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7122503 
Journal Article 
Design, development and commercialization of gas recombination vent plug for lead acid batteries 
Joshi, SN; Hegde, MS; , 
2017 
INST ELECTROCHEMISTRY AND ENERGY SYSTEMS 
Sofia 
165-168 
WOS:000552724000045 
Gas recombination vent plug for standby Lead acid type batteries has been designed and commercialized. Gas evolution during working of battery requires maintenance. An oxygen & hydrogen gases recombination into water is achieved by using Nobel metals crystalline ionized salts as catalyst. By means of special process these ionized platinum & palladium catalysts are deposited on cordierite honeycomb type structure. The ionized salts provide very high surface area coverage for gas recombination reaction.Vent plug is appropriately designed to house honeycomb structure with in a molded plastic part in such a way that gas vapor condensate run down by gravity through the designated path back into the cell. Studies were done by simulation of various working conditions of standby lead acid batteries. Greater than 99% efficiency is achieved at various working conditions of lead acid batteries. Major advantageous being - no water topping up routine maintenance required, room ventilation, expensive air handling system eliminated along with no acid fumes or corrosive atmosphere in battery room. Lead acid batteries generally emit small amount of hydrogen and oxygen gases when kept on float charging mode in a standby / emergency electrical power system. 
10th International Conference on Lead-Acid Batteries (LABAT) 
, BULGARIA