Polymer‐Based Solid‐State Electrolytes for High‐Energy‐Density Lithium‐Ion Batteries – Review

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(38)

Published: Aug. 29, 2023

Abstract Portable electronic devices and electric vehicles have become indispensable in daily life caused an increasing demand for high‐performance lithium‐ion batteries (LIBs) with high‐energy‐density. This work compares the intrinsic characteristics Li + conduction mechanisms of various electrolytes, aiming at emphasizing their suitability high‐energy‐density LIBs. Among all polymer‐based solid‐state electrolytes (SSEs) are most promising candidates, as they demonstrate comprehensive properties. The advantages disadvantages commonly used polymer matrix materials SSEs discussed, along typical approaches to address limitations. As significant issues cycle stability, development related cathode/electrolyte interfacial contact wetting, electrochemical compatibility, LIBs employing SSEs, well anode/electrolyte chemical stability lithium dendrite suppression comprehensively reviewed analyzed. Finally, perspectives on future research directions developing highlighted building upon existing literature.

Language: Английский

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12 µm‐Thick Sintered Garnet Ceramic Skeleton Enabling High‐Energy‐Density Solid‐State Lithium Metal Batteries

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(13)

Published: Feb. 17, 2023

Abstract Ultrathin composite solid‐state electrolytes (CSSEs) demonstrate great promise in high‐energy‐density batteries due to their ultrathin thickness and good adaptability lithium metal anodes. However, uncontrolled dendrite growth performance deterioration caused by the aggregation of inorganic powder restrict practical application CSSEs. Herein, a flexible, self‐supporting Li 6.5 La 3 Zr 1.5 Ta 0.5 O 12 (LLZO) ceramic skeleton is prepared tape‐casting method. Subsequently, µm‐thick CSSE with 3D interconnection structure achieved through situ UV curing ethoxylated trimethylolpropane triacrylate (ETPTA) (CS‐CSSE). This design includes sintered LLZO ceramic, which can avoid uneven distribution phase regulate ion migration. Meanwhile, cross‐linked ETPTA polymer electrolyte contributes lower interfacial impedance. In addition, continuous two‐phase interface also provide fast transmission channel for + . As result, CS‐CSSE demonstrates superior transference number (0.83) ionic conductivity (1.19 × 10 ‐3 S cm ‐1 ) at 25 °C. As‐prepared Li|LiNi 0.83 Co 0.12 Mn 0.05 2 exhibit high discharge specific capacities 185.4 mAh g 0.1 C average coulombic efficiency greater than 99%. The pouch cells energy densities 376 Wh Kg 1186 L work provides new insights into ceramics batteries.

Language: Английский

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Beyond LiF: Tailoring Li₂O-Dominated Solid Electrolyte Interphase for Stable Lithium Metal Batteries

ACS Nano, Journal Year: 2024, Volume and Issue: 18(3), P. 1969 - 1981

Published: Jan. 11, 2024

The components and structures of the solid-electrolyte interphase (SEI) are critical for stable cycling lithium metal batteries (LMBs). LiF has been widely studied as dominant component SEI, but Li2O, which a much lower diffusion barrier Li+, rarely investigated SEI. effect Li2O-dominated SEI on electrochemical performance still remains elusive. Herein, an ultrastrong coordinated cosolvation diluent, 2,3-difluoroethoxybenzene (DFEB), is designed to modulate solvation structure tailor LMBs. In DFEB-based LHCE (DFEB-LHCE), DFEB intensively participates in first shell synergizes with FSI– inorganic-rich different from LiF-dominated formed conventional LHCE. Benefiting this special architecture, high Coulombic efficiency (CE) 99.58% Li||Cu half cells, voltage profiles, dense uniform deposition, well effective inhibition Li dendrite formation symmetrical cell, achieved. More importantly, DFEB-LHCE can be matched various cathodes such LFP, NCM811, S cathodes, Li||LFP full cell using possesses 85% capacity retention after 650 cycles 99.9% CE. Especially 1.5 Ah practical pouch achieves excellent 89% 250 superb average CE 99.93%. This work unravels superiority feasibility tailoring through modulation structures.

Language: Английский

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Engineering the Structural Uniformity of Gel Polymer Electrolytes via Pattern‐Guided Alignment for Durable, Safe Solid‐State Lithium Metal Batteries

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(38)

Published: June 3, 2023

Ultrathin and super-toughness gel polymer electrolytes (GPEs) are the key enabling technology for durable, safe, high-energy density solid-state lithium metal batteries (SSLMBs) but extremely challenging. However, GPEs with limited uniformity continuity exhibit an uneven Li+ flux distribution, leading to nonuniform deposition. Herein, a fiber patterning strategy developing engineering ultrathin (16 µm) fibrous high ionic conductivity (≈0.4 mS cm-1 ) superior mechanical toughness (≈613%) durable safe SSLMBs is proposed. The special patterned structure provides fast transport channels tailoring solvation of traditional LiPF6 -based carbonate electrolyte, rapid transfer kinetics uniform flux, boosting stability against Li anodes, thus realizing ultralong plating/stripping in symmetrical cell over 3000 h at 1.0 mA cm-2 , mAh . Moreover, LiFePO4 loading 10.58 mg deliver stable cycling life 1570 cycles C 92.5% capacity retention excellent rate 129.8 g-1 5.0 cut-off voltage 4.2 V (100% depth-of-discharge). Patterned systems powerful strategies producing SSLMBs.

Language: Английский

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Gel polymer electrolytes for rechargeable batteries toward wide-temperature applications

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(10), P. 5291 - 5337

Published: Jan. 1, 2024

Design principles, engineering strategies, challenges, and opportunities of gel polymer electrolytes for rechargeable batteries toward wide-temperature applications are thoroughly reviewed.

Language: Английский

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Monodispersed Sub‐1 nm Inorganic Cluster Chains in Polymers for Solid Electrolytes with Enhanced Li‐Ion Transport

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(47)

Published: Aug. 26, 2023

Abstract The organic–inorganic interfaces can enhance Li + transport in composite solid‐state electrolytes (CSEs) due to the strong interface interactions. However, non‐conductive areas CSEs with inert fillers will hinder construction of efficient channels. Herein, fully active conductive networks are proposed improve by composing sub‐1 nm inorganic cluster chains and organic polymer chains. monodispersed matrix a brief mixed‐solvent strategy, their diameter ultrafine dispersion state eliminate interior filler‐agglomeration, respectively, providing rich surface for Therefore, 3D connected finally construct homogeneous, large‐scale, continuous fast Furthermore, conjecture about 1D oriented distribution along is optimize pathways. Consequently, as‐obtained possess high ionic conductivity at room temperature (0.52 mS cm −1 ), transference number (0.62), more mobile (50.7%). assembled LiFePO 4 /Li cell delivers excellent stability 1000 cycles 0.5 C 700 1 C. This research provides new strategy enhancing interfaces.

Language: Английский

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In-situ polymerized PEO-based solid electrolytes contribute better Li metal batteries: Challenges, strategies, and perspectives

Journal of Energy Chemistry, Journal Year: 2024, Volume and Issue: 92, P. 548 - 571

Published: Jan. 20, 2024

Language: Английский

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High Energy Density Solid‐State Lithium Metal Batteries Enabled by In Situ Polymerized Integrated Ultrathin Solid Electrolyte/Cathode

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(18)

Published: Jan. 20, 2024

Abstract Solid‐state batteries (SSBs) are regarded as the most promising next‐generation energy storage devices due to their potential achieve higher safety performance and density. However, troubles in preparation of ultrathin solid‐state electrolytes (SEs) well resultant compromise mechanical strength greatly limit application SSBs. Herein, a novel situ polymerized integrated SE/cathode design is developed. The ceramic layer supported on cathode serves not only rigid scaffold prevent direct contact between anode but also active inorganic fillers enhance properties SE film. unique Li‐ion coordination environments Li hopping mechanism profoundly promote fast ion transport composite SEs. SEs simultaneously balance thickness (10 µm), (0.65 mS cm −1 ), superior Young's modulus (66.8 GPa), excellent interface contact. pouch cells with practical Li||LiNi 0.8 Co 0.1 Mn O 2 configuration an ultrahigh volumetric density 1018 Wh L performance. exhibits great promise for SSBs high

Language: Английский

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Tunneling Interpenetrative Lithium Ion Conduction Channels in Polymer-in-Ceramic Composite Solid Electrolytes

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(10), P. 6591 - 6603

Published: Feb. 29, 2024

Polymer-in-ceramic composite solid electrolytes (PIC–CSEs) provide important advantages over individual organic or inorganic electrolytes. In conventional PIC–CSEs, the ion conduction pathway is primarily confined to ceramics, while faster routes associated with ceramic–polymer interface remain blocked. This challenge two key factors: (i) difficulty in establishing extensive and uninterrupted interfaces due ceramic aggregation; (ii) are unresponsive conducting ions because of their inherent incompatibility. Here, we propose a strategy by introducing polymer-compatible ionic liquids (PCILs) mediate between ceramics polymer matrix. mediation involves polar groups PCILs interacting Li+ on surfaces as well interactions components chains. addresses aggregation issue, resulting uniform PIC–CSEs. Simultaneously, it activates interpenetrating channels that promote efficient transport across phase, interfaces, intervening pathways. Consequently, obtained PIC–CSEs exhibit high conductivity, exceptional flexibility, robust mechanical strength. A PIC–CSE comprising poly(vinylidene fluoride) (PVDF) 60 wt % PCIL-coated Li3Zr2Si2PO12 (LZSP) fillers showcasing an conductivity 0.83 mS cm–1, superior transference number 0.81, elongation ∼300% at 25 °C could be produced meter-scale. Its lithium metal pouch cells show energy densities 424.9 Wh kg–1 (excluding packing films) puncture safety. work paves way for designing commercial viability.

Language: Английский

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Computational approach inspired advancements of solid-state electrolytes for lithium secondary batteries: from first-principles to machine learning

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(6), P. 3134 - 3166

Published: Jan. 1, 2024

The utilization of computational approaches at various scales, including first-principles calculations, MD simulations, multi-physics modeling, and machine learning techniques, has been instrumental in expediting the advancement SSEs.

Language: Английский

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