Published: Jan. 1, 2024
Language: Английский
Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(36)
Published: June 19, 2024
Fluoroalkyl-grafted polyoxometalate nanoclusters are used as supramolecular additives to precisely modify the ionic domains of Nafion, which can increase proton conductivity and selectivity simultaneously. The resulting hybrid membranes show significantly enhanced power density in fuel cells improved energy efficiency vanadium flow batteries.
Language: Английский
Citations
13
Journal of Membrane Science, Journal Year: 2024, Volume and Issue: 701, P. 122711 - 122711
Published: March 28, 2024
Language: Английский
Citations
10
ACS Energy Letters, Journal Year: 2025, Volume and Issue: unknown, P. 1958 - 1998
Published: March 27, 2025
The development of solid-state proton conductors (SSPCs) is significant interest for their deployment as exchange membranes in fuel cell (PEMFC) technology. aqueous medium synthesis with ample intrinsic sources has made crystalline polyoxometalates (POMs) promising SSPCs over others. Herein, we aim to showcase the solitary POMs and hybrids (with polymers MOFs/COFs) by organizing them based on approaches taken up (intrinsic or extrinsic) install various protonic while positioning within specific components POM frameworks. Particular attention paid a critical discussion whether conductivity purely combination other ionic (majorly originating from charge balancing counterions) thus recommend terminology be used. "Critical Discussion" section provides in-depth insights which are often overlooked, future recommendations "Future Outlook".
Language: Английский
Citations
2
Polymer, Journal Year: 2024, Volume and Issue: 307, P. 127241 - 127241
Published: June 3, 2024
Language: Английский
Citations
8
Science China Chemistry, Journal Year: 2025, Volume and Issue: unknown
Published: March 19, 2025
Language: Английский
Citations
1
Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown
Published: April 7, 2025
Abstract Precisely constructing the well‐defined proton transport platform and studying its behavior are of great importance yet remain challenging. Here, a Zr‐BTB‐X nanosheet via post‐synthetic modifying Zr‐BTB with terephthalic acid (BDC) trimesic (BTC) is developed, which coordinate to unsaturated Zr₆ clusters. The increased –COOH groups endow Zr‐BTB‐BTC nanosheets significant improvement in conductivity, achieving 490.9 mS cm −1 at 80 °C 100% RH, compared 2.19 for original nanosheets. Density functional theory calculations water adsorption studies reveal that formation enriched networks induced by facilitates efficient dissociation reduces barrier. assembled lamellar membrane, retaining high conductivity properties nanosheet, reaches 242.4 RH. It also delivers superior performance exchange membrane fuel cell (PEMFC), ultrahigh peak power (0.91 W −2 ), maximum current density (3.59 A good durability (100 h OCV test).
Language: Английский
Citations
1
Chemical Communications, Journal Year: 2024, Volume and Issue: 60(56), P. 7113 - 7123
Published: Jan. 1, 2024
The progress of proton exchange membrane fuel cells (PEMFCs) in the clean energy sector is notable for its efficiency and eco-friendliness, although challenges remain terms durability, cost power density.
Language: Английский
Citations
6
Polymer, Journal Year: 2024, Volume and Issue: 299, P. 126951 - 126951
Published: March 20, 2024
Language: Английский
Citations
5
Inorganic Chemistry Frontiers, Journal Year: 2024, Volume and Issue: 11(14), P. 4459 - 4468
Published: Jan. 1, 2024
Herein, a composite proton exchange membrane is proposed to realize durable hydrogen fuel cells by incorporating polyphenolamine treated ZrO 2 and ePTFE into perfluorosulfonic acid (PFSA) form 3D-reinforced bonding network.
Language: Английский
Citations
4
Angewandte Chemie, Journal Year: 2024, Volume and Issue: 136(36)
Published: June 19, 2024
Abstract Proton exchange membranes with high selectivity are urgently required in energy and electronic technologies. Although Nafion represents the state‐of‐the‐art commercial proton membrane material,it still suffers from permeation of undesirable substances, like hydrogen fuel cells vanadium ions redox flow batteries, due to unmatched sizes between its ionic domains (3–5 nm) these substances. In this work, we present a supramolecular modification strategy that simultaneously enhances conductivity Nafion. We employ fluoroalkyl‐grafted polyoxometalate (POMs) nanoclusters as additives modify via co‐assembly. These POMs can precisely robustly decorate at domains, their fluoroalkyl chains anchoring into perfluorinated matrix while inorganic clusters stay regions. The hybrid membranes, continuous hopping sites nanoscale steric hindrance offered by POMs, exhibit 56 % increase 100 improvement proton/vanadium selectivity. This leads significantly enhanced power density efficiency respectively. results underscore intriguing potential molecular cluster improving functions ion‐conducting membranes.
Language: Английский
Citations
3