	US 12,034,168 B2
	Composite of cobalt-based perovskite material with negative thermal expansion material, and preparation method of same, and solid oxide fuel cell comprising same
Wei Zhou, Jiangsu (CN); Yuan Zhang, Jiangsu (CN); Chuan Zhou, Jiangsu (CN); Guangming Yang, Jiangsu (CN); and Zongping Shao, Jiangsu (CN)
Assigned to NANJING TECH UNIVERSITY, Jiangsu (CN)
Filed by NANJING TECH UNIVERSITY, Jiangsu (CN)
Filed on Feb. 7, 2022, as Appl. No. 17/666,402.
Claims priority of application No. 202110167529.2 (CN), filed on Feb. 7, 2021.
Prior Publication US 2022/0263097 A1, Aug. 18, 2022
Int. Cl. H01M 4/90 (2006.01); C04B 35/495 (2006.01); C04B 35/626 (2006.01); C04B 35/64 (2006.01); H01M 4/86 (2006.01); H01M 8/12 (2016.01); H01M 8/1246 (2016.01)

CPC H01M 4/9033 (2013.01) [C04B 35/495 (2013.01); C04B 35/6261 (2013.01); C04B 35/62645 (2013.01); C04B 35/64 (2013.01); H01M 8/1246 (2013.01); C04B 2235/326 (2013.01); C04B 2235/3275 (2013.01); C04B 2235/6567 (2013.01); C04B 2235/768 (2013.01); C04B 2235/9607 (2013.01); H01M 2004/8689 (2013.01); H01M 2008/1293 (2013.01); H01M 2300/0074 (2013.01)]

5 Claims

1. A preparation method of a composite of a cobalt-based perovskite material with a negative thermal expansion material, wherein the composite of the cobalt-based perovskite material with the negative thermal expansion material is obtained by combining the negative thermal expansion material with the cobalt-based perovskite material; the negative thermal expansion material is Y₂W₃O₁₂, and the cobalt-based perovskite material is SrNb_0.1Co_0.9O_3-δ; and

the preparation method comprises the following steps: mixing the negative thermal expansion material and the cobalt-based perovskite material to obtain a precursor material, and subjecting the precursor material to calcination;

wherein a content of the negative thermal expansion material in the precursor material is 5 wt % to 40 wt %; and

the calcination is conducted at 600° ° C. to 1,000° ° C. for 1 h to 6 h.