Hydrogen generation from catalytic hydrolysis of sodium borohydride for proton exchange membrane fuel cells

2004 ◽  
Vol 93-95 ◽  
pp. 477-483 ◽  
Author(s):  
Chuan Wu ◽  
Huaming Zhang ◽  
Baolian Yi
Keyword(s):  
Fuel Cells ◽  
Sodium Borohydride ◽  
Proton Exchange Membrane ◽  
Hydrogen Generation ◽  
Proton Exchange ◽  
Catalytic Hydrolysis ◽  
Exchange Membrane ◽  
Hydrolysis Of

A Comparative 1D Analysis of PEM, SO and DB Fuel Cells

2014 ◽  
Author(s):  
Isaac Perez-Raya ◽  
Michael W. Ellis ◽  
Abel Hernandez-Guerrero ◽  
Francisco Elizalde-Blancas ◽  
Carlos U. Gonzalez-Valle ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Sodium Borohydride ◽  
Proton Exchange Membrane ◽  
Numerical Study ◽  
Proton Exchange ◽  
Solid Oxide ◽  
Cathode Side ◽  
Technical Problems ◽  
Exchange Membrane

Although fuel cells represent an attractive alternative for electricity generation, different technical problems, such as the hydrogen storage, have not been solved, as yet. Nowadays direct sodium borohydride fuel cells are considered as a promising technology since NaBH4 (fuel) is a stable, nonflammable and nontoxic liquid solution. In the present study a one-dimensional numerical study of a proton exchange membrane, a solid oxide, and a direct sodium borohydride fuel cell is performed. The objective of this work is to compare qualitatively the fuel cell performance between these technologies. For proton exchange membrane and solid oxide fuel cells there are already established useful models and correlations widely known, and used, to predict the current density and the power generated. Direct Borohydride fuel cells, on the other hand, are still in their early developments; in the present paper DBFCs are analyzed using a novel model. This proposed model for DBFCs includes the prediction of the NaBH4 oxidation in the anode side, the H2O2 reduction in the cathode side and the effect of the solution concentration and temperature on the membrane. It is noteworthy mentioning that this last effect has not been integrated in any of the established models in the current technical literature.

A Kw-Scale Integrated System for On-Demand Hydrogen Generation Using NaBH4 Solution and a Low-Cost Catalyst

2013 ◽  
Vol 664 ◽  
pp. 795-800
Author(s):  
Pouya Pashaie ◽  
Mohsen Shakeri ◽  
Reza Miremadeddin
Keyword(s):  
Fuel Cells ◽  
Proton Exchange Membrane ◽  
Hydrogen Generation ◽  
Low Cost ◽  
Pem Fuel Cells ◽  
Hydrogen Gas ◽  
Proton Exchange ◽  
Integrated System ◽  
On Demand ◽  
Exchange Membrane

Among several hydrogen storage methods for application in fuel cells, on-board hydrogen generation using sodium borohydride (NaBH4; a chemical hydride) for application in proton exchange membrane (PEM) fuel cells can be considered as a low-weight method for portable applications. In this paper, an integrated continuous-flow system for on-demand hydrogen generation from the hydrolysis reaction of the NaBH4 solution in the presence of a low-cost catalyst is proposed. By using the prepared non-noble Co(NO3)2 on porous alpha-alumina support, as catalyst, the cost of the catalyst has cut down considerably. Up to 15 SLPM high-purity hydrogen gas is expected to be generated by this system to supply to a 1 kW-scale proton exchange membrane (PEM) fuel cell stack (H2-air, 40% efficiency).

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