mn 0.1 Co O 2 full cell cathode loading (20.3 mg cm −2 ) exhibits specific discharge capacity 200.7 mAh −1 at 0.5 C demonstrates long lifespan 137 cycles retained 170.7 cut‐off voltage 4.5 V. 4.6 V, 147.0 after 187 be Li/LiCoO cells. This work provides feasible development strategy long‐cycling high‐voltage LMBs.

Язык: Английский

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Current progress and future perspectives of inorganic/organic composite solid electrolytes for solid-state lithium metal batteries

Materials Science and Engineering B, Год журнала: 2025, Номер 318, С. 118316 - 118316

Опубликована: Апрель 14, 2025

Язык: Английский

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Enhancing the Ion Transport Capacity of Composite Polymer Electrolyte via Covalent-Linked Two-Dimensional Layered MBene Nanomaterial for High-Performance Solid-State Lithium Metal Batteries

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown

Опубликована: Апрель 21, 2025

Improving the room temperature ionic conductivity of solid-state polymer electrolytes for lithium batteries is a big challenge. Exploring new composite one important solutions. Herein, inorganic two-dimensional layered metal boride nanomaterial (MBene) was first applied to electrolyte. The hyperbranched cross-linking electrolyte prepared by free radical polymerization double bond modified MBene and ether with bonds in presence PVDF-HFP salt. c provided material characteristics adsorbing salt anion. As result, DBMBene-DBHPG-PH CPEs reaches 9.35 × 10-4 S cm-1. Combination ATR-FTIR spectra, XANES DFT calculation reveals influence on ion transport. Dendrite-free growth high reversibility can be maintained more than 2000 h plating/stripping symmetric batteries. solid adapted LFP LMFP, NCM523 high-voltage cathode materials. It worth mentioning that assembled pouch cell also run stably 150 cycles at 0.1 C, showing higher cycle capacity. This work not only demonstrates novel MBene-based provides an effective strategy prevent aggregation fillers but exhibits excellent application prospects high-energy density

Язык: Английский

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Design of Ultrathin Asymmetric Composite Electrolytes for Interfacial Stable Solid-State Lithium-Metal Batteries

ACS Nano, Год журнала: 2024, Номер 18(27), С. 17890 - 17900

Опубликована: Июнь 25, 2024

Ultrathin composite electrolytes hold great promise for high energy density solid-state lithium metal batteries (SSLMBs). However, finding an electrolyte that can simultaneously balance the interfacial stability of anode and high-voltage cathode is challenging. The present study utilized both-side tape casting technique to fabricate ultrathin asymmetric reinforced with polyimide (PI) fiber membrane, a thickness 26.8 μm. implementation this structural design enables SSLMBs attain favorable characteristics, such as exceptional resistance dendrite puncture compatibility voltages. suppression growth extension cycle life symmetric by 4000 h are both experimental theoretically demonstrated under dual confinement PI membrane Li7La3Zr2O12 ceramic fibers. Furthermore, integration multicomponent solid interphase interface layers into enhance theirs cycling stability. With gravimetric/volumetric 333.1 Wh kg-1/713.2 L-1, assembled LiNi0.8Co0.1Mn0.1O2 pouch cell demonstrates safety. extensive application concept resolution electrode/electrolyte issues.

Язык: Английский

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Ultrathin, Mechanically Robust Quasi-Solid Composite Electrolyte for Solid-State Lithium Metal Batteries

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(17), С. 22482 - 22492

Опубликована: Апрель 23, 2024

Herein, we present the preparation and properties of an ultrathin, mechanically robust, quasi-solid composite electrolyte (SEO-QSCE) for solid-state lithium metal battery (SLB) from a well-defined polystyrene-b-poly(ethylene oxide) diblock copolymer (SEO), Li6.75La3Zr1.75Ta0.25O12 nanofiller, fluoroethylene carbonate plasticizer. Compared with ordered lamellar microphase separation SEO, SEO-QSCE displays bicontinuous phases, consisting Li+ ion conductive poly(ethylene domain robust framework polystyrene domain. Therefore, 12 μm-thick membrane exhibits exceptional ionic conductivity 1.3 × 10–3 S cm–1 at 30 °C, along remarkable tensile strength 5.1 MPa elastic modulus 2.7 GPa. The high mechanical robustness self-generated LiF-rich SEI enable to have extraordinary dendrite prohibition effect. SLB Li|SEO-QSCE|LiFePO4 reveals superior cycling performances °C over 600 cycles, maintaining initial discharge capacity 145 mAh g–1 retention 81% (117 g–1) after 400 cycles 0.5 C. high-voltage Li|SEO-QSCE|LiNi0.5Co0.3Mn0.2O2 good stability 150 °C. Moreover, enables pouch cell flexibility excellent safety features. current investigation delivers promising innovative approach preparing electrolytes features ultrathin design, robustness, electrochemical performance SLBs.

Язык: Английский

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