US2018162727A1PendingUtilityA1

Palladium-platinum system for use as hydrogen storage material and/or electrocatalyst, preferably in fuel-cells

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Assignee: UNIV WARSZAWSKIPriority: May 23, 2015Filed: Dec 8, 2015Published: Jun 14, 2018
Est. expiryMay 23, 2035(~8.9 yrs left)· nominal 20-yr term from priority
Inventors:Adam LeweraPiotr PolczynskiRafal Jurczakowski
B01J 37/0244B01J 35/0033B01J 23/44H01M 4/8657H01M 8/0208C01B 3/0084B01J 23/42H01M 4/92Y02E60/32Y02E60/50H01M 2008/1095C01B 3/0026B01J 35/33
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Claims

Abstract

The present invention relates to palladium-platinum system consisting of palladium layer covered with a platinum overlayer consisting of 1 to 10 platinum monolayers deposited on palladium for use as hydrogen storage. Such system can be used in fuel cells, hydride batteries and supercapacitors. A method for increasing hydrogen absorption kinetics of hydrogen absorption/desorption process is also disclosed.

Claims

exact text as granted — not AI-modified
1 . Palladium-platinum system comprising palladium layer covered with a platinum overlayer consisting of 1 to 10 platinum monolayers deposited on palladium for use as hydrogen storage. 
     
     
         2 . Palladium-platinum system according to  claim 1 , wherein palladium layer is covered with a two-dimensional platinum overlayer consisting of 1 to 3 platinum monolayers. 
     
     
         3 . Palladium-platinum system according to  claim 2 , wherein palladium layer is covered with a two-dimensional platinum overlayer consisting of at most two platinum monolayers. 
     
     
         4 . Palladium-platinum system according to  claim 3 , wherein palladium layer is covered with a two-dimensional platinum overlayer consisting of a platinum monolayer. 
     
     
         5 . Palladium-platinum system according to  claim 1  for use as electrocatalyst. 
     
     
         6 . Palladium-platinum system according to  claim 1  for use in fuel cells or hydride batteries or supercapacitors. 
     
     
         7 . Palladium-platinum system as defined in  claim 1 , wherein palladium-platinum system is deposited on a solid substrate. 
     
     
         8 . Palladium-platinum system according to  claim 7 , wherein the substrate is a metallic substrate. 
     
     
         9 . Palladium-platinum system according to  claim 8 , wherein the substrate is gold substrate. 
     
     
         10 . Palladium-platinum system according to  claim 8 , wherein the substrate is AB5. 
     
     
         11 . A method of increasing hydrogen absorption kinetics of hydrogen absorption/desorption wherein hydrogen storage material is covered with a platinum overlayer consisting of 1 to 10 platinum monolayers 
     
     
         12 . The method of  claim 11 , wherein the platinum overlayer is a two-dimensional platinum overlayer consisting of 1 to 3 platinum monolayers. 
     
     
         13 . The method of  claim 12 , wherein the platinum overlayer is a two-dimensional platinum overlayer consisting of at most two platinum monolayers. 
     
     
         14 . The method of  claim 13 , wherein the platinum overlayer is a two-dimensional platinum overlayer consisting of a single platinum monolayer 
     
     
         15 . The method according to  claim 11 , wherein the hydrogen storage material is palladium. 
     
     
         16 . The method according to  claim 11 , wherein the hydrogen storage material is AB5 alloy.

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