Preparation of phosphotungstic acid hybrid proton exchange membranes by constructing proton transport channels for direct methanol fuel cells

Zhang, Yuanjing; Song, Yingxu; Chen, Dandan; Qi, Jin; Chen, Jinyao; Cao, Yong

doi:10.1016/j.polymer.2022.125589

Cited by 13 publications

(7 citation statements)

References 97 publications

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“…Consequently, numerous studies have investigated PVA-based PEMs because of PVA's remarkable methanol barrier capabilities, which are related to its dense structure and enabled by strong intra-and intermolecular hydrogen bonds. PVAbased PEMs with semi-IPN (interpenetrating polymer network) structures were created by combining PVA with polyanions such as poly(acrylic acid) [107], poly(styrene sulfonic acid-co-maleic acid) [108,109], poly(2-acrylamido-2-methylpropane sulfonic acid) [110], and phosphotungstic acid [111]. Lue et al [112] conducted a study reporting a methanol permeability of 3.57 × 10 −7 cm 2 /s for a pure polyvinyl alcohol (PVA) membrane.…”

Section: Pva-proton-conducting and Methanol Barrier Membranes For Dir...mentioning

confidence: 99%

Advances in Polyvinyl Alcohol-Based Membranes for Fuel Cells: A Comprehensive Review on Types, Synthesis, Modifications, and Performance Optimization

Madhuranthakam,

Abudaqqa,

Fowler

2024

Polymers

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Fuel cell technology is at the forefront of sustainable energy solutions, and polyvinyl alcohol (PVA) membranes play an important role in improving performance. This article thoroughly investigates the various varieties of PVA membranes, their production processes, and the numerous modification tactics used to solve inherent problems. Various methods were investigated, including chemical changes, composite blending, and the introduction of nanocomposites. The factors impacting PVA membranes, such as proton conductivity, thermal stability, and selectivity, were investigated to provide comprehensive knowledge. By combining various research threads, this review aims to completely investigate the current state of PVA membranes in fuel cell applications, providing significant insights for both academic researchers and industry practitioners interested in efficient and sustainable energy conversion technologies. The transition from traditional materials such as Nafion to PVA membranes has been prompted by limitations associated with the former, such as complex synthesis procedures, reduced ionic conductivity at elevated temperatures, and prohibitively high costs, which have hampered their widespread adoption. As a result, modern research efforts are increasingly focused on the creation of alternative membranes that can compete with conventional technical efficacy and economic viability in the context of fuel cell technologies.

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Section: Pva-proton-conducting and Methanol Barrier Membranes For Dir...mentioning

confidence: 99%

Advances in Polyvinyl Alcohol-Based Membranes for Fuel Cells: A Comprehensive Review on Types, Synthesis, Modifications, and Performance Optimization

Madhuranthakam,

Abudaqqa,

Fowler

2024

Polymers

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“…Proton conductivity is the primary characteristic of any proton-conducting material. 6 Proton conduction at the molecular level in PEMs occurs via two principal mechanisms: (i) Grotthuss (or hopping) mechanism and (ii) vehicular mechanism. The former is associated with protons hopping from one water molecule or functional group to the next by sequential formation and breaking of hydrogen bonds, and the latter deals with hydrated protons (H + (H 2 O) x ) diffuse together with water molecules.…”

Section: F I G U R Ementioning

confidence: 99%

“…[3][4][5] A suitable PEM should offer high proton conductivity, low fuel crossover, acceptable mechanical characteristics along with affordable price. 6 In the current fuel cell technology, the state-of-the-art perfluorosulfonic acid PEM, DuPont's Nafion, is the benchmark PEM due to its outstanding proton conductivity and mechanical and chemical durability. The remarkable ion-and solvent-transport abilities of Nafion are due to wide ionconducting nanochannels formed as a result of distinct phase separation in the hydrated state.…”

Section: Introductionmentioning

confidence: 99%

Proton exchange membranes based on sulfonated polybutylene fumarate: Preparation and characterization

Shamsabadi,

Tohidian,

Hemmasi

et al. 2024

Journal of Polymer Science

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Based on a novel unsaturated polyester, polybutylene fumarate (PBF), a series of sulfonated proton exchange membranes were prepared and characterized for direct methanol fuel cell application. In this work, PBF underwent sulfonation at different degrees, and the optimum degree of sulfonation (DS) was identified by assessing the hydrolytic stability. In the second step, an effective strategy to enhance the membranes' proton conductivity was adopted by the addition of the 2‐(1H‐Imidazol‐2‐yl) acetic acid (Im‐COOH) compound as a proton‐conducting agent to the sulfonated PBF (SPBF) matrix with the optimum DS. The results unveiled significant alterations in the physicochemical properties of PBF due to sulfonation, including an elevation in water uptake and the glass transition temperature (Tg), accompanied by the disappearance of the crystallinity within SPBF. In terms of electrochemical characteristics, the SPBF‐17.5 PEM demonstrated a proton conductivity of 3.36 × 10−3 S cm−1 and a methanol permeability of 1.068 × 10−7 cm2 s−1, yielding a selectivity of approximately 31,460 S s cm−3. Furthermore, the attractive interactions between SO3H and NH groups further elevated proton conductivity to 4.12 × 10−3 S cm−1, accompanied by a decrease in methanol permeability to 0.942 × 10−7 cm2 s−1, enhancing the selectivity parameter to 43,736 S s cm−3.

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“…For direct methanol FCs, a new hybrid PEM made of polyvinyl alcohol (PVA) and quaternized polyethyleneimine (QPEI) has been suggested by Zhang Y and his group [ 117 ]. QPEI is utilized as an anchoring agent to increase the compatibility of the organic-inorganic interface and decrease the leakage of phosphotungstic acid (PWA), which serves as the proton conductor.…”

Section: Properties Of Nanomaterials Modified Pemsmentioning

confidence: 99%

“…In addition, Table 2 gives a clear picture of various membranes and their characteristics. [117]. QPEI is utilized as an anchoring agent to increase the compatibility of the organic-inorganic interface and decrease the leakage of phosphotungstic acid (PWA), which serves as the proton conductor.…”

Section: Layer-by-layer Assemblymentioning

confidence: 99%

Recent Advanced Synthesis Strategies for the Nanomaterial-Modified Proton Exchange Membrane in Fuel Cells

et al. 2023

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Hydrogen energy is converted to electricity through fuel cells, aided by nanostructured materials. Fuel cell technology is a promising method for utilizing energy sources, ensuring sustainability, and protecting the environment. However, it still faces drawbacks such as high cost, operability, and durability issues. Nanomaterials can address these drawbacks by enhancing catalysts, electrodes, and fuel cell membranes, which play a crucial role in separating hydrogen into protons and electrons. Proton exchange membrane fuel cells (PEMFCs) have gained significant attention in scientific research. The primary objectives are to reduce greenhouse gas emissions, particularly in the automotive industry, and develop cost-effective methods and materials to enhance PEMFC efficiency. We provide a typical yet inclusive review of various types of proton-conducting membranes. In this review article, special focus is given to the distinctive nature of nanomaterial-filled proton-conducting membranes and their essential characteristics, including their structural, dielectric, proton transport, and thermal properties. We provide an overview of the various reported nanomaterials, such as metal oxide, carbon, and polymeric nanomaterials. Additionally, the synthesis methods in situ polymerization, solution casting, electrospinning, and layer-by-layer assembly for proton-conducting membrane preparation were analyzed. In conclusion, the way to implement the desired energy conversion application, such as a fuel cell, using a nanostructured proton-conducting membrane has been demonstrated.

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Preparation of phosphotungstic acid hybrid proton exchange membranes by constructing proton transport channels for direct methanol fuel cells

Cited by 13 publications

References 97 publications

Advances in Polyvinyl Alcohol-Based Membranes for Fuel Cells: A Comprehensive Review on Types, Synthesis, Modifications, and Performance Optimization

Advances in Polyvinyl Alcohol-Based Membranes for Fuel Cells: A Comprehensive Review on Types, Synthesis, Modifications, and Performance Optimization

Proton exchange membranes based on sulfonated polybutylene fumarate: Preparation and characterization

Recent Advanced Synthesis Strategies for the Nanomaterial-Modified Proton Exchange Membrane in Fuel Cells

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