scholarly journals Testing and Performance Analysis of NASA 5 cm by 5 cm Bi-Supported Solid Oxide Electrolysis Cells Operated in Both Fuel Cell and Steam Electrolysis Modes

2011 ◽  
Author(s):  
R. C. O’Brien ◽  
J. E. O’Brien ◽  
C. M. Stoots ◽  
X. Zhang ◽  
S. C. Farmer ◽  
...  
Keyword(s):  
Performance Analysis ◽  
National Laboratory ◽  
Solid Oxide ◽  
Experimental Demonstration ◽  
Electrolysis Cells ◽  
Solid Oxide Electrolysis ◽  
And Performance ◽  
High Temperature Steam ◽  
Solid Oxide Electrolysis Cells ◽  
Production And Operation

A series of 5 cm by 5 cm bi-supported Solid Oxide Electrolysis Cells (SOEC) were produced by NASA for the Idaho National Laboratory (INL) and tested under the INL High Temperature Steam Electrolysis program. The results from the experimental demonstration of cell operation for both hydrogen production and operation as fuel cells is presented. An overview of the cell technology, test apparatus and performance analysis is also provided.

Syngas production by high temperature steam/CO2 coelectrolysis using solid oxide electrolysis cells

2015 ◽  
Vol 182 ◽  
pp. 341-351 ◽  
Author(s):  
Xinbing Chen ◽  
Chengzhi Guan ◽  
Guoping Xiao ◽  
Xianlong Du ◽  
Jian-Qiang Wang
Keyword(s):  
High Temperature ◽  
Operating Conditions ◽  
Solid Oxide ◽  
Syngas Production ◽  
Electrolysis Cells ◽  
Solid Oxide Electrolysis ◽  
Comparable Performance ◽  
High Temperature Steam ◽  
Shift Reaction ◽  
Solid Oxide Electrolysis Cells

High temperature (HT) steam/CO2 coelectrolysis with solid oxide electrolysis cells (SOECs) using the electricity and heat generated from clean energies is an important alternative for syngas production without fossil fuel consumption and greenhouse gas emissions. Herein, reaction characteristics and the outlet syngas composition of HT steam/CO2 coelectrolysis under different operating conditions, including distinct inlet gas compositions and electrolysis current densities, are systematically studied at 800 °C using commercially available SOECs. The HT coelectrolysis process, which has comparable performance to HT steam electrolysis, is more active than the HT CO2 electrolysis process, indicating the important contribution of the reverse water-gas shift reaction in the formation of CO. The outlet syngas composition from HT steam/CO2 coelectrolysis is very sensitive to the operating conditions, indicating the feasibility of controlling the syngas composition by varying these conditions. Maximum steam and CO2 utilizations of 77% and 76% are achieved at 1.0 A cm−2 with an inlet gas composition of 20% H2/40% steam/40% CO2.

Digester Gas Upgrading to Synthetic Natural Gas in Solid Oxide Electrolysis Cells

2015 ◽  
Vol 29 (3) ◽  
pp. 1641-1652 ◽  
Author(s):  
Guido Lorenzi ◽  
Andrea Lanzini ◽  
Massimo Santarelli
Keyword(s):  
Natural Gas ◽  
Solid Oxide ◽  
Synthetic Natural Gas ◽  
Electrolysis Cells ◽  
Solid Oxide Electrolysis ◽  
Solid Oxide Electrolysis Cells
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