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Cloisite- and bentonite-based stable nanocomposite membranes for enhancement of direct methanol fuel cell applications

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journal contribution
posted on 2023-01-27, 14:59 authored by Vikas Kumar, SA GokulaKrishnan, G Arthanareeswaran, Ahmad Fauzi Ismail, Juhana Jaafar, Diganta DasDiganta Das, Lukka Thuyavan Yogarathinam

Nanocomposite membranes were fabricated using sulfonated polyether ether ketone (SPEEK) by incorporating nanocalys of cloisite 30B and bentonite. The nanocomposite membranes with the thickness of 100 µm were successfully fabricated by phase inversion method. The membranes were characterized for their organic functional groups, morphological structure, thermal and physical properties under the influences of cloisite 30B and bentonite addition in SPEEK matrix. The presence of nanoclays was confirmed by the changes observed in the membrane morphology and improved glass transition temperature in pristine SPEEK membrane. The fuel cell performance of the membranes was determined by their water uptake capacity, methanol permeability and proton conductivity. The 0.5 wt.% addition of cloisite and bentonite in SPEEK showed 2.1% reduction of water uptake as compared to the pristine SPEEK membrane. The cloisite added SPEEK membrane showed the average proton conductivity of 3.05 x 10-5 S cm-1 at 80°C. Nevertheless, cloisite and bentonite incorporated SPEEK nanocomposite membranes demonstrated the reduced proton conductivity of 6.14% in the methanol permeability as compared to the pristine SPEEK membrane. Hence, the modified SPEEK nanocomposite membranes with cloisite and bentonite are being suggested to be a promising proton exchange membrane for direct methanol fuel cell.

Funding

Royal Academy of Engineering, UK for a Newton-Bhabha Higher Education Initiative Fund (Grant Number: HEP151642)

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Chemical Engineering

Published in

Polymer Bulletin

Volume

80

Issue

12

Pages

13005-13023

Publisher

Springer

Version

  • AM (Accepted Manuscript)

Rights holder

© The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature

Publisher statement

This version of the article has been accepted for publication, after peer review (when applicable) and is subject to Springer Nature’s AM terms of use, but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at: https://doi.org/10.1007/s00289-022-04637-w

Acceptance date

2022-11-14

Publication date

2023-01-26

Copyright date

2022

ISSN

0170-0839

eISSN

1436-2449

Language

  • en

Depositor

Dr Diganta Das. Deposit date: 10 December 2022

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