Advanced CuCl electrolyzer for hydrogen production via the Cu-Cl thermochemical cycle

S. Kim, R. S. Schatz, S. Khurana, M. V. Fedkin, C. Wang, S. N. Lvov

Research output: Chapter in Book/Report/Conference proceedingConference contribution

11 Scopus citations

Abstract

The Cu-Cl thermochemical cycle is among the most attractive technologies for hydrogen production due to its high efficiency and moderate temperature requirements. In this study, the H 2 producing reaction of the cycle, CuCl(aq) electrolysis, was investigated in a recently developed electrolyzer using a new type of double layer Nafion 117 membrane. Enhanced MEA durability allowed the system to operate at 80°C for an extended period of time with continuous anolyte cycling and regeneration. An applied potential of 0.7 V was needed to produce the current density of about 0.12 A/cm 2, and the system maintained performance over a period of 100 hours with no substantial decline of hydrogen production rates. Linear polarization and electrochemical impedance spectroscopy were used to monitor the electrolyzer performance over time. Further research is underway to optimize the process parameters and MEA fabrication to extend the electrolyzer life time and current density.

Original languageEnglish (US)
Title of host publicationBatteries and Energy Technology (General) - 219th ECS Meeting
Pages257-265
Number of pages9
Edition32
DOIs
Publication statusPublished - Dec 1 2011
EventBatteries and Energy Technology Joint General Session - 219th ECS Meeting - Montreal, QC, Canada
Duration: May 1 2011May 6 2011

Publication series

NameECS Transactions
Number32
Volume35
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

OtherBatteries and Energy Technology Joint General Session - 219th ECS Meeting
CountryCanada
CityMontreal, QC
Period5/1/115/6/11

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Kim, S., Schatz, R. S., Khurana, S., Fedkin, M. V., Wang, C., & Lvov, S. N. (2011). Advanced CuCl electrolyzer for hydrogen production via the Cu-Cl thermochemical cycle. In Batteries and Energy Technology (General) - 219th ECS Meeting (32 ed., pp. 257-265). (ECS Transactions; Vol. 35, No. 32). https://doi.org/10.1149/1.3655709