Passive direct formic acid microfabricated fuel cells

J. Yeom; R. S. Jayashree; C. Rastogi; M. A. Shannon; P. J.A. Kenis

doi:10.1016/j.jpowsour.2006.02.066

Passive direct formic acid microfabricated fuel cells

J. Yeom, R. S. Jayashree, C. Rastogi, M. A. Shannon, P. J.A. Kenis

Research output: Contribution to journal › Article › peer-review

Abstract

This paper reports on microscale silicon-based direct formic acid fuel cells (Si-DFAFCs) in which the fuel and the oxidant are supplied to the electrodes in a passive manner. Passive delivery of fuel and oxidant eliminates the need for ancillary components and associated parasitic losses. In this Si-DFAFC, an aqueous solution of formic acid is in direct contact with a Pd- or Pt-based anode and a Pt-based cathode is exposed to either a forced oxygen stream or quiescent air. In the presence of a forced oxygen flow on the cathode side the cell with Pd catalyst on the anode delivers a maximum power density of about 30 mW cm^-2 at room temperature, limited mostly by mass transfer at the anode, while in an all-passive mode (quiescent air on the cathode side) a maximum power density of 12.3 mW cm^-2 is obtained, limited by oxygen transport. This all-passive Si-DFAFC is fabricated using processes that are post-CMOS compatible, and thus can be integrated directly with envisioned MEMS applications, such as small sensors and actuators.

Original language	English (US)
Pages (from-to)	1058-1064
Number of pages	7
Journal	Journal of Power Sources
Volume	160
Issue number	2 SPEC. ISS.
DOIs	https://doi.org/10.1016/j.jpowsour.2006.02.066
State	Published - Oct 6 2006

Keywords

Formic acid
Membrane electrode assembly
Micro fuel cell
Passive fuel cell

ASJC Scopus subject areas

Electrochemistry
Fuel Technology
Materials Chemistry
Energy (miscellaneous)

Online availability

10.1016/j.jpowsour.2006.02.066

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title = "Passive direct formic acid microfabricated fuel cells",

abstract = "This paper reports on microscale silicon-based direct formic acid fuel cells (Si-DFAFCs) in which the fuel and the oxidant are supplied to the electrodes in a passive manner. Passive delivery of fuel and oxidant eliminates the need for ancillary components and associated parasitic losses. In this Si-DFAFC, an aqueous solution of formic acid is in direct contact with a Pd- or Pt-based anode and a Pt-based cathode is exposed to either a forced oxygen stream or quiescent air. In the presence of a forced oxygen flow on the cathode side the cell with Pd catalyst on the anode delivers a maximum power density of about 30 mW cm-2 at room temperature, limited mostly by mass transfer at the anode, while in an all-passive mode (quiescent air on the cathode side) a maximum power density of 12.3 mW cm-2 is obtained, limited by oxygen transport. This all-passive Si-DFAFC is fabricated using processes that are post-CMOS compatible, and thus can be integrated directly with envisioned MEMS applications, such as small sensors and actuators.",

keywords = "Formic acid, Membrane electrode assembly, Micro fuel cell, Passive fuel cell",

author = "J. Yeom and Jayashree, {R. S.} and C. Rastogi and Shannon, {M. A.} and Kenis, {P. J.A.}",

note = "Funding Information: The authors acknowledge generous support by the Defense Advanced Research Project Agency under U.S. Air Force Grant F33615-01-C-2172. All SEM work was conducted in the Center for Microanalysis of Materials, in the Frederick Seitz Material Research Laboratory, University of Illinois, which is partially supported by the U.S. Department of Energy under grant DEFC02-91-ER45439. Any opinions, findings, and conclusions or recommendations expressed in this publication are those of the authors and do not necessarily reflect the views of the Department of Energy, the U.S. Air Force, or the Defense Advanced Projects Research Agency.",

year = "2006",

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doi = "10.1016/j.jpowsour.2006.02.066",

language = "English (US)",

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AU - Yeom, J.

AU - Jayashree, R. S.

AU - Rastogi, C.

AU - Shannon, M. A.

AU - Kenis, P. J.A.

N1 - Funding Information: The authors acknowledge generous support by the Defense Advanced Research Project Agency under U.S. Air Force Grant F33615-01-C-2172. All SEM work was conducted in the Center for Microanalysis of Materials, in the Frederick Seitz Material Research Laboratory, University of Illinois, which is partially supported by the U.S. Department of Energy under grant DEFC02-91-ER45439. Any opinions, findings, and conclusions or recommendations expressed in this publication are those of the authors and do not necessarily reflect the views of the Department of Energy, the U.S. Air Force, or the Defense Advanced Projects Research Agency.

PY - 2006/10/6

Y1 - 2006/10/6

N2 - This paper reports on microscale silicon-based direct formic acid fuel cells (Si-DFAFCs) in which the fuel and the oxidant are supplied to the electrodes in a passive manner. Passive delivery of fuel and oxidant eliminates the need for ancillary components and associated parasitic losses. In this Si-DFAFC, an aqueous solution of formic acid is in direct contact with a Pd- or Pt-based anode and a Pt-based cathode is exposed to either a forced oxygen stream or quiescent air. In the presence of a forced oxygen flow on the cathode side the cell with Pd catalyst on the anode delivers a maximum power density of about 30 mW cm-2 at room temperature, limited mostly by mass transfer at the anode, while in an all-passive mode (quiescent air on the cathode side) a maximum power density of 12.3 mW cm-2 is obtained, limited by oxygen transport. This all-passive Si-DFAFC is fabricated using processes that are post-CMOS compatible, and thus can be integrated directly with envisioned MEMS applications, such as small sensors and actuators.

AB - This paper reports on microscale silicon-based direct formic acid fuel cells (Si-DFAFCs) in which the fuel and the oxidant are supplied to the electrodes in a passive manner. Passive delivery of fuel and oxidant eliminates the need for ancillary components and associated parasitic losses. In this Si-DFAFC, an aqueous solution of formic acid is in direct contact with a Pd- or Pt-based anode and a Pt-based cathode is exposed to either a forced oxygen stream or quiescent air. In the presence of a forced oxygen flow on the cathode side the cell with Pd catalyst on the anode delivers a maximum power density of about 30 mW cm-2 at room temperature, limited mostly by mass transfer at the anode, while in an all-passive mode (quiescent air on the cathode side) a maximum power density of 12.3 mW cm-2 is obtained, limited by oxygen transport. This all-passive Si-DFAFC is fabricated using processes that are post-CMOS compatible, and thus can be integrated directly with envisioned MEMS applications, such as small sensors and actuators.

KW - Formic acid

KW - Membrane electrode assembly

KW - Micro fuel cell

KW - Passive fuel cell

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ER -

Passive direct formic acid microfabricated fuel cells

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