2026-09-21T02:25:12Z https://www.ideals.illinois.edu/oai-pmh

oai:www.ideals.illinois.edu:2142/82345 2023-07-11 col_2142_5131 col_2142_11615 com_2142_5130 com_2142_9130 com_2142_8903

Masel, Richard I. Lu, Chang 2015-09-25T20:43:12Z 2015-09-25T20:43:12Z 10000-01-01 2002 2002 In the second part of this work, we developed a new class of proton conductors based on nanoporous silicon. Proton conducting electrolytes are crucial components in fuel cells. However, the implementation of prevalent polymer electrolyte membranes leads to difficulties in manufacturing the fuel cell structure at the micron scale. Here we show that nanoporous silicon membranes with a thickness around 30∼50 microns exhibit comparable proton conductivities as polymer electrolyte membranes. A non-optimized prototype micro fuel cell made of a nanoporous silicon membrane (37 microns thick) shows very promising performance. While running on formic acid and oxygen, the highest open circuit voltage is 0.79 V and the current density is 13.3 mA/cm2. These initial results show that nanoporous silicon membranes are very promising materials for electrolyte applications especially in silicon-based micro fuel cells. The technique can also be useful for other applications involving proton conduction. Made available in DSpace on 2015-09-25T20:43:12Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 3070373.pdf: 8176192 bytes, checksum: 4a654fc5f6ab5774cae67c92755e2522 (MD5) Previous issue date: 2002 Embargo set by: Seth Robbins for item 83626 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs U of I Only 196 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2002. http://hdl.handle.net/2142/82345 (MiAaPQ)AAI3070373 eng Energy Efforts Towards Micro Fuel Cells text Chemical Engineering Chemical Engineering University of Illinois at Urbana-Champaign Dissertation Ph.D.