A nanoarchitectured cermet composite with extremely low Ni content for stable high-performance solid oxide fuel cells. (March 2021)

• Record Type: Journal Article
• Authors: Park, Jung Hoon; Lee, Jong-Ho; Yoon, Kyung Joong; Kim, Hyoungchul; Ji, Ho-Il; Yang, Sungeun; Park, Sangbaek; Han, Seung Min; Son, Ji-Won
• Is Part Of: Acta materialia. Volume 206(2021)
• Publication Date: 2021-03
• Subjects: solid oxide fuel cells -- anodes -- reduction–oxidation cycles -- nanostructures -- Ni-GDC; Materials -- Periodicals; Materials science -- Periodicals; Materials -- Mechanical properties -- Periodicals; Metallurgy -- Periodicals; Chemistry, Inorganic -- Periodicals; 620.112
• DOI: 10.1016/j.actamat.2020.116580
• Languages: English
• ISSNs: 1359-6454

Abstract

ABSTRACT: A strategy for improving the stability of nickel-based solid oxide fuel cell (SOFC) anodes via compositional and microstructural engineering is presented. Ni content was reduced to 2 vol%, and nanosized Ni particles were uniformly dispersed in a mixed ionic-electronic conducting matrix comprising gadolinium-doped ceria (GDC) using a thin-film technique. Remarkable stability with no performance deterioration even after 100 reduction-oxidation cycles could be observed for the optimized nanostructured anodes. Cell performance at 500°C was enhanced, exceeding 650 mW/cm 2 . This study offers valuable insights for enhancing the durability, performance, and productivity of SOFCs. Graphical abstracts: Image, graphical abstract