IP Library › Granted Patent US 10,978,726
Granted Patent B2
US 10,978,726 · App. 16/406,961 · Granted Apr 13, 2021

Doped scandia stabilized zirconia electrolyte compositions

Inventors: David N. Miller (St. Andrews, GB); Cristian Savaniu (St. Andrews, GB); John T S Irvine (St. Andrews, GB); Tad Armstrong (Burlingame, CA)
Assignee: BLOOM ENERGY CORPORATION
H01M8/1253H01M2008/1293Y02E60/50Y02P70/50
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Quick Facts
Patent No.
US 10,978,726
App. No.
16/406,961
Granted
Apr 13, 2021
Kind
B2
Abstract

A solid oxide fuel cell (SOFC) electrolyte composition includes zirconia stabilized with scandia, and at least one of magnesia, zinc oxide, indium oxide, and gallium oxide, and optionally ceria in addition to the oxides above.

Claims (4)

1. An electrolyte composition for a solid oxide fuel cell, comprising zirconia stabilized with scandia and magnesia;

wherein the electrolyte composition comprises a formula Zr 1-w-x-z Sc w Mg x In z O d , wherein 0.1≤w≤0.18, wherein 0≤x≤0.03, wherein 0.01≤z≤0.12, and wherein 1.8≤d≤2.

2. The electrolyte composition of claim 1 , wherein w=0.171−z, wherein 0.013≤×≤0.014, and wherein 0.018≤z≤0.06.

3. The electrolyte composition of claim 1 , wherein z=0.018 or z=0.036.