surfactant-assisted perovskite nanofillers incorporated in quaternized poly (vinyl alcohol) composite membrane as an effective hydroxide-conducting electrolyte

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ID: 182247
2017
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Abstract
Perovskite LaFeO3 nanofillers (0.1%) are incorporated into a quaternized poly(vinyl alcohol) (QPVA) matrix for use as hydroxide-conducting membranes in direct alkaline methanol fuel cells (DAMFCs). The as-synthesized LaFeO3 nanofillers are amorphous and functionalized with cetyltrimethylammonium bromide (CTAB) surfactant. The annealed LaFeO3 nanofillers are crystalline without CTAB. The QPVA/CTAB-coated LaFeO3 composite membrane shows a defect-free structure while the QPVA/annealed LaFeO3 film has voids at the interfaces between the soft polymer and rigid nanofillers. The QPVA/CTAB-coated LaFeO3 composite has lower methanol permeability and higher ionic conductivity than the pure QPVA and QPVA/annealed LaFeO3 films. We suggest that the CTAB-coated LaFeO3 provides three functions to the polymeric composite: increasing polymer free volume, ammonium group contributor, and plasticizer to enhance the interfacial compatibility. The composite containing CTAB-coated LaFeO3 results in superior cell performance. A maximum power density of 272 mW cm−2 is achieved, which is among the highest power outputs reported for DAMFCs in the literature.
Reference Key
kumar2017energiessurfactant-assisted Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Selvaraj Rajesh Kumar;Wei-Ting Ma;Hsin-Chun Lu;Li-Wei Teng;Hung-Chun Hsu;Chao-Ming Shih;Chun-Chen Yang;Shingjiang Jessie Lue
Journal acs combinatorial science
Year 2017
DOI
10.3390/en10050615
URL
http://www.mdpi.com/1996-1073/10/5/615
Keywords Keywords not found

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