Highly durable solid oxide fuel cells: Suppressing chemical degradation: Via rational design of a diffusion-blocking layer

Seunghwan Lee, Sanghyeok Lee, Hyo Jin Kim, Sung Min Choi, Hyegsoon An, Mi Young Park, Jisu Shin, Jung Hoon Park, Junsung Ahn, Donghwan Kim, Ho Il Ji, Hyoungchul Kim, Ji Won Son, Jong Ho Lee, Byung Kook Kim, Hae Weon Lee, Jongsup Hong, Dongwook Shin, Kyung Joong Yoon

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Solid oxide fuel cell (SOFC) technology offers tremendous potential for highly efficient and clean power generation. However, its commercialization has lagged owing to the lack of long-term stability. Among the various sources of performance degradation, the interdiffusion between the cathode and electrolyte has been identified as a predominant factor. Herein, we demonstrate a highly reliable diffusion-blocking layer that completely suppresses detrimental chemical interactions at elevated temperatures. This diffusion-blocking layer is constructed via a bilayer approach, in which the top and bottom layers perform individual functions to precisely control the bulk and interfacial properties. Harnessing two types of specially designed nanoparticles for each part enables the realization of the desired film structure. Consequently, the formation of insulating phases and decomposition of the cathode are effectively prevented, resulting in a remarkable improvement in performance and stability. The scalability and feasibility of mass production are verified via the fabrication of large cells (10 cm × 10 cm) and a multi-cell stack. The stack in which the bilayer technique is implemented exhibits an extremely low degradation rate of 0.23% kh-1, which fulfills the strict lifetime requirement for market penetration. This work highlights a scalable, cost-effective, and reproducible method for the production of highly durable multilayer energy devices, including SOFCs.

Original languageEnglish
Pages (from-to)15083-15094
Number of pages12
JournalJournal of Materials Chemistry A
Volume6
Issue number31
DOIs
Publication statusPublished - 2018 Jan 1

Fingerprint

Solid oxide fuel cells (SOFC)
Cathodes
Degradation
Electrolytes
Power generation
Scalability
Multilayers
Nanoparticles
Decomposition
Fabrication
Costs
Temperature

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

Cite this

Lee, Seunghwan ; Lee, Sanghyeok ; Kim, Hyo Jin ; Choi, Sung Min ; An, Hyegsoon ; Park, Mi Young ; Shin, Jisu ; Park, Jung Hoon ; Ahn, Junsung ; Kim, Donghwan ; Ji, Ho Il ; Kim, Hyoungchul ; Son, Ji Won ; Lee, Jong Ho ; Kim, Byung Kook ; Lee, Hae Weon ; Hong, Jongsup ; Shin, Dongwook ; Yoon, Kyung Joong. / Highly durable solid oxide fuel cells : Suppressing chemical degradation: Via rational design of a diffusion-blocking layer. In: Journal of Materials Chemistry A. 2018 ; Vol. 6, No. 31. pp. 15083-15094.
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abstract = "Solid oxide fuel cell (SOFC) technology offers tremendous potential for highly efficient and clean power generation. However, its commercialization has lagged owing to the lack of long-term stability. Among the various sources of performance degradation, the interdiffusion between the cathode and electrolyte has been identified as a predominant factor. Herein, we demonstrate a highly reliable diffusion-blocking layer that completely suppresses detrimental chemical interactions at elevated temperatures. This diffusion-blocking layer is constructed via a bilayer approach, in which the top and bottom layers perform individual functions to precisely control the bulk and interfacial properties. Harnessing two types of specially designed nanoparticles for each part enables the realization of the desired film structure. Consequently, the formation of insulating phases and decomposition of the cathode are effectively prevented, resulting in a remarkable improvement in performance and stability. The scalability and feasibility of mass production are verified via the fabrication of large cells (10 cm × 10 cm) and a multi-cell stack. The stack in which the bilayer technique is implemented exhibits an extremely low degradation rate of 0.23{\%} kh-1, which fulfills the strict lifetime requirement for market penetration. This work highlights a scalable, cost-effective, and reproducible method for the production of highly durable multilayer energy devices, including SOFCs.",
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Lee, S, Lee, S, Kim, HJ, Choi, SM, An, H, Park, MY, Shin, J, Park, JH, Ahn, J, Kim, D, Ji, HI, Kim, H, Son, JW, Lee, JH, Kim, BK, Lee, HW, Hong, J, Shin, D & Yoon, KJ 2018, 'Highly durable solid oxide fuel cells: Suppressing chemical degradation: Via rational design of a diffusion-blocking layer', Journal of Materials Chemistry A, vol. 6, no. 31, pp. 15083-15094. https://doi.org/10.1039/c8ta04974b

Highly durable solid oxide fuel cells : Suppressing chemical degradation: Via rational design of a diffusion-blocking layer. / Lee, Seunghwan; Lee, Sanghyeok; Kim, Hyo Jin; Choi, Sung Min; An, Hyegsoon; Park, Mi Young; Shin, Jisu; Park, Jung Hoon; Ahn, Junsung; Kim, Donghwan; Ji, Ho Il; Kim, Hyoungchul; Son, Ji Won; Lee, Jong Ho; Kim, Byung Kook; Lee, Hae Weon; Hong, Jongsup; Shin, Dongwook; Yoon, Kyung Joong.

In: Journal of Materials Chemistry A, Vol. 6, No. 31, 01.01.2018, p. 15083-15094.

Research output: Contribution to journalArticle

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T1 - Highly durable solid oxide fuel cells

T2 - Suppressing chemical degradation: Via rational design of a diffusion-blocking layer

AU - Lee, Seunghwan

AU - Lee, Sanghyeok

AU - Kim, Hyo Jin

AU - Choi, Sung Min

AU - An, Hyegsoon

AU - Park, Mi Young

AU - Shin, Jisu

AU - Park, Jung Hoon

AU - Ahn, Junsung

AU - Kim, Donghwan

AU - Ji, Ho Il

AU - Kim, Hyoungchul

AU - Son, Ji Won

AU - Lee, Jong Ho

AU - Kim, Byung Kook

AU - Lee, Hae Weon

AU - Hong, Jongsup

AU - Shin, Dongwook

AU - Yoon, Kyung Joong

PY - 2018/1/1

Y1 - 2018/1/1

N2 - Solid oxide fuel cell (SOFC) technology offers tremendous potential for highly efficient and clean power generation. However, its commercialization has lagged owing to the lack of long-term stability. Among the various sources of performance degradation, the interdiffusion between the cathode and electrolyte has been identified as a predominant factor. Herein, we demonstrate a highly reliable diffusion-blocking layer that completely suppresses detrimental chemical interactions at elevated temperatures. This diffusion-blocking layer is constructed via a bilayer approach, in which the top and bottom layers perform individual functions to precisely control the bulk and interfacial properties. Harnessing two types of specially designed nanoparticles for each part enables the realization of the desired film structure. Consequently, the formation of insulating phases and decomposition of the cathode are effectively prevented, resulting in a remarkable improvement in performance and stability. The scalability and feasibility of mass production are verified via the fabrication of large cells (10 cm × 10 cm) and a multi-cell stack. The stack in which the bilayer technique is implemented exhibits an extremely low degradation rate of 0.23% kh-1, which fulfills the strict lifetime requirement for market penetration. This work highlights a scalable, cost-effective, and reproducible method for the production of highly durable multilayer energy devices, including SOFCs.

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