Soomin Choi, Janghyun Lim, Gyeong Duk Nam, Gahyeon Lee, Young-il Kown, Hyeon Jin Lee, John T. S. Irvine, Tae Ho Shin, Jongsup Hong, Jong Hoon Joo
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引用次数: 0
Abstract
Solid oxide fuel cells (SOFCs) have garnered significant interest as energy conversion systems. One of the primary challenges SOFCs face is the high vulnerability of ceramics to thermal stress, which results in slow startup/shutdown cycles. In this study, by controlling the intrinsic and extrinsic properties, we fabricated an SOFC capable of rapidly reaching operating temperatures exceeding 1173 K within a few seconds. 3YSZ (3 mol % yttria-stabilized zirconia), which has the highest mechanical fracture strength among available electrolyte materials, was used. By employing tape casting, the thickness was minimized to approximately 20 μm, resulting in an SOFC with excellent thermal shock resistance. The designed cell exhibits outstanding flexibility, providing a competitive advantage in mitigating thermal bending-induced stress. Experimental and theoretical analyses confirmed that the designed cell operated stably without crack formation, reaching its operational temperature within 3 s. Furthermore, this study verified the stability and durability of the startup/shutdown cycles, which were achieved within seconds for over 100 cycles. These outcomes represent a milestone in tackling the intrinsic thermal shock vulnerabilities of ceramics, contributing significantly to the development of SOFC technologies and, more generally, of better heat-resistant ceramics.
ACS Energy Letters Energy-Renewable Energy, Sustainability and the Environment
CiteScore
31.20
自引率
5.00%
发文量
469
审稿时长
1 months
期刊介绍:
ACS Energy Letters is a monthly journal that publishes papers reporting new scientific advances in energy research. The journal focuses on topics that are of interest to scientists working in the fundamental and applied sciences. Rapid publication is a central criterion for acceptance, and the journal is known for its quick publication times, with an average of 4-6 weeks from submission to web publication in As Soon As Publishable format.
ACS Energy Letters is ranked as the number one journal in the Web of Science Electrochemistry category. It also ranks within the top 10 journals for Physical Chemistry, Energy & Fuels, and Nanoscience & Nanotechnology.
The journal offers several types of articles, including Letters, Energy Express, Perspectives, Reviews, Editorials, Viewpoints and Energy Focus. Additionally, authors have the option to submit videos that summarize or support the information presented in a Perspective or Review article, which can be highlighted on the journal's website. ACS Energy Letters is abstracted and indexed in Chemical Abstracts Service/SciFinder, EBSCO-summon, PubMed, Web of Science, Scopus and Portico.