Vertical-cavity surface-emitting laser (VCSEL)-based ultrafast photonic sintering of solid oxide fuel cells (SOFCs): prospects for time-efficient/two-dimensional scalability to large-sized SOFCs

Kim, Jaehwan; Rehman, Saeed Ur; Lee, Myeong-Ill; Hussain, Amjad; Noh, Youngsu; Oh, Jungkeun; Ku, Wonseck; Kwak, Na-Eui; Kim, Do-Hyeong; Hwang, Heesu; Yoon, Heesung; Park, Seung Ho; Lee, Seung‐Bok; Hwang, Jin‐Ha

doi:10.1039/d3ta00602f

Cited by 7 publications

(1 citation statement)

References 36 publications

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“…14 In our review paper, we specically address the durability issues associated with SOFCs, aiming to accelerate the commercialization of this versatile technology. [15][16][17][18][19] Fuel cell degradation occurs due to the gradual loss of intrinsic conductivity during operation or the formation of insulating phases. A research study demonstrated that the intrinsic conductivities of various ceramics employed in SOFCs also decline as the operation progresses.…”

Section: Introductionmentioning

confidence: 99%

Improving the durability of cobaltite cathode of solid oxide fuel cells – a review

Mehdi,

Hussain,

Song

et al. 2023

RSC Adv.

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Section: Introductionmentioning

confidence: 99%

Improving the durability of cobaltite cathode of solid oxide fuel cells – a review

Mehdi,

Hussain,

Song

et al. 2023

RSC Adv.

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Dual‐Phase Reaction Sintering for Overcoming the Inherent Sintering Ability of Refractory Electrolytes in Protonic Ceramic Cells

Kim,

Yun,

Lee

et al. 2024

Advanced Energy Materials

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The proton‐conducting oxides, widely employed as electrolytes in ceramic electrochemical cells, exhibit remarkable proton conductivity that facilitates efficient energy conversion processes. However, their inherent refractory nature poses a challenge in producing chemically stoichiometric and physically dense electrolytes within devices. Here a novel approach is presented, dual‐phase reaction sintering, which can overcome the inherent low sintering ability of the representative BaCeO3‐δ‒BaZrO3‐δ proton conducting oxides. This approach involves the simultaneous transformation of a two‐phase mixture (comprising fast‐sintering and slow‐sintering phases) into a complete single‐phase solid solution compound, along with the densification of the electrolyte, all accomplished within a single‐step heating cycle. During the dual‐phase reaction sintering process, the grains of the fast‐sintering phase experience rapid growth owing to their intrinsic superior sintering ability. Additionally, this growth is augmented by the Ostwald ripening behavior manifested by the smaller slow‐sintering phase. This synergistic strategy is validated using BaCe0.4Zr0.4Y0.1Yb0.1O3‐δ, and its applicability in electrochemical cells is demonstrated, resulting in a significant enhancement in performance. These findings offer insights into streamlining the preparation of refractory ion‐conducting ceramic electrolytes while maintaining their intrinsic properties for practical applications.

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Co-free and Sr-free double-perovskite oxide PrBaFe1.9Nb0.1O5+δ as a potential electrode material for symmetrical solid oxide fuel cells

Wang,

Qi,

Shan

et al. 2024

Ionics

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Vertical-cavity surface-emitting laser (VCSEL)-based ultrafast photonic sintering of solid oxide fuel cells (SOFCs): prospects for time-efficient/two-dimensional scalability to large-sized SOFCs

Abstract: 980 nm VCSEL illumination eliminates the organic additives and densifies the laminated multilayered SOFC NiO–YSZ|NiO–ScCeSZ|ScCeSZ|GDC|GDCscaffold in just 2.42 h compared to >100 h needed for the conventional thermal sintering process.

Cited by 7 publications

References 36 publications

Improving the durability of cobaltite cathode of solid oxide fuel cells – a review

Improving the durability of cobaltite cathode of solid oxide fuel cells – a review

Dual‐Phase Reaction Sintering for Overcoming the Inherent Sintering Ability of Refractory Electrolytes in Protonic Ceramic Cells

Co-free and Sr-free double-perovskite oxide PrBaFe1.9Nb0.1O5+δ as a potential electrode material for symmetrical solid oxide fuel cells

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