Microporous Materials in Polymer Electrolytes: The Merit of Order

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(35)

Published: June 25, 2024

Solid-state batteries (SSBs) have garnered significant attention in the critical field of sustainable energy storage due to their potential benefits safety, density, and cycle life. The large-scale, cost-effective production SSBs necessitates development high-performance solid-state electrolytes. However, manufacturing relies heavily on advancement suitable Composite polymer electrolytes (CPEs), which combine advantages ordered microporous materials (OMMs) electrolytes, meet requirements for high ionic conductivity/transference number, stability with respect electrodes, compatibility established processes, cost-effectiveness, making them particularly well-suited mass SSBs. This review delineates how structural ordering dictates fundamental physicochemical properties OMMs, including ion transport, thermal transfer, mechanical stability. applications prominent OMMs are critically examined, such as metal-organic frameworks, covalent organic zeolites, CPEs, highlighting facilitates fulfillment property requirements. Finally, an outlook is provided, exploring CPEs can be enhanced through dimensional design importance uncovering underlying "feature-function" mechanisms various CPE types underscored.

Language: Английский

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Tailoring the Electrode‐Electrolyte Interface for Reliable Operation of All‐Climate 4.8 V Li||NCM811 Batteries

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(44)

Published: Aug. 6, 2024

Abstract Combining high‐voltage nickel‐rich cathodes with lithium metal anodes is among the most promising approaches for achieving high‐energy‐density batteries. However, current electrolytes fail to simultaneously satisfy compatibility requirements anode and tolerance ultra‐high voltage NCM811 cathode. Here, we have designed an ultra‐oxidation‐resistant electrolyte by meticulously adjusting composition of fluorinated carbonates. Our study reveals that a solid‐electrolyte interphase (SEI) rich in LiF Li 2 O constructed on through synergistic decomposition solvents PF 6 − anion, facilitating smooth deposition. The superior oxidation resistance our enables Li||NCM811 cell deliver capacity retention 80 % after 300 cycles at ultrahigh cut–off 4.8 V. Additionally, pioneering V‐class pouch energy density 462.2 Wh kg −1 stably 110 under harsh conditions high cathode loading (30 mg cm −2 ), low N/P ratio (1.18), lean (2.3 g Ah ).

Language: Английский

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Host–Guest Inversion Engineering Induced Superionic Composite Solid Electrolytes for High-Rate Solid-State Alkali Metal Batteries

Nano-Micro Letters, Journal Year: 2025, Volume and Issue: 17(1)

Published: March 17, 2025

Abstract Composite solid electrolytes (CSEs) are promising for solid-state Li metal batteries but suffer from inferior room-temperature ionic conductivity due to sluggish ion transport and high cost expensive active ceramic fillers. Here, a host–guest inversion engineering strategy is proposed develop superionic CSEs using cost-effective SiO 2 nanoparticles as passive hosts poly(vinylidene fluoride-hexafluoropropylene) (PVH) microspheres polymer guests, forming an unprecedented “polymer guest-in-ceramic host” (i.e., PVH-in-SiO ) architecture differing the traditional “ceramic guest-in-polymer host”. The exhibits excellent Li-salt dissociation, achieving high-concentration free + . Owing low diffusion energy barriers coefficient, thermodynamically kinetically favorable migrate at /PVH interfaces. Consequently, delivers exceptional of 1.32 × 10 −3 S cm −1 25 °C (vs typically −5 –10 −4 high-cost ceramics), achieved under ultralow residual solvent content 2.9 wt% 8–15 in other CSEs). Additionally, electrochemically stable with anode various cathodes. Therefore, demonstrates high-rate cyclability LiFePO 4 |Li full cells (92.9% capacity-retention 3C after 300 cycles °C) outstanding stability high-mass-loading (9.2 mg high-voltage NCM622 (147.1 mAh g ). Furthermore, we verify versatility by fabricating Na-ion K-ion-based similarly promotions conductivity. Our offers simple, low-cost approach large-scale application beyond.

Language: Английский

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Designing Organic–Inorganic Hybrid Materials to Construct a Complementary Interface with Versatility for Li–S Batteries

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 3, 2024

Abstract Polysulfides shuttle and lithium dendrites growth greatly restricts the practical application of lithium–sulfur batteries (LSBs). A rational designed separator combined polysulfide catalyst regulator can achieve effect killing two birds with one stone. Herein, organic–inorganic hybrid materials are to construct a complementary interface for LSBs. Specially, kinds covalent organic frameworks (COF) different pore size in situ grown on MXene surface by forming Ti–N bond. The high electronic conductivity abundant functional groups allow it work as effectively accelerate polysulfides conversion, while COF be used an ion calibrator guide homogeneous deposition. As expected, MXene@COF (MCOF) integrated realizes advantages that enable Li||Li symmetric cell surprisingly stable plating/stripping process up 4750 h at 10 mA cm −2 . Furthermore, assembled LSBs exhibit capacities 584/563 mAh g −1 3 C low‐capacity decay rates 0.042%/0.048% per cycle after 1000 cycles 1 C. This proposes strategy based composites layer, which is great significance construction high‐performance

Language: Английский

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Localized high concentration polymer electrolyte enabling room temperature solid-state lithium metal batteries with stable LiF-rich interphases

Energy storage materials, Journal Year: 2024, Volume and Issue: 71, P. 103570 - 103570

Published: June 15, 2024

Language: Английский

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Advanced Polymer Materials for Protecting Lithium Metal Anodes of Liquid‐State and Solid‐State Lithium Batteries

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: June 10, 2024

Abstract Lithium metal batteries (LMBs) are considered as one type of the most promising next‐generation energy storage devices with high‐energy‐density, and stabilizing lithium anodes (LMAs) to overcome LMBs’ safety concerns performance degradation has attracted extensive attention. Introducing advanced polymer materials into critical components LMBs proven be an effective approach for LMAs toward practical application LMBs. In addressing lack a timely review on emerging progress in LMAs, comprehensive article summarizing recent developments multiscale cellulose materials, including micron (MC) nanocellulose (NC), is reviewed. First, basic structures cellulose, characteristics comparison, development history introducing presented. Furthermore, roles functional mechanisms various summarized. A general conclusion perspective current limitations future research directions cellulose‐based stable proposed. The aim this not only summarize but also lighten pathways realizing application.

Language: Английский

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Multi‐Objective Optimization of Ionic Polymer Electrolytes for High‐Voltage Fast‐Charging and Versatile Lithium Batteries

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

Published: March 17, 2025

Abstract Designing ionic polymer electrolytes (IPEs) for high‐voltage and fast‐charging lithium batteries involves searching in a highly complex discrete chemical space. Traditional material discovery processes struggle with this complexity due to high costs long evaluation time. A kernel‐based Bayesian optimization is described complete the multi‐objective by considering conductivity, electrochemical stability, discharge capacity simultaneously. According recommender based on union set of acquisition functions, promising IPEs through three iterations only 2.8% space targeted. The achieved metal exhibit performance ultrahigh cutoff voltage NCM811 (LiNi 0.8 Co 0.1 Mn O 2 , 4.8 V) LNMO 0.5 1.5 4 4.92 V). To further extend versatility diminish cost associated glove‐box environment, an aqueous lithium‐ion battery developed introducing water molecules coupled Li Ti 5 12 ||LiMn strong hydrogen bonding network formed between rigid‐rod polyelectrolyte embedded molecules, which effectively suppresses reactivity, meanwhile boosting conductivity. This work reveals innovative that handles multi‐targets discontinuous parameter space, offering critical insights address challenges property advanced versatile batteries.

Language: Английский

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Reconfiguring Polymer Chain for Regulating Na⁺ Solvation Structure in a Gel Polymer Electrolyte toward Sodium Metal Batteries

ACS Energy Letters, Journal Year: 2025, Volume and Issue: unknown, P. 2007 - 2016

Published: March 28, 2025

Language: Английский

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Photoexcitation‐Enhanced High‐Ionic Conductivity in Polymer Electrolytes for Flexible, All‐Solid‐State Lithium‐Metal Batteries Operating at Room Temperature

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 29, 2024

Abstract Designing solid polymer electrolytes (SPEs) with high ionic conductivity for room‐temperature operation is essential advancing flexible all‐solid‐state energy storage devices. Innovative strategies are urgently required to develop SPEs that safe, stable, and high‐performing. In this work, we introduce photoexcitation‐modulated heterojunctions as catalytically active fillers within SPEs, guided by photocatalytic design principles, meanwhile employ natural bacterial cellulose improve the compatibility poly(ethylene oxide), coordination environment of lithium salts, optimize both ion transport mechanical properties. situ photothermal experiments theoretical calculations reveal strong photogenerated electric field produced trace oxide) under photoexcitation significantly enhances salt dissociation, increasing concentration mobile Li + . This results in a substantial increase conductivity, reaching 0.135 mS cm −1 at 25 °C, transference number 0.46. The lithium‐metal pouch cells exhibit an impressive discharge capacity 178.8 mAh g even after repeated bending folding, demonstrate exceptional long‐term cycling stability, retaining 86.7 % their initial 250 cycles 1 C (25 °C). research offers novel approach developing high‐performance batteries.

Language: Английский

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Sulfolane Plasticized PVDF-HFP/PEO High-Voltage Gel Polymer Electrolyte

Energy & Fuels, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 8, 2025

The poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) is expected to prepare electrolytes with wide electrochemical window owing its excellent antioxidant capability. However, the inert lithium ion conduction of C–C skeleton severely limits application. In this work, high-voltage-resistant sulfolane (SL) used as a plasticizer into PVDF-HFP gel electrolytes. Moreover, alleviate incompatibility SL metal by strong dipole–dipole interaction between poly(ethylene oxide) (PEO) and SL, plasticized PVDF-HFP/PEO polymer electrolyte (PPS-GPE) was achieved, which exhibits high ionic conductivity 1.67 × 10–4 S cm–1 an stability 4.8 V. assembled Li||LiCoO2 cells show average discharge capacity 153 mA h g–1 3.0 4.4 V, retention 77% within 400 cycles at 0.2 C. This work provides new strategy for development high-voltage, energy density, safety batteries.

Language: Английский

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