Probing the Efficiency of PPMG-Based Composite Electrolytes for Applications of Proton Exchange Membrane Fuel Cell

Transactions of Tianjin University, Journal Year: 2024, Volume and Issue: 30(3), P. 262 - 283

Published: June 1, 2024

Abstract PPMG-based composite electrolytes were fabricated via the solution method using polyvinyl alcohol and polyvinylpyrrolidone blend reinforced with various contents of sulfonated inorganic filler. Sulfuric acid was employed as sulfonating agent to functionalize external surface filler, i.e., graphene oxide. The proton conductivities newly prepared exchange membranes (PEMs) increased by increasing temperature content oxide (SGO), ranging from 0.025 S/cm 0.060 S/cm. induction optimum level SGO is determined be an excellent route enhance ionic conductivity. single-cell performance test conducted sandwiching PEMs between anode (0.2 mg/cm 2 Pt/Ru) a cathode Pt) prepare membrane electrode assemblies, followed hot pressing under pressure approximately 100 kg/cm at 60 °C for 5–10 min. highest power densities achieved PPMG 14.9 35.60 mW/cm 25 70 °C, respectively, ambient 100% relative humidity. Results showed that exhibit good electrochemical performance. results indicated 6 wt% filler can used alternative applications high-performance fuel cell.

Language: Английский

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Remarkable Conductivity and Durability of Anion Exchange Membrane With Poly(Fluorene‐Terphenyl Piperidinium) Incorporating Graphene Oxide

International Journal of Energy Research, Journal Year: 2025, Volume and Issue: 2025(1)

Published: Jan. 1, 2025

We present a series of organic–inorganic composite membranes containing graphene oxide (GO) and quaternized poly(fluorene‐terphenyl piperidinium) (QPFTP) polymer to enhance ion conductivity physicochemical properties. Utilizing the hydrophilic functional groups robust support GO, membrane accomplishes improved exchange capacity (IEC), swelling ratio, water uptake, electrochemical performance. The interaction between chains facilitated by interface ammonium on oxygen filler support, promotes hydrogen bond formation. Based our experiments results, it was proven that introduction GO improves alkaline stability membrane, optimal content confirmed be 0.7 wt%. Consequently, QPFTP‐GO‐0.7 reaches 198.2 mS cm −1 , demonstrating superior performance compared pristine (126.5 ). Furthermore, single cell achieves power density 347.6 mW −2 in an H 2 /O environment at 60°C. findings from this research are expected contribute advancement anion (AEM) technology, offering insights into design development next‐generation for sustainable energy applications.

Language: Английский

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Construction of ion transport channels in cation exchange membranes by embedding MXene with dual regulation strategy for electrodialysis

Journal of Membrane Science, Journal Year: 2024, Volume and Issue: unknown, P. 123322 - 123322

Published: Sept. 1, 2024

Language: Английский

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Cationic/Anionic Poly(p-Phenylene Oxide) Membranes: Preparation and Electrodialysis Performance for Nickel Recovery from Industrial Effluents

Membranes, Journal Year: 2024, Volume and Issue: 14(12), P. 268 - 268

Published: Dec. 11, 2024

Electrodialysis (ED) has already been applied to recover nickel in galvanizing processes, allowing recovery and the production of a treated effluent with demineralized water quality. However, growth ED use is still limited by commercialization ion-selective membranes, currently few large companies. Therefore, this paper presents development homogeneous cationic anionic membranes made from poly(2,6-dimethyl-1,4-phenylene oxide) (PPO) for use. Cationic were prepared sulfonation reaction PPO under different experimental conditions (PPO:H

Language: Английский

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Enhanced Ion Separation by Amine Grafted Graphene Oxide-Tripolyphosphate Anionic Composite Membrane Based on Polyvinylidene Fluoride

Journal of Membrane Science, Journal Year: 2024, Volume and Issue: 713, P. 123323 - 123323

Published: Sept. 11, 2024

Language: Английский

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