A proposed method for high efficiency electrical energy storage using solid oxide cells

David M. Bierschenk*, James R. Wilson, Elizabeth Miller, Emma Dutton, Scott A. Barnett

*Corresponding author for this work

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

10 Scopus citations

Abstract

Large-scale electrical energy storage is becoming increasingly necessary due to the continued growth of intermittent renewable sources such as wind and solar. Reversible solid oxide cells (SOCs) have many desirable attributes for this application, but round trip efficiency is expected to be relatively low. Here we use thermodynamic calculations and gas chromatography measurements to demonstrate a reversible SOC storage chemistry where the fuel cycles between H 2O-CO 2-rich and CH 4-H 2-HCh gases, enabled by operating at reduced temperature and/or increased pressure. The CH 4-forming electrolysis reactions are less endothermic than the usual H 2- or CO-forming reactions, thereby allowing an improved round-trip efficiency. SOC requirements for this application are discussed.

Original languageEnglish (US)
Title of host publicationSolid Oxide Fuel Cells 12, SOFC XII
Pages2969-2978
Number of pages10
Edition3 PART 3
DOIs
StatePublished - 2011
Event12th International Symposium on Solid Oxide Fuel Cells, SOFC-XII - 219th ECS Meeting - Montreal, QC, Canada
Duration: May 1 2011May 6 2011

Publication series

NameECS Transactions
Number3 PART 3
Volume35
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

Other12th International Symposium on Solid Oxide Fuel Cells, SOFC-XII - 219th ECS Meeting
CountryCanada
CityMontreal, QC
Period5/1/115/6/11

ASJC Scopus subject areas

  • Engineering(all)

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