High efficiency electrical energy storage using a methane–oxygen solid oxide cell

2011 ◽  
Vol 4 (3) ◽  
pp. 944-951 ◽  
Author(s):  
David M. Bierschenk ◽  
James R. Wilson ◽  
Scott A. Barnett
Keyword(s):  
Energy Storage ◽  
High Efficiency ◽  
Electrical Energy ◽  
Solid Oxide ◽  
Electrical Energy Storage ◽  
Solid Oxide Cell

scholarly journals A Ferric-Air Battery base on Solid Oxide Fuel Cell for Electrical Energy Storage

2013 ◽  
Vol 16 (4) ◽  
pp. 257-262 ◽  
Author(s):  
Ting Luo ◽  
Shaorong Wang ◽  
Le Shao ◽  
Jiqing Qian ◽  
Xiaofeng Ye ◽  
...  
Keyword(s):  
Energy Storage ◽  
Electrical Energy ◽  
Solid Oxide ◽  
Active Materials ◽  
Electrical Energy Storage ◽  
Redox Active ◽  
Air Battery ◽  
Solid Oxide Cell ◽  
Excellent Stability

We report a ferric-air, solid oxide battery that consists of a tubular solid oxide cell with Ca(OH)2/CaO dispersed Fe/FeOx powders integrated as the redox-active materials in the fuel chamber. The key feature here is the use of Ca(OH)2 to prevent agglomeration and coarsening of Fe/FeOx powders, and more importantly to enable in situ production of H2/H2O as the electrochemical active redox couple in the fuel electrode. The proof-of-concept solid oxide battery exhibits an energy capacity of 144 Wh kg-1-Fe at a ferric utilization of 18.8% and excellent stability in ten discharge/charge cycles with a voltage efficiency of 83% that have great potential for improvement. These results showed encouraging promise of the ferric-air, solid oxide batteries for electrical energy storage applications.

A Proposed Method for High Efficiency Electrical Energy Storage Using Solid Oxide Cells

2019 ◽  
Vol 35 (1) ◽  
pp. 2969-2978 ◽  
Author(s):  
David M. Bierschenk ◽  
James R. Wilson ◽  
Elizabeth Miller ◽  
Emma Dutton ◽  
Scott A. Barnett
Keyword(s):  
Energy Storage ◽  
High Efficiency ◽  
Electrical Energy ◽  
Solid Oxide ◽  
Electrical Energy Storage

Operating Conditions and System Considerations for a Reversible Solid Oxide Cell System for Electrical Energy Storage

2014 ◽  
Author(s):  
Christopher H. Wendel ◽  
Pejman Kazempoor ◽  
Robert J. Braun
Keyword(s):  
Energy Storage ◽  
Thermal Management ◽  
Management Strategies ◽  
Electrical Energy ◽  
Cell System ◽  
Operating Conditions ◽  
Solid Oxide ◽  
System Level ◽  
Widespread Application ◽  
Electrical Energy Storage

Electrical energy storage (EES) is an important component of the future electric grid. Given that no other widely available technology meets all the EES requirements, reversible (or regenerative) solid oxide cells (ReSOCs) working in both fuel cell (power producing) and electrolysis (fuel producing) modes are envisioned as a technology capable of providing highly efficient and cost-effective EES. However, there are still many challenges from cell materials development to system level operation of ReSOCs that should be addressed before widespread application. One particular challenge of this novel system is establishing effective thermal management strategies to maintain the high conversion efficiency of the ReSOC. The system presented in this paper employs a thermal management strategy of promoting exothermic methanation in the ReSOC stack to offset the endothermic electrolysis reactions during charging mode (fuel producing) while also enhancing the energy density of the stored gases. Modeling and parametric analysis of an energy storage concept is performed using a thermodynamic system model coupled with a physically based ReSOC stack model. Results indicate that roundtrip efficiencies greater than 70% can be achieved at intermediate stack temperature (∼680°C) and pressure (∼20 bar). The optimal operating conditions result from a tradeoff between high stack efficiency and high parasitic balance of plant power.

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