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Title:Porous Silicon Membrane Based Formic Acid Fuel Cells for Micro Power Generation
Author(s):Chu, Kuan-Lun
Doctoral Committee Chair(s):Masel, Richard I.
Department / Program:Electrical and Computer Engineering
Discipline:Electrical and Computer Engineering
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Engineering, Electronics and Electrical
Abstract:Most importantly in this work, porous silicon is demonstrated to be a novel proton conducting membrane material for implementation of micro silicon fuel cells. With 5 M formic acid plus 0.5 M sulfuric acid as the fuel, the micro fuel cell based on a p-type porous silicon membrane produces peak power density about 30 mW/cm2 at current density of about 120 mA/cm 2. Another design of micro fuel cells based on an n-type porous silicon membrane for the improvement of the power output is also presented. Micro fuel cells are fabricated using porous silicon membranes with different thickness and different pore morphologies, and their performances are tested. Fuel solutions with different formic acid concentrations are also tested. The fuel cell peak power density reached 94 mW/cm2 at current density level of 314 mA/cm2.
Issue Date:2007
Description:135 p.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2007.
Other Identifier(s):(MiAaPQ)AAI3269862
Date Available in IDEALS:2015-09-25
Date Deposited:2007

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