Optimization of the cerium-hydrogen redox flow cell
The Ce—H2 redox flow cell is optimized using commercially-available cell materials. Cell performance is found to be sensitive to the upper charge cutoff voltage, membrane boiling pretreatment, methanesulfonic-acid concentration, (+) electrode surface area and flow pattern, and operating temperature. Performance is relatively insensitive to membrane thickness, Cerium concentration, and all features of the (−) electrode including hydrogen flow. Cell performance appears to be limited by mass transport and kinetics in the cerium (+) electrode. Maximum discharge power of 895 mW cm−2 was observed at 60° C.; an energy efficiency of 90% was achieved at 50° C. The Ce—H2 cell is promising for energy storage assuming one can optimize Ce reaction kinetics and electrolyte.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-05CH11231
- Assignee:
- The Regents of the University of California (Oakland, CA)
- Patent Number(s):
- 10,424,804
- Application Number:
- 15/582,225
- OSTI ID:
- 1576292
- Resource Relation:
- Patent File Date: 2017 Apr 28
- Country of Publication:
- United States
- Language:
- English
Polymer Electrolyte for a Direct Oxidation Fuel Cell, Method of Preparing the Same, and Direct Oxidation Fuel Cell Comprising the Same
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patent-application | November 2006 |
Metal halide redox flow battery
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patent-application | November 2005 |
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