Poly(ether imide) nanofibrous web composite membrane with SiO 2 /heteropolyacid ionomer for durable and high-temperature polymer electrolyte membrane (PEM) fuel cells

Chanmin Lee, Heesoo Na, Yukwon Jeon, Ho Jung Hwang, Hyun Jong Kim, Isao Mochida, Seong Ho Yoon, Joo Il Park, Yong Gun Shul

研究成果: Contribution to journalArticle査読

6 被引用数 (Scopus)

抄録

Poly(ether imide) (PEI) membranes for polymer electrolyte membrane fuel cells (PEMFCs) are prepared by the electrospinning method. This approach produces a membrane with a high porosity and surface area that is suitable for accommodating proton-conducting materials. A composite membrane was prepared by impregnating the pores of the electrospun PEI membrane with Aquivion ionomer. Then, an inorganic proton conductor in the form of SiO 2 /heteropolyacid (HPA) nanoparticles was prepared by a microemulsion process and the particles added to the Aquivion ionomer. The membranes were characterized by field emission scanning electron microscopy (FE-SEM) and single-cell performance testing for PEMFC. The durability of the composite membrane was assessed via accelerated lifetime and on/off tests. The ionomer-impregnated electrospun PEI membrane showed good thermal stability, satisfactory mechanical properties, and high proton conductivity. The addition of the SiO 2 /HPA nanoparticles improved the proton conductivity of the composite membrane, thereby allowing the operating temperature in low humidity environments to be extended. The composite membrane exhibited promising properties for application in high-temperature PEMFCs.

本文言語英語
ページ(範囲)7-13
ページ数7
ジャーナルJournal of Industrial and Engineering Chemistry
74
DOI
出版ステータス出版済み - 6 25 2019

All Science Journal Classification (ASJC) codes

  • 化学工学(全般)

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