skip to main content

Title: Sol-Gel Based Polybenzimidazole Membranes for Hydrogen Pumping Devices

Electrochemical hydrogen pumping using a high temperature (>100°C) PBI membrane was demonstrated under non-humidified and humidified conditions at ambient pressures. Relatively low voltages were required to operate the pump over a wide range of hydrogen flow rates. The advantages of the high temperature capability were shown by operating the pump on reformate feed gas mixtures containing various amounts of CO and CO{sub 2}. Gas purity measurements on the cathode gas product were conducted and significant reductions in gas impurities were detected. The applicability of the PBI membrane for electrochemical hydrogen pumping and its durability under typical operating conditions was established with tests that lasted for nearly 4000 hours.
Authors:
Publication Date:
OSTI Identifier:
1121336
Report Number(s):
DOE-RPI-J11654
DOE Contract Number:
FG02-05ER46258
Resource Type:
Technical Report
Research Org:
Rensselaer Polytechnic Institute
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
08 HYDROGEN