Mechanisms of the Accelerated Li⁺ Conduction in MOF‐Based Solid‐State Polymer Electrolytes for All‐Solid‐State Lithium Metal Batteries

Advanced Materials, Год журнала: 2024, Номер 36(32)

Опубликована: Апрель 5, 2024

Solid polymer electrolytes (SPEs) for lithium metal batteries have garnered considerable interests owing to their low cost, flexibility, lightweight, and favorable interfacial compatibility with battery electrodes. Their soft mechanical nature compared solid inorganic give them a large advantage be used in pressure solid-state batteries, which can avoid the cost weight of cages. However, application SPEs is hindered by relatively ionic conductivity. In addressing this limitation, enormous efforts are devoted experimental investigation theoretical calculations/simulation new classes. Recently, metal-organic frameworks (MOFs) been shown effective enhancing ion transport SPEs. mechanisms Li

Язык: Английский

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Pathways for MXenes in Solving the Issues of Zinc‐Ion Batteries: Achievements and Perspectives

Advanced Functional Materials, Год журнала: 2024, Номер 34(28)

Опубликована: Март 11, 2024

Abstract Zinc‐ion batteries (ZIBs) have become a global research hotspot in recent years due to their eco‐friendliness, safety, abundant resources, and low cost. However, some significant challenges seriously affect overall performance, thus hindering further development practical applications. Recently, multifunctional adjustable 2D carbides nitrides (MXenes) are extensively used for the modification of ZIBs, fruitful achievements achieved. In order make systematic understanding these studies, it is highly desirable provide an overview MXenes based on methods action mechanisms. this review, basic introduction ZIBs presented main approaches solving issues discussed detail, including activation composite strategies cathode, interface engineering, structural optimization, zinc metal‐free anode strategy anode, solid‐state electrolyte, functionalized separator. Importantly, functions related mechanisms various components analyzed depth. Finally, pathways summarized, future directions prospected.

Язык: Английский

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Constructing host–guest recognition electrolytes promotes the Li⁺ kinetics in solid-state batteries

Energy & Environmental Science, Год журнала: 2024, Номер 17(2), С. 780 - 790

Опубликована: Янв. 1, 2024

Ti-MOFs with synergetic various sites are designed to serve as a “host” platform for GPE tune the electrolyte properties. This unique system can improve Li + ion conduction, mechanical strength and ability withstand high voltage.

Язык: Английский

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Understanding the Sodium Storage Behavior of Closed Pores/Carbonyl Groups in Hard Carbon

ACS Nano, Год журнала: 2024, Номер 18(32), С. 21491 - 21503

Опубликована: Июль 31, 2024

Hard carbon (HC) is a promising anode material for sodium-ion batteries. However, the intrinsic relationship between closed pores/surface groups and sodium storage performance has been unclear, leading to difficulties in targeted regulation. In this study, renewable tannin extracts were used as raw materials prepare HC anodes with abundant tunable pores carbonyl through pyrolytic modulation strategy. Combining ex situ characterizations reveals that are regulated by process. Further, it demonstrated plateau region mainly contributed pores; highly stable fluorine-rich solid electrolyte interphase compositions produced carbonyl-induced interfacial catalysis. The optimized displays good cycling stability, exhibiting high reversible capacity (360.96 mAh g−1) at 30 mA g−1 retention of up 94% after 500 cycles 1 A g−1. Moreover, full battery assembled Na3V2(PO4)3/C demonstrates performance. These findings provide fresh knowledge structural design high-performance mechanism HC.

Язык: Английский

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Manipulating Local Chemistry and Coherent Structures for High-Rate and Long-Life Sodium-Ion Battery Cathodes

ACS Nano, Год журнала: 2024, Номер 18(20), С. 13150 - 13163

Опубликована: Май 10, 2024

Layered sodium transition-metal (TM) oxides generally suffer from severe capacity decay and poor rate performance during cycling, especially at a high state of charge (SoC). Herein, an insight into failure mechanisms within high-voltage layered cathodes is unveiled, while two-in-one tactic localization coherent structures devised to improve structural integrity Na+ transport kinetics, elucidated by density functional theory calculations. Elevated Jahn–Teller [Mn3+O6] concentration on the particle surface sodiation, coupled with intense interlayer repulsion adverse oxygen instability, leads irreversible damage near-surface structure, as demonstrated X-ray absorption spectroscopy in situ characterization techniques. It further validated that skeleton substantially strengthened through electronic structure modulation surrounding oxygen. Furthermore, optimized diffusion effectively attainable via regulating intergrown structures, successfully achieved Zn2+ inducer. Greatly, good redox reversibility initial Coulombic efficiency 92.6%, impressive capability (86.5 mAh g–1 70.4% retention 10C), enhanced cycling stability (71.6% after 300 cycles 5C) are exhibited P2/O3 biphasic cathode. believed profound comprehension will herald fresh perspectives develop cathode materials for sodium-ion batteries.

Язык: Английский

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Strategies to regulate the interface between Li metal anodes and all-solid-state electrolytes

Materials Chemistry Frontiers, Год журнала: 2024, Номер 8(6), С. 1421 - 1450

Опубликована: Янв. 1, 2024

In this review, the problems of interface between lithium metal anodes and all-solid-state electrolytes are explored modification strategies to solve these summarized.

Язык: Английский

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Lithium Superionic Conductive Nanofiber-Reinforcing High-Performance Polymer Electrolytes for Solid-State Batteries

Journal of the American Chemical Society, Год журнала: 2024, Номер 146(17), С. 11897 - 11905

Опубликована: Март 28, 2024

Although composite solid-state electrolytes (CSEs) are considered promising ionic conductors for high-energy lithium metal batteries, their unsatisfactory conductivity, low mechanical strength, poor thermal stability, and narrow voltage window limit practical applications. We have prepared a new superionic conductor (Li-HA-F) with an ultralong nanofiber structure ultrahigh room-temperature conductivity (12.6 mS cm–1). When it is directly coupled typical poly(ethylene oxide)-based solid electrolyte, the Li-HA-F nanofibers endow resulting CSE high (4.0 × 10–4 S cm–1 at 30 °C), large Li+ transference number (0.66), wide (5.2 V). Detailed experiments theoretical calculations reveal that supplies continuous dual-conductive pathways results in stable LiF-rich interfaces, leading to its excellent performance. Moreover, nanofiber-reinforced exhibits good heat/flame resistance flexibility, breaking strength (9.66 MPa). As result, Li/Li half cells fabricated exhibit stability over 2000 h critical current density of 1.4 mA cm–2. Furthermore, LiFePO4/Li-HA-F CSE/Li LiNi0.8Co0.1Mn0.1O2/Li-HA-F batteries deliver reversible capacities temperature range cycling

Язык: Английский

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A bipolar-type covalent organic framework on carbon nanotubes with enhanced density of redox-active sites for high-performance lithium-ion batteries

Energy & Environmental Science, Год журнала: 2024, Номер 17(15), С. 5451 - 5460

Опубликована: Янв. 1, 2024

A COF has been successfully fabricated onto carbon nanotubes as a cathode in LIBs with high energy density of 737.5 W h g −1 , representing the highest one among thus far reported LIB cathodes.

Язык: Английский

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Advanced Composite Solid Electrolyte Architecture Constructed with Amino‐Modified Cellulose and Carbon Nitride via Biosynthetic Avenue

Advanced Functional Materials, Год журнала: 2024, Номер 34(24)

Опубликована: Фев. 16, 2024

Abstract Polyethylene oxide (PEO) solid electrolytes are regarded as a promising candidate for all‐solid‐state lithium batteries owing to their high safety and interfacial compatibility. However, PEO electrolyte is plagued by relatively weak structural strength unsatisfactory Li + conductivity. Herein, mechanically strong conductively favorable cellulosic scaffold of fabricated through amino (‐NH 2 ) modification g‐C 3 N 4 (CN) incorporation bacterial cellulose (BC) under microbial circumstance. The biologically ‐NH modified BC (B‐NBC) entangled with CN nanosheets (CN@B‐NBC) an in situ secretion nanocellulose followed hydrogen bond‐induced self‐assembly. groups from B‐NBC weaken the complexation its counterpart, thus facilitating release more free . C‐N covalence extra lone electrons further strengthens skeleton meanwhile offers sufficient anchors migration. After infiltrating LiTFSI/PEO (LP), LP/CN@B‐NBC composite (CSE) exhibits transference number ionic Upon coupling LiFePO cathode, full battery remarkably specific capacity, superior rate capability, decent cycling stability. This work pioneers attempts chemical decoration ingredient architecture CSE aid bottom‐up biosynthetic avenue.

Язык: Английский

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Neuron‐Like Silicone Nanofilaments@Montmorillonite Nanofillers of PEO‐Based Solid‐State Electrolytes for Lithium Metal Batteries with Wide Operation Temperature

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(34)

Опубликована: Апрель 22, 2024

Poly(ethylene oxide) (PEO)-based composite solid electrolytes (CSEs) are promising to accelerate commercialization of solid-state lithium metal batteries (SSLMBs). Nonetheless, this is hindered by the CSEs' limited ion conductivity at room temperature. Here, we propose design, synthesis, and application bioinspired neuron-like nanofillers for PEO-based CSEs. The superhydrophobic synthesized controllably grafting silicone nanofilaments onto montmorillonite nanosheets. Compared various reported fillers, can greatly improve ionic (4.9×10

Язык: Английский

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