Magnesium-solution phase catholyte semi-fuel cell for undersea vehicles

Medeiros, Maria G.; Bessette, Russell R.; Deschenes, Craig M.; Patrissi, Charles J.; Carreiro, Louis G.; Tucker, Steven P.; Atwater, Delmas W

doi:10.1016/j.jpowsour.2004.03.024

Cited by 66 publications

(59 citation statements)

References 7 publications

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“…1a. The use of hydrogen peroxide instead of oxygen as an oxidant can yield higher cell potential values, its use has been implemented with magnesium [12] and aluminium [13] anodes in a number of prototype batteries for undersea water vehicles, and in borohydride fuel cells [14,15]. Hydrogen peroxide is attractive choice for these applications and is comparatively safe, stable as 35% solution in water, is not toxic and can produce water from its oxidation.…”

Section: Introductionmentioning

confidence: 99%

A direct borohydride—Acid peroxide fuel cell

León

Walsh

Rose

et al. 2007

Journal of Power Sources

142

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A fuel cell operating with aqueous sodium borohydride and hydrogen peroxide streams, with one, two and four cells (electrode area 64, 128 and 256 cm 2 ) connected in a bipolar mode in a filterpress flow cell is reported. The oxidation of borohydride ion was carried out on Au/C particles supported on a carbon felt electrode while the reduction of hydrogen peroxide was carried out on carbon supported Pt on a carbon paper substrate. Comparable cell potentials and power densities to direct borohydride fuel cells reported in the literature were obtained. The challenges to further development includes: increasing the low current density and avoid decomposition of borohydride and peroxide ions. The maximum power obtained at 20• C for one, two and four cell stacks was 2.2, 3.2 and 9.6 W (34.4, 25 and 37.5 mW cm −2 , respectively) with cell voltages of 1.06, 0.81 and 3.2 V at current densities of 32, 16 and 12 mA cm −2 , respectively.

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Section: Introductionmentioning

confidence: 99%

A direct borohydride—Acid peroxide fuel cell

León

Walsh

Rose

et al. 2007

Journal of Power Sources

142

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“…When the aluminium anode was replaced, the cell voltage was restored. These results indicating that the NWA-Co 3 [10] studied electrodes consisting of carbon microfibre array aligned perpendicular to the surface of current collector and coated with an alloy of Pd and Ir. They found the Mg-H 2 O 2 semi-fuel using this electrode shows higher power densities at equivalent H 2 O 2 utilisation compared to planar electrode.…”

Section: Original Research Papermentioning

confidence: 85%

“…The nanowire is composed of interconnected nanoparticles, which enables the nanowires to have a porous structure and a large surface area (Figure 2c) [17]. As a result, the NWA-Co 3 …”

Section: Al-h 2 O 2 Semi-fuel Cell Testsmentioning

confidence: 99%

“…The system has an energy density up to 100 Wh kg -1 and has been successfully used to power a civilian UUV (HUGIN 3000). Medeiros and Bessette et al [3,10,[12][13][14] investigated Mg-H 2 O 2 semi-fuel cells using carbon fibre supported Pd-Ir as the cathode catalyst and demonstrated that the semi-fuel cell has an achievable energy density of more than 500 Wh kg -1 based on the weights consumed during discharge. Yang et al [15,16] …”

Section: Introductionmentioning

confidence: 99%

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An Alkaline Al–H₂O₂ Semi‐Fuel Cell Based on a Nickel Foam Supported Co₃O₄ Nanowire Arrays Cathode

et al. 2011

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The electrode of Co3O4 nanowire arrays directly grown on nickel foam is prepared via a facile one‐step method. The electrode is characterised by scanning and transmission electron microscopy and tested as the cathode of an Al–H2O2 semi‐fuel cell. We found that Co3O4 forms clusters of nanowires with length up to around 15 μm and diameter around 250 nm. The nanowire is composed of interconnected nanoparticles. Effects of H2O2 concentrations, catholyte KOH concentration, catholyte flow rate and operation temperature on the cell performance are investigated. The cell exhibited an open circuit voltage of 1.4 V, and peak power densities of 85 and 137 mW cm–2 at 25 and 65 °C, respectively, while running on 0.4 mol L–1 H2O2 at a flow rate of 80 mL min–1.

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“…In this regard, SFCs derive their name by combining the consumable anode of classical batteries and the catalytic cathode of fuel cells. 3 8 The catalytic cathode reduces hydrogen peroxide (an oxidant) that is dissolved in the electrolyte to form a catholyte. Semi-fuel cathodes are typically made from carbon and use palladium or iridium catalysts to improve the efficiency of the reduction process.…”

Section: Semi-fuel Cellsmentioning

confidence: 99%

Development and Implementation of Carbon Nanofoam Cathode Structures for Magnesium-Hydrogen Peroxide Semi-Fuel Cells

Renninger¹

2008

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Public reporting burden for this collection of information is estimated to average 1 hour per response, including g the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of the collection of information, including suggestions for reducing this burden to Washington Headquarters Services, Directorate for Information Operations and Reports, 1215 Jefferson Davis Highway, Suite 1204, Arlington, VA 22202-4302, and ABSTRACT(cont from p. 1) and the extent of thiophenylation in the interior of the nanofoam paper has been improved by elevating the reflux temperature from 50 ºC to 70 ºC. Palladium nanoparticles are synthesized by chemically reducing 2.2 mM sodium tetrachloropalladate with sodium borohydride (NaBH4) in the presence of sodium citrate as a stabilizing ligand. The diameter of the diversiform nanoparticles is tuned between 4-11 nm by varying the ratio of Pd:citrate, and citrate-capped colloidal suspensions remain stable for months. Palladium-decorated carbon nanofoam papers behave as electrochemical double-layer capacitors in 0.2 M H2SO4/simulated brine, but electrochemically reduce H2O2 twice as effectively as bare carbon nanofoams, while only containing ~0.2 wt% (~4 μg Pd cm-2). All accessible and electrifiable Pd nanoparticles in the nanofoam scaffold are simultaneously utilized, as determined by comparing the maximum reduction current at increasing peroxide concentrations and with increased rotation rates. Future experiments will seek to boost the carbon conductivity and the Pd loading to improve electrochemical performance. A rotating disc electrode configuration was used for all electrochemical measurements to maximize the flux of fuel to the electrode surfaces. Palladium contents were determined by ICP-MS and electrochemical performances were normalized to the total mass of each electrode.

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Magnesium-solution phase catholyte semi-fuel cell for undersea vehicles

Cited by 66 publications

References 7 publications

A direct borohydride—Acid peroxide fuel cell

A direct borohydride—Acid peroxide fuel cell

An Alkaline Al–H₂O₂ Semi‐Fuel Cell Based on a Nickel Foam Supported Co₃O₄ Nanowire Arrays Cathode

Development and Implementation of Carbon Nanofoam Cathode Structures for Magnesium-Hydrogen Peroxide Semi-Fuel Cells

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Magnesium-solution phase catholyte semi-fuel cell for undersea vehicles

Cited by 66 publications

References 7 publications

A direct borohydride—Acid peroxide fuel cell

A direct borohydride—Acid peroxide fuel cell

An Alkaline Al–H2O2 Semi‐Fuel Cell Based on a Nickel Foam Supported Co3O4 Nanowire Arrays Cathode

Development and Implementation of Carbon Nanofoam Cathode Structures for Magnesium-Hydrogen Peroxide Semi-Fuel Cells

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An Alkaline Al–H₂O₂ Semi‐Fuel Cell Based on a Nickel Foam Supported Co₃O₄ Nanowire Arrays Cathode