1
|
Nam S, Kim J, Kim H, Ahn S, Jeon S, Choi Y, Park BK, Jung W. Revitalizing Oxygen Reduction Reactivity of Composite Oxide Electrodes via Electrochemically Deposited PrO x Nanocatalysts. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2307286. [PMID: 38516842 DOI: 10.1002/adma.202307286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Revised: 03/06/2024] [Indexed: 03/23/2024]
Abstract
Solid oxide fuel cells that operate at intermediate temperatures require efficient catalysts to enhance the inherently poor electrochemical activity of the composite electrodes. Here, a simple and practical electrochemical deposition method is presented for fabricating a PrOx overlayer on lanthanum strontium manganite-yttria-stabilized zirconia (LSM-YSZ) composite electrodes. The method requires less than four minutes for completion and can be carried out under at ambient temperature and pressure. Crucially, the treatment significantly improves the electrode's performance without requiring heat treatment or other supplementary processes. The PrOx-coated LSM-YSZ electrode exhibits an 89% decrease in polarization resistance at 650 °C (compared to an untreated electrode), maintaining a tenfold reduction after ≈400 h. Transmission line model analysis using impedance spectra confirms how PrOx coating improved the oxygen reduction reaction activity. Further, tests with anode-supported single cells reveal an outstanding peak power density compared to those of other LSM-YSZ-based cathodes (e.g., 418 mW cm-2 at 650 °C). Furthermore, it is demonstrated that multicomponent coating, such as (Pr,Ce)Ox, can also be obtained with this method. Overall, the observations offer a promising route for the development of high-performance solid oxide fuel cells.
Collapse
Affiliation(s)
- Seongwoo Nam
- Department of Materials Science and Engineering, Korea Advanced Insititute of Science and Technology (KAIST) 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Jinwook Kim
- Department of Materials Science and Engineering, Korea Advanced Insititute of Science and Technology (KAIST) 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Hyunseung Kim
- Department of Materials Science and Engineering, Korea Advanced Insititute of Science and Technology (KAIST) 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Sejong Ahn
- Department of Materials Science and Engineering, Korea Advanced Insititute of Science and Technology (KAIST) 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - SungHyun Jeon
- Department of Materials Science and Engineering, Korea Advanced Insititute of Science and Technology (KAIST) 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Yoonseok Choi
- Hydrogen Convergence Materials Laboratory, Korea Institute of Energy Research (KIER), Gajeong-ro, Yuseong-gu, Daejeon, 34129, Republic of Korea
| | - Beom-Kyeong Park
- School of Materials Science and Engineering, Pusan National University, 2, Busandaehak-ro-63-beon-gil, Geumjeong-gu, Busan, 46241, Republic of Korea
| | - WooChul Jung
- Department of Materials Science and Engineering, Korea Advanced Insititute of Science and Technology (KAIST) 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| |
Collapse
|
2
|
Song L, Chen D, Pan J, Hu X, Shen X, Huan Y, Wei T. B-Site Super-Excess Design Sr 2V 0.4Fe 0.9Mo 0.7O 6-δ-Ni 0.4 as a Highly Active and Redox-Stable Solid Oxide Fuel Cell Anode. ACS APPLIED MATERIALS & INTERFACES 2023; 15:48296-48303. [PMID: 37812387 DOI: 10.1021/acsami.3c11271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
In-situ exsolution type perovskites as solid oxide fuel cell (SOFCs) anode materials have received widespread attention because of their excellent catalytic activity. In this study, excessive NiO is introduced to the Sr2V0.4Fe0.9Mo0.7O6-δ (SVFMO) perovskite with the B-site excess design, and in-situ growth of FeNi3 alloy nanoparticles is induced in the reducing atmosphere to form the Sr2V0.4Fe0.9Mo0.7O6-δ-Ni0.4 (SVFMO-Ni0.4) composite anode. Here, with H2 or CH4 as SOFCs fuel gas, the formation of FeNi3 nanoparticles further enhances the catalytic ability. Compared with SVFMO, the maximum power density (Pmax) of Sr2V0.4Fe0.9Mo0.7O6-δ-Ni0.4 (SVFMO-Ni0.4) increases from 538 to 828 mW cm-2 at 850 °C with hydrogen as the fuel gas, and the total polarization resistance (RP) decreases from 0.23 to 0.17 Ω cm2. In addition, the long-term operational stability of the SVFMO-Ni0.4 anode shows no apparent performance degradation for more than 300 h. Compared with SVFMO, the Pmax of SVFMO-Ni0.4 increases from 138 to 464 mW cm-2 with methane as fuel gas, and the RP decreases from 1.21 to 0.29 Ω cm2.
Collapse
Affiliation(s)
- Lemei Song
- School of Materials Science and Engineering, University of Jinan, Jinan 250022, China
| | - Dezhi Chen
- School of Materials Science and Engineering, University of Jinan, Jinan 250022, China
| | - Jianlong Pan
- School of Materials Science and Engineering, University of Jinan, Jinan 250022, China
| | - Xun Hu
- School of Materials Science and Engineering, University of Jinan, Jinan 250022, China
| | - Xuesong Shen
- Shandong Guochuang Fuel Cell Technology Innovation Center Co., Ltd., Weifang, Shandong 261061, China
| | - Yu Huan
- School of Materials Science and Engineering, University of Jinan, Jinan 250022, China
| | - Tao Wei
- School of Materials Science and Engineering, University of Jinan, Jinan 250022, China
| |
Collapse
|
3
|
Niu Y, Huo W, Yu Y, Li W, Chen Y, Lv W. Cathode infiltration with enhanced catalytic activity and durability for intermediate-temperature solid oxide fuel cells. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.07.037] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
4
|
Kalinina E, Pikalova E. Opportunities, Challenges and Prospects for Electrodeposition of Thin-Film Functional Layers in Solid Oxide Fuel Cell Technology. MATERIALS 2021; 14:ma14195584. [PMID: 34639981 PMCID: PMC8509600 DOI: 10.3390/ma14195584] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 09/16/2021] [Accepted: 09/23/2021] [Indexed: 02/06/2023]
Abstract
Electrolytic deposition (ELD) and electrophoretic deposition (EPD) are relevant methods for creating functional layers of solid oxide fuel cells (SOFCs). This review discusses challenges, new findings and prospects for the implementation of these methods, with the main emphasis placed on the use of the ELD method. Topical issues concerning the formation of highly active SOFC electrodes using ELD, namely, the electrochemical introduction of metal cations into a porous electrode backbone, the formation of composite electrodes, and the electrochemical synthesis of perovskite-like electrode materials are considered. The review presents examples of the ELD formation of the composite electrodes based on porous platinum and silver, which retain high catalytic activity when used in the low-temperature range (400–650 °C). The features of the ELD/EPD co-deposition in the creation of nanostructured electrode layers comprising metal cations, ceramic nanoparticles, and carbon nanotubes, and the use of EPD to create oriented structures are also discussed. A separate subsection is devoted to the electrodeposition of CeO2-based film structures for barrier, protective and catalytic layers using cathodic and anodic ELD, as well as to the main research directions associated with the deposition of the SOFC electrolyte layers using the EPD method.
Collapse
Affiliation(s)
- Elena Kalinina
- Laboratory of Complex Electrophysic Investigations, Institute of Electrophysics, Ural Branch of the Russian Academy of Sciences, 620016 Yekaterinburg, Russia
- Department of Physical and Inorganic Chemistry, Institute of Natural Sciences and Mathematics, Ural Federal University, 620002 Yekaterinburg, Russia
- Correspondence: (E.K.); (E.P.); Tel.: +7-343-267-8782 (E.K.); +7-343-362-3194 (E.P.)
| | - Elena Pikalova
- Laboratory of Solid Oxide Fuel Cells, Institute of High Temperature Electrochemistry, Ural Branch of the Russian Academy of Sciences, 620137 Yekaterinburg, Russia
- Department of Environmental Economics, Graduate School of Economics and Management, Ural Federal University, 620002 Yekaterinburg, Russia
- Correspondence: (E.K.); (E.P.); Tel.: +7-343-267-8782 (E.K.); +7-343-362-3194 (E.P.)
| |
Collapse
|
5
|
Li Z, Li M, Zhu Z. Perovskite Cathode Materials for Low-Temperature Solid Oxide Fuel Cells: Fundamentals to Optimization. ELECTROCHEM ENERGY R 2021. [DOI: 10.1007/s41918-021-00098-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|