Patent ID: 9186624
Filing Date: 2015-11-17
Classification: B01D,C01B,C25B,H01M,Y02B,Y02E,Y02P,Y02T

Abstract:
1. A method of producing hydrogen gas meeting a predetermined threshold of purity, comprising: transferring a quantity of a hydrogen gas mixture generated by a hydrogen supplier through an electrochemical hydrogen pump, wherein the hydrogen gas mixture has not previously been passed through any electrochemical cell, and wherein the electrochemical hydrogen pump includes an anode, a cathode, and an electrolyte membrane located between the anode and the cathode; separating a quantity of hydrogen gas from the hydrogen gas mixture by transferring the hydrogen gas from the anode, through the electrolyte membrane, to the cathode, wherein a voltage required to operate the pump increases as an amount of non-hydrogen substantially prevented from passing through the membrane increases; purging the anode of the non-hydrogen in the mixture that was prevented from passing through the membrane, wherein a controller controls timing of the purging based on a predetermined increase in the voltage required to operate the pump; collecting the hydrogen gas from the cathode, wherein the collected hydrogen gas at least meets the predetermined threshold of purity; and producing a full, written warranty that the collected hydrogen gas meets industry standard SAE J2719 and has a purity that is at least substantially equal to the predetermined threshold of purity, wherein the predetermined threshold of purity is at least 99%.