Recent Developments in Borohydride Fuel Cells

Autor:	Abigail Rose, Robert W. Reeve, D.J. Browning, John B. Lakeman, Russell R. Bessette, Charles J. Patrissi, Frank C. Walsh, Carlos Ponce de León, Maria G. Medeiros
Rok vydání:	2008
Předmět:	Materials science Inorganic chemistry chemistry.chemical_element Electrolyte Borohydride Electrocatalyst Cathode law.invention Anode chemistry.chemical_compound chemistry law Electrode Cyclic voltammetry Tin
Zdroj:	ECS Transactions. 15:25-49
ISSN:	1938-6737 1938-5862
DOI:	10.1149/1.3046618
Popis:	Developments in direct borohydride fuel cells (DBFC) are considered together with electrolyte stability and the choice of membrane and electrode materials. The cyclic voltammetry of borohydride oxidation was studied at three electrodes: a) gold on carbon, Au/C, b) gold on titanate nanotubes, Au/TiN and (c) gold foil. Similar currents were observed from the three electrodes. A DBFC in a single, 2- and 4-bipolar cell configuration with Au/C anode and Pt/C cathode produced 2.2, 3.2 and 9.6 W showed cell voltages of 1.06, 0.81 and 3 V, respectively. In another single cell, the reduction of peroxide on a Pd/Ir coated microfibrous carbon cathode was catalytically more active than a platinised-carbon one. The maximum power density achieved was 78 mW cm-2 at a cell voltage of 1.09 V. The need for further research is highlighted, particularly into new electrocatalyst materials.
Databáze:	OpenAIRE
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