Molten Guest‐Mediated Metal–Organic Frameworks Featuring Multi‐Modal Supramolecular Interaction Sites for Flame‐Retardant Superionic Conductor in All‐Solid‐State Batteries

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(27)

Published: April 4, 2024

Abstract The development of solid‐state electrolytes (SSEs) with outstanding comprehensive performance is currently a critical challenge for achieving high energy density and safer batteries (SSBs). In this study, strategy nano‐confined in situ solidification proposed to create novel category molten guest‐mediated metal–organic frameworks, named MGM–MOFs. By embedding the newly developed crystalline organic electrolyte (ML 20 ) into nanocages anionic MOF–OH, MGM–MOF–OH, characterized by multi‐modal supramolecular interaction sites continuous negative electrostatic environments within nano‐channels, achieved. These nanochannels promote ion transport through successive hopping Li + between neighbored suppress anion movement chemical constraint hydroxyl‐functionalized pore wall. This results remarkable conductivity 7.1 × 10 −4 S cm −1 transference number 0.81. Leveraging these advantages, SSBs assembled MGM–MOF–OH exhibit impressive cycle stability specific 410.5 Wh kg anode cathode under constrained conditions various working temperatures. Unlike flammable traditional MOFs, demonstrates robustness harsh conditions, including ignition, voltage, extended humidity.

Language: Английский

---

Advances and Challenges of Porous Structure on Solid–Liquid Interfaces in Polyanionic Sodium‐Ion Batteries

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(42)

Published: Aug. 21, 2024

Abstract The sodium‐ion batteries (SIBs) are expected to be the substitute for lithium‐ion (LIBs) because of their low cost, high abundance, and similar working mechanism. Among them, polyanion‐type electrodes show great application prospects due superior ion diffusion channels structural stability. However, there still many scientific issues that need thoroughly investigated, especially formation mechanism, stability, interface impedance solid–liquid interfaces. Therefore, it is significance systematically study mechanism reaction electrochemical behavior, promote further practical SIBs. Fortunately, polyanionic can effectively improve transport dynamics interfacial stability interfaces through constructing porous structure, surface modification, electrolyte strategies, thus improving cycle rate performance. This review discusses characteristics mechanisms electrode/electrolyte (EEI), as well behavior in structures with different dimensions. Furthermore, this covers materials kinetics EEI. In particular, highlights various strategies employed comprehend interplay among chemistry, preparation methods, ultimately affect properties

Language: Английский

---

Preformation of Insoluble Solid‐Electrolyte Interphase for Highly Reversible Na‐Ion Batteries

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

Published: July 25, 2024

Abstract A stable solid‐electrolyte interphase (SEI) is crucial for cycling reversibility of Na‐ion batteries by mitigating continuous side reactions. So far, the severe SEI dissolution leads to low Coulombic efficiency (CE) and short cycle life. Meanwhile, quantified relationship between components their solubility remains unclear. In this work, we establish direct correlation solubility, quantify that organic‐rich 3.26 times inorganic‐rich SEI. We further propose a feasible strategy preform insoluble demonstrate practical hard carbon (HC)||NaMn 0.33 Fe Ni O 2 full cell in commercial electrolyte 1 M NaPF 6 propylene carbonate (PC) with 80.0 % capacity retention 900 cycles, achieve record‐high average CE 99.95 cell. This study provides an effective preforming suppress its towards highly reversible batteries.

Language: Английский

---

Enhancing the Filler Utilization of Composite Gel Electrolytes via In Situ Solution‐Processable Method for Sustainable Sodium‐Ion Batteries

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

Published: Oct. 24, 2024

Abstract The composite gel electrolyte (CGE), which combines the advantages of inorganic solid‐state electrolytes and solid polymer electrolytes, is regarded as ultimate candidate for constructing batteries with high safety superior electrode‐electrolyte interface contact. However, ubiquitous agglomeration nanofillers results in low filler utilization, seriously reduces structural uniformity ion transport efficiency, thus restricting development consistent durable batteries. Herein, a solution‐processable method to situ construct CGE utilization introduced. homogeneous metal–organic framework fillers contribute uniform ionic electronic filed distribution, realizing stable interface. Consequently, achieves an ultra‐long lifespan 10 000 cycles capacity retention 80.2%. This work provides guidance high‐performance CGEs electrochemical energy‐storage devices.

Language: Английский

---

Research Progress on the Mechanisms of MOF/COF and Their Derivatives in Zinc−Ion Batteries

Energy storage materials, Journal Year: 2025, Volume and Issue: unknown, P. 104220 - 104220

Published: March 1, 2025

Language: Английский

---

Synergistic Dual-Polar-Functionalized Metal–Organic Framework-Modified Separator for Stable and High-Performance Sodium Metal Batteries

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: April 15, 2025

Sodium metal, regarded as an ideal anode material for high-energy-density rechargeable sodium metal batteries (SMBs), faces critical challenges, such sluggish Na+ transport kinetics and uncontrolled dendritic growth, which severely hinder its cycling stability practical applications. Herein, the well-designed, multifunctional separator, UFS2@GF, constructed using metal-organic frameworks functionalized with fluorinated (-F) sulfonic acid (-SO3H) groups, synergistically provides more nucleation sites deposition, thereby reducing overpotential achieving uniform deposition. The inorganic-rich solid electrolyte interphase induced by UFS2 facilitates a flux enhances charge transfer efficiency. Structural characterization density functional theory calculations further demonstrate that introduction of abundant sodiophilic provided -F -SO3H significantly energy barriers migration within framework, leading to higher transference number, superior ionic conductivity, accelerated ion transport. Because these synergistic effects, symmetric cell UFS2@GF achieves stable performance, enabling over 2500 h at 0.25 mA cm-2 while delivering excellent specific capacity 87.3 g-1 10C in Na∥Na3V2(PO4)3 cells. These results highlight role group strategies addressing limitations SMBs.

Language: Английский

---

MOF-Derived Fe2CoSe4@NC and Fe2NiSe4@NC Composite Anode Materials towards High-Performance Na-Ion Storage

Inorganics, Journal Year: 2024, Volume and Issue: 12(6), P. 165 - 165

Published: June 12, 2024

Binary transition metal selenides (BTMSs) are more promising than single (TMS) as anode materials of sodium-ion batteries (SIBs). However, it is still very challenging to prepare high-performance BTMSs in the pure phase, instead a mixture two TMSs. In this study, binary center-based MOF derived selenization strategy was developed iron–cobalt selenide (Fe2CoSe4@NC) and iron–nickel (Fe2NiSe4@NC) nanocomposites phase when wrapped with carbon layers. As material SIBs, Fe2CoSe4@NC exhibits higher long-term cycling performance Fe2NiSe4@NC, maintaining capacity 352 mAh g−1 after 2100 cycles at 1.0 A g−1, which ascribed percentage nanopores, larger lattice spacing, faster Na+ diffusion rate electrode former rather latter.

Language: Английский

---

Flame‐Retardant Polymer Electrolyte for Sodium‐Ion Batteries

Batteries & Supercaps, Journal Year: 2024, Volume and Issue: unknown

Published: July 26, 2024

Abstract Sodium‐ion batteries present an appealing option for large‐scale energy storage applications due to their high natural abundance and low production costs. However, the safety issue remains a major obstacle in current development, primarily owing use of liquid electrolytes (LEs), which can lead leakage combustion. To achieve both density enhanced safety, researchers are increasingly focusing on solid‐state (SSEs). Solid‐state polymer (SPEs) have garnered notable attention superior mechanical flexibility electrochemical stability. Nonetheless, traditional SPEs also undergo combustion decomposition under extreme conditions inherent flammability. Therefore, it is imperative conduct research design flame‐retardant order enhance reliability practical applications. This review provides comprehensive overview mechanisms underlying battery thermal runaway offers guidance designing with safety. In addition reviewing recent advancements sodium research, presents systematic classification introduction studies high‐safety electrolytes. Furthermore, delves into diverse perspectives approaches towards addressing battery, ultimately outlining future directions this particular field.

Language: Английский

---

Multicomponent Quasi-Solid-State Polymer Electrolyte Incorporating MOFs and Halloysite Nanotubes for Enhanced Sodium Metal Battery Performance

ACS Applied Energy Materials, Journal Year: 2024, Volume and Issue: 7(21), P. 10196 - 10202

Published: Oct. 31, 2024

Solid-state sodium metal batteries are among the most promising next-generation energy storage devices. However, developing competent solid-state electrolytes for these remains a significant challenge. Herein, we introduce design quasi-solid-state polymer electrolyte that enhances battery performance. This multicomponent electrolyte, designated PH-MSN-HNT, was synthesized by incorporating modified MOF particles and halloysite nanotubes (HNTs) into PVDF-HFP (PH) matrix. Due to synergistic effects of components, PH-MSN-HNT exhibits superior ion conductivity (>10–3 S cm–1) at room temperature, high Na+ transference number (0.79), wide electrochemical stability window (5.16 V). Furthermore, used as an assemble batteries, which demonstrate efficient dendrite suppression remarkable cycling performance with 98% capacity retention (108.6 mAh g–1 0.1 C) after 100 charge/discharge cycles over 1000 h.

Language: Английский

---

Metal-organic framework based composite polymer electrolytes with hierarchical pores and hydrogen bond network for efficient lithium-ion transport channels in solid-state batteries

Journal of Power Sources, Journal Year: 2025, Volume and Issue: 635, P. 236513 - 236513

Published: Feb. 16, 2025

Language: Английский

---