Microchemical Journal, Journal Year: 2025, Volume and Issue: unknown, P. 113498 - 113498
Published: March 1, 2025
Language: Английский
Journal of Energy Storage, Journal Year: 2023, Volume and Issue: 74, P. 109405 - 109405
Published: Oct. 27, 2023
Language: Английский
Citations
46
Chemical Society Reviews, Journal Year: 2024, Volume and Issue: unknown
Published: Jan. 1, 2024
Covalent organic frameworks (COFs) have gained considerable attention due to their design possibilities as the molecular building blocks that can stack in an atomically precise spatial arrangement.
Language: Английский
Citations
25
Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 17(1)
Published: Dec. 11, 2024
Proton-conducting materials have attracted considerable interest because of their extensive application in energy storage and conversion devices. Among them, metal-organic frameworks (MOFs) present tremendous development potential possibilities for constructing novel advanced proton conductors due to special advantages crystallinity, designability, porosity. In particular, several design strategies the structure MOFs opened new doors advancement MOF conductors, such as charged network construction, ligand functionalization, metal-center manipulation, defective engineering, guest molecule incorporation, pore-space manipulation. With implementation these strategies, proton-conducting developed significantly profoundly within last decade. Therefore, this review, we critically discuss analyze fundamental principles, methods targeted at improving conductivity through representative examples. Besides, structural features, conduction mechanism behavior are discussed thoroughly meticulously. Future endeavors also proposed address challenges practical research. We sincerely expect that review will bring guidance inspiration further motivate research enthusiasm materials.
Language: Английский
Citations
25
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Dec. 4, 2024
Abstract 2D architectures and superior physiochemical properties of MXene offer an exciting opportunity to develop a new class polymer electrolyte membranes by controlling the stacking behavior nanosheets. However, assembling nanosheets into macroscopic stable high‐performance proton conductors is challenging. Here, general strategy reported for achieving MXene‐based heterogeneous via crosslinked cellulose nanofiber/sodium alginate (CNF/SA). Through coordination calcium ions with 1D CNF/SA, abundant hydrogen‐bonding networks are firmly locked network, meanwhile, chains transformed from randomly arranged state long‐range ordered arrangement, such molecular channels collaborate tightly‐stacked jointly guide efficient conduction. Thus, as‐built CNF/SA/MXene (CSM) composite membrane exhibits mechanical (164.7 MPa), conductivity (45.4 mS cm −1 ), power density (49.5 mW −2 low open circuit voltage (OCV) decay rate (0.4 mV h ). The design principle material anchoring through ionic‐cross‐linking mixed‐dimensional assembly can inspire synthesis various ion exchange filtration, transport, sieving, more.
Language: Английский
Citations
15
Energy & Fuels, Journal Year: 2024, Volume and Issue: 38(8), P. 6613 - 6643
Published: April 2, 2024
High temperature proton exchange membrane fuel cells (HT-PEMFCs) are a promising energy conversion technology due to their quick reaction kinetics, high tolerance CO impurities, and ease of heat water management. Nevertheless, the practical implementation this is limited since traditional membranes (PEMs) exhibit significantly reduced performance at temperatures low humidity. In extreme situation, researchers have concentrated on investigating new through creation novel polymers fillers or by suggesting sophisticated modification processes, with goal attaining conductivity, stable mechanical properties, tremendous tolerance. This Review focuses latest advancements in four PEM domains: (1) perfluorosulfonic acid (PFSA)-based PEMs; (2) aromatic polymer-based (3) polybenzimidazole (PBI)-based (4) polymer intrinsic microporosity (PIM)-based PEMs. We describe provide an overview preparation methods, mechanistic analysis, core characteristics (proton conductivity peak power density) aforementioned materials. Furthermore, prospective research paths challenges development PEMs toward applications also suggested.
Language: Английский
Citations
12
Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(16), P. 8182 - 8201
Published: Jan. 1, 2024
Covalent organic frameworks (COFs) have emerged as promising materials for ion conduction due to their highly tunable structures and excellent electrochemical stability. This review paper explores the mechanisms of in COFs, focusing on how these facilitate transport across ordered structures, which is crucial applications such solid electrolytes batteries fuel cells. We discuss design strategies employed enhance conductivity, including pore size optimization, functionalization with ionic groups, incorporation solvent molecules salts. Additionally, we examine various ion-conductive particularly energy storage conversion technologies, highlighting recent advancements future directions this field. aims provide a comprehensive overview current state research offering insights into potential COFs considering not only fundamental studies but also practical perspectives advanced devices.
Language: Английский
Citations
12
Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 5, 2025
Although there has been some recent interest in the proton conductivity (σ) of highly stable carboxyl metal–organic frameworks (MOFs) made tetravalent metal ions, given their potential applications fuel cells and electrochemical sensing, research on MOFs constructed by hafnium(IV) ions needs to be expanded significantly. Based this, we used two common easily prepared phenylpoly(carboxylic acid) ligands, 1,2,4-phenyltricarboxylic acid 1,2,4,5-phenyltetracarboxylic acid, react with hafnium tetrachloride, respectively, creating porous hafnium(IV)-based MOFs, UiO-66-COOH-Hf (1) UiO-66-(COOH)2-Hf (2), same structure as UiO-66-Hf but different numbers free carboxylic groups. A series stability assays revealed that had excellent structural rigidity, including thermal water stability. More crucially, alternating current impedance experiments demonstrate σ varies positively humidity temperature, reaching up 10–3 S·cm–1 (1: 2.83 × 2: 4.35 S·cm–1) under right conditions (98% relative 100 °C). The latter roughly doubles former, which is due difference number groups, confirmed analysis conduction mechanism investigation. high intrinsic lays a solid foundation for future application affords new inspiration developing high-performance proton-conductive materials.
Language: Английский
Citations
1
Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 9, 2025
Abstract Advancing anhydrous proton‐conducting materials is essential for the fabrication of high‐temperature (>373 K) polymer electrolyte membrane fuel cells (HT‐PEMFCs) and remains a significant challenge. Herein, halogen‐bonded organic frameworks linked by [N···I··N] + interactions are reported as outstanding conductive materials. By incorporating carbazole groups into monomers, two highly crystalline ( XOF‐CSP/CTP ) constructed. These XOFs exhibit high intrinsic conductivity (σ = 1.22 × 10 −3 S cm −1 under conditions. Doping with H 3 PO 4 allows nitrogen sites I on pore walls to stabilize tightly confine network within porous framework through hydrogen bonding, thereby enhancing proton conditions 1.02 −2 ). Temperature‐dependent curves theoretical calculations indicate that transport governed low‐energy barrier hopping mechanism. excellent stability maintain across broad temperature range. This work provides new platform designing potential exchange membranes.
Language: Английский
Citations
1
Advanced Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 24, 2025
The application of in situ and operando spectroscopic techniques has significantly advanced the understanding reticular materials, particularly metal-organic frameworks (MOFs) covalent organic (COFs). These offer real-time insights into dynamic structural, electronic, chemical changes that occur within these materials during various processes, such as catalysis, sorption, material synthesis. This review offers a comprehensive overview key used to investigate formation, functionalization, catalytic behavior materials. How have elucidated roles active sites, reaction intermediates, structural transformations under conditions, especially single-site electrocatalysis, photocatalysis, is highlighted. also discusses challenges opportunities lie ahead integrating methods with aiming foster further innovation design versatile
Language: Английский
Citations
1
Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown
Published: March 8, 2025
The design and preparation of super proton conducting metal–organic frameworks (MOFs) are great significance for the advancement exchange membrane fuel cells (PEMFCs). An effective approach to increase sulfonic acid density control hydrogen bonding networks within MOFs involves incorporating polymer chains that contain groups into their pore structures. In this work, we report in situ synthesis a polyvinyl (PVS) cross-linked nanopores MIL-101-SO3H, resulting PVS@MIL-101-SO3H composite. This composite maintains high conductivity pure water vapor, achieving peak 2.57 × 10–2 S·cm–1 at 85 °C 98% relative humidity (RH). Significantly, markedly increases aqua-ammonia environments, reaching 1.21 10–1 under 1.0 M vapor 100 °C, approximately five times higher than observed vapor. Moreover, exhibits excellent stability. Therefore, study offers an efficacious enhancing performance aqua-ammonia-assisted solid-state proton-conducting materials.
Language: Английский
Citations
1