Magnetic resonance and conductivity study of a gelatin-based polymer gel electrolyte

Pawlicka, Agnieszka; Mattos, R. I.; Lima, José Fernando de; Tambelli, Caio Eduardo de Campos; Magon, Cláudio José; Donoso, José Pedro

doi:10.1016/j.electacta.2011.07.062

Cited by 16 publications

(3 citation statements)

References 28 publications

(33 reference statements)

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“…SPEs based on inexpensive and environmentally friendly natural materials are promising candidates to replace synthetic polymer-based SPEs (particularly Nafion) in FCs. There are only a few studies investigating natural SPEs based on such natural polymers as pectin, chitin phosphate, gelatin, , agar and alginic acid, , and uracil. ,, …”

Section: Non-nafion Spementioning

confidence: 99%

Review of Advanced Materials for Proton Exchange Membrane Fuel Cells

2014

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The scientific community is focused on the development of inexpensive and high-performing membrane materials for proton exchange membrane (PEM) fuel cells (FCs). The major approach to reducing the cost of FCs, which is crucial for the widespread acceptance of FCs as energy sources for various practical applications, is reducing the cost of the membrane. Efforts are being made in the development of advanced polymeric materials, which will satisfy the technical and economic demands of the consumers. Because most alternative membranes are outperformed by Nafion membranes over an entire set of important properties, it may be worthwhile to compromise on certain parameters to develop alternative specialized membranes. This review presents the properties (mainly conductivity and chemical and mechanical stability) of modern solid polymer electrolytes (SPEs) for PEM FCs.

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Section: Non-nafion Spementioning

confidence: 99%

Review of Advanced Materials for Proton Exchange Membrane Fuel Cells

2014

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“…[5] However, Nafion has some serious drawbacks; Nafion-based membranes are expensive because of their complex and high manufacturing process cost, they show low conductivity at reduced humidity levels and loss of mechanical stability at high temperature (100 °C). Such natural-based polymers include agar, [11,12] gelatin, [13,14] starch, [15] cellulose, [16] or chitosan. The recycling of this type of membranes is already under study, but its reuse does not seem to be straightforward, as the recycling procedures require high temperature and pressures.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, the aim to develop bio‐solid polymer electrolytes (BioSPEs) based on natural polymers has arisen as alternative candidates to substitute synthetic polymer‐based membranes due to their abundance, low‐cost, and environmentally friendly nature. Such natural‐based polymers include agar, gelatin, starch, cellulose, or chitosan . In particular, chitosan (CH) and its derivatives are been extensively investigated as some of the most attractive “green” materials for power sources applications due to their biodegradability, biocompatibility, nontoxicity, and low‐cost.…”

Section: Introductionmentioning

confidence: 99%

Biopolymer Electrolyte Membranes (BioPEMs) for Sustainable Primary Redox Batteries

Alday

Barros

Alves

et al. 2019

Advanced Sustainable Systems

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The proliferation of portable electronic devices has resulted in an increase of e‐waste that is generated after their use. One of the most hazardous components in e‐waste are batteries, due to their content of heavy metals and toxic chemicals. Fuel cells and redox flow batteries have been recognized as more sustainable alternatives to Li‐based batteries for powering portable applications. Although they provide comparable energy and power densities, they still face some challenges because they rely on proton exchange membranes based on nonenvironmentally friendly, high‐priced perfluorosulfonic acid copolymers that require energy‐intense manufacturing and recycling procedures. In this work, eco‐friendly and sustainable biopolymer electrolyte membranes (BioPEMs) are synthesized from biopolymers like chitosan, cellulose, and starch. These BioPEMs bring forth advantages in performance, sustainability, and cost. Additionally, they present good chemical and mechanical stability, high ionic conductivity in the same order of magnitude as Nafion membranes. Two alternatives of cellulose–chitosan based BioPEMs are successfully applied into primary redox batteries using benign eco‐friendly redox chemistries, delivering open circuit voltages above 0.75 V and power output up to 2.5 mW cm−2. These results demonstrate BioPEMs capability to improve biodegradable batteries in sectors requiring a transient electrical energy, such as environmental monitoring, agriculture, or packaging.

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