Effect of Ta–TiO2 Nanoparticles in Anion Exchange Membranes: Improved Hydroxide Ion Conductivity and Mechanical Strength for Alkaline Water Electrolysis Cells DOI Creative Commons
Ahmed Mohamed Ahmed Mahmoud, Kenji Miyatake,

Kaoru Tsujii

et al.

Macromolecular Chemistry and Physics, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 18, 2024

Abstract To improve the properties of quaternized QPAF‐4 copolymers as anion exchange membranes, compositing with hydrophilic Ta–TiO 2 particles are investigated. Flexible QPAF‐4/Ta–TiO composite membranes obtained using solution‐casting and die coating methods. Cross‐sectional scanning electron microscopy reveals that method produces a more homogenous uniform distribution in than method. The Ta‐TiO promotes suppression water absorbability dimensional swelling which is pronounced coated membranes. increase hydroxide ion conductivity to 116.9 mS cm −1 at 80 °C for die‐coated membrane, surpassing pristine membrane (92 ). survive 4 m KOH 1000 h, maintaining 96–112 (88–99% remaining) initial conductivity. All exhibit higher mechanical robustness (elongation >200%), optimized fabricated an alkaline electrolysis cell achieving 1.63 V 1.0 A −2 (75.5% efficiency).

Language: Английский

Influence of Differences in Bilateral Chain Structure on the Performance of Poly(aryl piperidine) Anion Exchange Membranes for Water Electrolysis DOI

Xunwang Tang,

Zongxue Yu, Junlei Tang

et al.

ACS Applied Polymer Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 8, 2025

As the core component of water electrolysis, anion-exchange membranes (AEMs) necessitate high ionic conductivity, favorable dimensional stability, and chemical stability. Nevertheless, current generation AEMs remains inadequate for achieving both conductivity long-term The side-chain strategy has been demonstrated to be an effective approach enhancing durability AEMs. In order achieve this objective, a series poly(aryl piperidine) were designed, featuring hydrophilic cationic side chains noncationic alkyl chains, with aim investigating impact grafting different on membrane properties. particular, PTBPA–BMB–OH displayed OH– (108.3 mS cm–1 at 80 °C) satisfactory uptake swelling rates 82.3% 24.9%, respectively. Moreover, AEMWE based exhibited density 467 mA cm–2 (1 M KOH solution, 2 V, 60 °C). results indicate that structural is method improve stability shows some potential application in field AEMWE.

Language: Английский

Citations

0
Spinel-type high-entropy oxides for enhanced oxygen evolution reaction activity in anion exchange membrane water electrolyzers DOI Creative Commons

Manuela Montalto,

Williane da Silva Freitas, Emanuela Mastronardo

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160641 - 160641

Published: Feb. 1, 2025

Language: Английский

Citations

0
A square filter-press alkaline water electrolyzer for wide power range operation via flow enhancement and parasitic current suppression DOI
Sitong Liu, Runxia He, Zhenguo Guo

et al.

Electrochimica Acta, Journal Year: 2025, Volume and Issue: unknown, P. 146186 - 146186

Published: April 1, 2025

Language: Английский

Citations

0
Doped double spirocyclic cationic POSS for nanocomposite anion exchange membranes with high conductivity and robustness DOI
Na Li,

Hongzhe Ni,

Jialin Zhao

et al.

Renewable Energy, Journal Year: 2024, Volume and Issue: 237, P. 121572 - 121572

Published: Oct. 9, 2024

Language: Английский

Citations

2
Enhanced Proton Transfer in Proton Exchange Membrane Fuel Cells via Novel Nanocomposite Membrane Incorporating (3-Mercaptopropyl)trimethoxysilane-Graphene Oxide and Basic Amino Ligands: A Synergistic Acid-Base Approach DOI
Md Shahjahan Kabir Chowdury,

Ye Ji Park,

Su Min Jeong

et al.

Electrochimica Acta, Journal Year: 2024, Volume and Issue: unknown, P. 145197 - 145197

Published: Oct. 1, 2024

Language: Английский

Citations

1
Graphene-Based Materials as Proton-Conducting Membranes for Electrochemical Technologies DOI

Itthipon Moonnee,

Muhammad Sohail Ahmad,

Yusuke Inomata

et al.

Nanoscale, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

The functionalization and proton transfer characteristics of graphene oxide (GO)-based membranes have been investigated, highlighting their potential advancements in numerous electrochemical applications.

Language: Английский

Citations

0
Electrochemical Deposition and Properties of Ni Coatings with Nitrogen-Modified Graphene Oxide DOI Open Access
В. Н. Целуйкин, Asel Dzhumieva,

Alena Tribis

et al.

Journal of Composites Science, Journal Year: 2024, Volume and Issue: 8(4), P. 147 - 147

Published: April 13, 2024

In this study, a method for producing nitrogen-modified graphene oxide (NMGO) using hydrothermal synthesis in the presence of triethanolamine is presented. The composition and structure NMGO are characterized X-ray phase analysis (XPA), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy, Raman spectroscopy. Ni-based metal matrix coatings (MMCs) modified with were obtained from sulfate-chloride electrolyte galvanostatic mode. process electrochemical deposition these was studied chronovoltammetry. microstructure Ni–NMGO MMCs XPA SEM methods. It has been established that addition particles into Ni results an increase microhardness resulting by average 1.30 times. This effect consequence refinement crystallites high mechanical properties phase. corrosion-electrochemical behavior deposits 0.5 M sulfuric acid analyzed. shown corrosion rate 3.5% sodium chloride environment decreases approximately 1.50–1.70 times as compared to unmodified coatings. due act barrier preventing propagation form corrosive galvanic microelements Ni, promoting anodic polarization.

Language: Английский

Citations

0
Effect of Ta–TiO2 Nanoparticles in Anion Exchange Membranes: Improved Hydroxide Ion Conductivity and Mechanical Strength for Alkaline Water Electrolysis Cells DOI Creative Commons
Ahmed Mohamed Ahmed Mahmoud, Kenji Miyatake,

Kaoru Tsujii

et al.

Macromolecular Chemistry and Physics, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 18, 2024

Abstract To improve the properties of quaternized QPAF‐4 copolymers as anion exchange membranes, compositing with hydrophilic Ta–TiO 2 particles are investigated. Flexible QPAF‐4/Ta–TiO composite membranes obtained using solution‐casting and die coating methods. Cross‐sectional scanning electron microscopy reveals that method produces a more homogenous uniform distribution in than method. The Ta‐TiO promotes suppression water absorbability dimensional swelling which is pronounced coated membranes. increase hydroxide ion conductivity to 116.9 mS cm −1 at 80 °C for die‐coated membrane, surpassing pristine membrane (92 ). survive 4 m KOH 1000 h, maintaining 96–112 (88–99% remaining) initial conductivity. All exhibit higher mechanical robustness (elongation >200%), optimized fabricated an alkaline electrolysis cell achieving 1.63 V 1.0 A −2 (75.5% efficiency).

Language: Английский

Citations

0