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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Unveiling the influence of radiation-induced grafting methods on the properties of polyethylene-based anion-exchange membranes for alkaline fuel cells

Full text
Author(s):
Biancolli, Ana Laura G. [1] ; Barbosa, Andrey S. [1] ; Kodama, Yasko [1] ; de Sousa, Jr., Rogerio R. [2] ; Lanfredi, Alexandre J. C. [2] ; Fonseca, Fabio C. [1] ; Rey, Jose Fernando Q. [2] ; Santiago, Elisabete I. [1]
Total Authors: 8
Affiliation:
[1] CNEN, IPEN, Nucl & Energy Res Inst, BR-05508000 Sao Paulo - Brazil
[2] Fed Univ ABC UFABC, Ctr Engn Modelling & Appl Social Sci, BR-09210580 Santo Andre, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Journal of Power Sources; v. 512, NOV 15 2021.
Web of Science Citations: 0
Abstract

Anion-exchange membranes (AEM) are envisioned as the enabling materials for the widespread use of costeffective and efficient polymeric fuel cells. Advancing the understanding of the effect of radiation-induced grafting (RIG) method on the final properties of AEMs is crucial to boost the performance of anion-exchange membrane fuel cells (AEMFCs). The present study provides a systematic investigation of the effect of RIG methods on physicochemical properties of LDPE-based AEMs with similar degree of grafting (DoG) and ion exchange capacity (IEC). Samples grafted by two methods - pre-irradiation (PIM) and simultaneous (SM) - have the same molecular structure, but distinct physicochemical properties due to markedly differences in the degree of crosslinking. Detailed characterization of AEMs showed that RIG method determines the mechanical properties, water transport, and the distribution of ionic groups, which have a direct impact on fuel cell performance and durability. The discussed results show that grafting step directly influences the internal structure and morphology. Controlling the synthesis parameters during RIG is a key feature to design AEMs with enhanced properties that lead to high AEMFC performance and stability. (AU)

FAPESP's process: 19/26955-3 - Synthesis of anion exchange membranes and ionomers for application in electrochemical conversion devices
Grantee:Ana Laura Gonçalves Biancolli
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 14/09087-4 - Studies on the use of bioethanol in proton exchange membrane and solid oxide fuel cells
Grantee:Marcelo Linardi
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 17/11937-4 - A sustainable path to methane conversion by advanced electrochemical technologies
Grantee:Fabio Coral Fonseca
Support Opportunities: Research Grants - Research Centers in Engineering Program