Novel composite membranes based on dicationic ionic liquid and polybenzimidazole mixtures as strategy for enhancing thermal and electrochemical properties of proton exchange membrane fuel cells applications at high temperature

Hooshyari, Khadijeh; Javanbakht, Mehran; Adibi, Mina

doi:10.1016/j.ijhydene.2016.04.245

Cited by 58 publications

(26 citation statements)

References 65 publications

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“…Therefore, these nanocomposites are more useful than pure PBI for application at elevated temperatures. The PBI is a heterocyclic polymer and has a direct linkage between –N = and –N–H groups, which act as proton acceptor and proton donor, respectively, and so provide a rigid structure and a high glass transition temperature (T g ) . The T g of PBI was found to be 420°C, whereas that of nanocomposite membranes including the LSC doped‐perovskite nanoparticles showed a higher temperature (437°C).…”

Section: Resultsmentioning

confidence: 99%

“…The PBI is a heterocyclic polymer and has a direct linkage between -N = and -N-H groups, which act as proton acceptor and proton donor, respectively, and so provide a rigid structure and a high glass transition temperature (T g ). 11,53 The T g of PBI was found to be 420°C, whereas that of nanocomposite membranes including the LSC doped-perovskite nanoparticles showed a higher temperature (437°C). This increasing trend of T g originates from this fact that the LSC doped-perovskite nanoparticles restrict the motion of the PBI chains.…”

Section: Thermal and Chemical Stabilitymentioning

confidence: 98%

“…Phosphoric acid (PA)‐doped polybenzimidazole (PA‐PBI)–based high‐temperature PEMs as the well‐known alternative of Nafion have considerable benefits including high CO tolerance, faster electrode kinetics, and elimination of cathode flooding . Recently, many high‐temperature PEMs have been investigated . For example, different PEMs based on BaZrO 3 nanoparticles, SrCeO 3 nanoparticles, and Fe 2 TiO 5 nanoparticles have been introduced by our groups.…”

Section: Introductionmentioning

confidence: 99%

“…8,9 Recently, many high-temperature PEMs have been investigated. 10,11 For example, different PEMs based on BaZrO 3 nanoparticles, 12,13 SrCeO 3 nanoparticles, 14 and Fe 2 TiO 5 nanoparticles 15,16 have been introduced by our groups. Furthermore, PBI is a basic polymer with low cost, which can be doped with strong acids to form PEMs with high proton conductivity.…”

Section: Introductionmentioning

confidence: 99%

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Novel nanocomposite membranes based on PBI and doped‐perovskite nanoparticles as a strategy for improving PEMFC performance at high temperatures

2020

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Summary In this work, Sr2+ dopant effects of Ba0.9Sr0.1TiO3 and La0.9Sr0.1CrO3‐δ doped‐perovskite nanoparticles on increasing proton conductivity, fuel cell performance, and mechanical and thermal stability of polybenzimidazole‐based nanocomposite membranes were studied. The Sr2+ dopant creates cation vacancies in Ba0.9Sr0.1TiO3 doped‐perovskite nanoparticles and oxygen vacancies in La0.9Sr0.1CrO3‐δ doped‐perovskite nanoparticles. The oxygen vacancies, which decrease columbic repulsion between protons and positive ions, have a more important role than the cation vacancies. They provide high surface area and high interfacial interaction between La0.9Sr0.1CrO3‐δ doped‐perovskite nanoparticles, phosphoric acid, and polybenzimidazole for proton transfer and increase the proton conductivity of the nanocomposite membranes. In addition, the results of relative humidity effects showed that the ordered arrangement of oxygen vacancies of the La0.9Sr0.1CrO3‐δ doped‐perovskite nanoparticles creates a specific pathway in the nanocomposite membranes for increasing proton transfer in the presence of relative humidity. Furtheremore, at phosphoric acid doping level of 13 mol phosphoric acid per monomer unit, proton conductivity of the nanocomposite membranes containing 8 wt.% La0.9Sr0.1CrO3‐δ doped‐perovskite nanoparticles was obtained as 126 mS cm‐1 at 180°C and 6% relative humidity. The nanocomposite membrane showed the best performance and the power density of 0.62 W cm‐2 at 180°C and 0.5 V.

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Section: Resultsmentioning

confidence: 99%

Section: Thermal and Chemical Stabilitymentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Novel nanocomposite membranes based on PBI and doped‐perovskite nanoparticles as a strategy for improving PEMFC performance at high temperatures

2020

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“…The incorporation of a filler component to PBI to give composite membranes in order to overcome the phosphoric acid problems, like acid leaching, membrane degradation and stack durability, has led to the fabrication novel PBI composite membranes with enhanced proton conductivity, improved chemical and thermal stability and reinforced mechanical properties. Several families of materials can be added as fillers to PBI, such as silica, metalcarborane and metal oxides, phosphate salts, heteropolyacids, pyrophosphates, carbon‐based materials like graphene oxide and carbon nanotubes, and ionic liquids …”

Section: Mofs As Fillers In Mixed‐matrix Membranes For Pemfcmentioning

confidence: 99%

Proton Conductivity of Composite Polyelectrolyte Membranes with Metal‐Organic Frameworks for Fuel Cell Applications

Escorihuela

Narducci

Compañ

et al. 2018

Adv Materials Inter

145

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The study of proton conductivity processes has gained intensive attention in the past decades due to their potential applications in chemical sensors, electrochemical devices, and energy generation. The scientific community has focused its efforts on the development of high‐performing polymeric membranes as proton exchange membranes (PEMs) for fuel cell (FC) applications. In particular, high conductivity at different humidity and temperature and enhanced chemical and mechanical stability under operative conditions are considered the main goals to be reached. The design of mixed‐matrix membranes (MMMs) based on conductive polymers and inorganic fillers is an approach commonly used for achieving materials with improved conductive and mechanical properties. In the last five years, the use of metal‐organic frameworks (MOFs) as fillers for conductive MMMs has rapidly grown for their intrinsic stability and structural versatility. The recent progress around the proton conductivity of MOF based composite membranes on PEMs for FC applications is critically reviewed.

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Rational Materials and Structure Design for Improving the Performance and Durability of High Temperature Proton Exchange Membranes (HT‐PEMs)

Song,

Zhao,

Zhou

et al. 2023

Advanced Science

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Hydrogen energy as the next‐generation clean energy carrier has attracted the attention of both academic and industrial fields. A key limit in the current stage is the operation temperature of hydrogen fuel cells, which lies in the slow development of high‐temperature and high‐efficiency proton exchange membranes. Currently, much research effort has been devoted to this field, and very innovative material systems have been developed. The authors think it is the right time to make a short summary of the high‐temperature proton exchange membranes (HT‐PEMs), the fundamentals, and developments, which can help the researchers to clearly and efficiently gain the key information. In this paper, the development of key materials and optimization strategies, the degradation mechanism and possible solutions, and the most common morphology characterization techniques as well as correlations between morphology and overall properties have been systematically summarized.

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Novel composite membranes based on dicationic ionic liquid and polybenzimidazole mixtures as strategy for enhancing thermal and electrochemical properties of proton exchange membrane fuel cells applications at high temperature

Cited by 58 publications

References 65 publications

Novel nanocomposite membranes based on PBI and doped‐perovskite nanoparticles as a strategy for improving PEMFC performance at high temperatures

Novel nanocomposite membranes based on PBI and doped‐perovskite nanoparticles as a strategy for improving PEMFC performance at high temperatures

Proton Conductivity of Composite Polyelectrolyte Membranes with Metal‐Organic Frameworks for Fuel Cell Applications

Rational Materials and Structure Design for Improving the Performance and Durability of High Temperature Proton Exchange Membranes (HT‐PEMs)

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