ArticlePolymers2020
A Deep Insight into Different Acidic Additives as Doping Agents for Enhancing Proton Conductivity on Polybenzimidazole Membranes.
Article in Polymers, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
What it found
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Who cites it
10 citing papers in PubMed, 39 citations in OpenAlex.
- Polybenzimidazole Membranes Doped with Sulfonic Acid-Containing Covalent Organic Frameworks and Polymers for Enhanced Performance in Vanadium Redox Flow Batteries.ACS applied materials & interfaces · 2025Article
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- Ionic Conductive Polymers for Electrochemical Devices.Polymers · 2022Article
- Membrane-Based Electrolysis for Hydrogen Production: A Review.Membranes · 2021Review
- Review
- Diffusivity and free anion concentration of ionic liquid composite polybenzimidazole membranes.RSC advances · 2021Article
- Structural and Electrochemical Analysis of CIGS: Cr Crystalline Nanopowders and Thin Films Deposited onto ITO Substrates.Nanomaterials (Basel, Switzerland) · 2021Article
- Review
- Article
Corrections and comments
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Authors and funding
3 authors at 2 institutions in 1 country.
Funding
Abstract
The use of phosphoric acid doped polybenzimidazole (PBI) membranes for fuel cell applications has been extensively studied in the past decades. In this article, we present a systematic study of the physicochemical properties and proton conductivity of PBI membranes doped with the commonly used phosphoric acid at different concentrations (0.1, 1, and 14 M), and with other alternative acids such as phytic acid (0.075 M) and phosphotungstic acid (HPW, 0.1 M). The use of these three acids was reflected in the formation of channels in the polymeric network as observed by cross-section SEM images. The acid doping enhanced proton conductivity of PBI membranes and, after doping, these conducting materials maintained their mechanical properties and thermal stability for their application as proton exchange membrane fuel cells, capable of operating at intermediate or high temperatures. Under doping with similar acidic concentrations, membranes with phytic acid displayed a superior conducting behavior when compared to doping with phosphoric acid or phosphotungstic acid.
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Registered trials
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