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Please use this identifier to cite or link to this item: http://hdl.handle.net/10119/13804

Title: Modification for Uniform Surface of Nafion Ultra-thin Film Deposited by Inkjet Printing
Authors: Guo, Yanglu
Ono, Yutaro
Nagao, Yuki
Keywords: Fuel Cells
Polymer Electrolytes
Three phase boundary
Issue Date: 2015-09-01
Publisher: American Chemical Society
Magazine name: Langmuir
Volume: 31
Number: 37
Start page: 10137
End page: 10144
DOI: 10.1021/acs.langmuir.5b02395
Abstract: A lack of knowledge about the features of Nafion confined to ultra-thin films at the interface has motivated additional examinations to promote the performance of polymer electrolyte membrane fuel cells (PEMFCs). In this work, we demonstrated the utilization of practical film-forming technique inkjet printing to fabricate a Nafion ultra-thin film less than 10nm thickness. However, the well-known “coffee-ring” effect caused poor quality of the printed pattern, which has restricted its application. This report describes a systematic investigation of necessary parameters such as ink concentration, substrate type, pitch, and offset for printing processes. Furthermore, post-treatment in an ethanol vapor atmosphere exhibited a significant effect on flattening and homogenizing the film surface morphology. Results show that the well-distributed Nafion ultra-thin film modified by ethanol vapor annealing manifested much-improved proton conductivity.
Rights: This document is the Accepted Manuscript version of a Published Work that appeared in final form in Langmuir, copyright (c) American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://pubs.acs.org/articlesonrequest/AOR-tqeB6XsQMhhKSpeYzDgy.
URI: http://hdl.handle.net/10119/13804
Material Type: author
Appears in Collections:c10-1. 雑誌掲載論文 (Journal Articles)

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