Titania supported platinum catalyst with high electrocatalytic activity and stability for polymer electrolyte membrane fuel cell

2011 ◽  
Vol 102 (1-2) ◽  
pp. 71-77 ◽  
Author(s):  
Sheng-Yang Huang ◽  
Prabhu Ganesan ◽  
Branko N. Popov
Keyword(s):  
Fuel Cell ◽  
Polymer Electrolyte ◽  
Electrocatalytic Activity ◽  
Platinum Catalyst ◽  
Polymer Electrolyte Membrane ◽  
Electrolyte Membrane ◽  
Supported Platinum ◽  
Supported Platinum Catalyst

scholarly journals Lifetime of Catalyst under Voltage Cycling in Polymer Electrolyte Fuel Cell Due to Platinum Oxidation and Dissolution

Technologies ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 80
Author(s):  
Victor A. Kovtunenko ◽  
Larisa Karpenko-Jereb
Keyword(s):  
Fuel Cell ◽  
Polymer Electrolyte ◽  
Platinum Catalyst ◽  
Polymer Electrolyte Membrane ◽  
Reaction Diffusion ◽  
Operating Conditions ◽  
Polymer Electrolyte Fuel Cell ◽  
Stress Tests ◽  
One Dimensional ◽  
Electrolyte Membrane

The durability of a platinum catalyst in a polymer electrolyte membrane fuel cell is studied at various operating conditions with respect to the different electric potential difference (called voltage) applied in accelerated stress tests. The electrochemical reactions of Pt ion dissolution and Pt oxide coverage of the catalyst lead to the degradation of platinum described by a one-dimensional Holby–Morgan model. The theoretical study of the underlying reaction–diffusion system with the nonlinear reactions is presented by numerical simulations which allow to predict a lifetime of the catalyst under applied voltage cycling. The computer simulation investigates how the Pt mass loss depends on the voltage slope and the upper potential level in cycles.

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