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

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)7-13
Number of pages7
JournalJournal of Industrial and Engineering Chemistry
Publication statusPublished - 2019 Jun 25

Bibliographical note

Funding Information:
This research was supported by the Technology innovation industrial Program funded by the Ministry of Trade, Industry and Energy (MOTIE) , Republic of Korea (grant number 10052823 and the Technology Development Program to Solve Climate Changes of the National Research Foundation (NRF) funded by the Ministry of Science, ICT & Future Planning ( NRF-2015M1A2A2056833 ).

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)

Fingerprint Dive into the research topics of 'Poly(ether imide) nanofibrous web composite membrane with SiO <sub>2</sub> /heteropolyacid ionomer for durable and high-temperature polymer electrolyte membrane (PEM) fuel cells'. Together they form a unique fingerprint.

Cite this