A 4 × 4 cm2 Nanoengineered Solid Oxide Electrolysis Cell for Efficient and Durable Hydrogen Production

Xiaofeng Tong, Simona Ovtar, Karen Brodersen, Peter Vang Hendriksen, Ming Chen*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Despite various advantages of high-temperature solid oxide electrolysis cells (SOECs) over their low-temperature competitors, the insufficient long-term durability has prevented the commercialization of SOECs. Here, we address this challenge by employing two nanoengineered electrodes. The O2 electrode consists of a La0.6Sr0.4CoO3−δ (LSC) and Gd,Pr-co-doped CeO2 (CGPO) nanocomposite coating deposited on a Gd-doped CeO2 (CGO) scaffold, and the H2 electrode comprises a Ni/yttria stabilized zirconia (YSZ) electrode modified with a nanogranular CGO coating. The resulting cell with an active area of 4 × 4 cm2 exhibits a current density exceeding 1.2 A cm–2 at 1.3 V and 750 °C for steam electrolysis while also offering excellent long-term durability at 1 A cm–2 with a high steam-to-hydrogen conversion of ∼56%. We further unravel the degradation mechanism of the most commonly used Ni/YSZ electrode under these conditions and describe the mitigation of the discussed mechanism on our nanoengineered electrode. Our findings demonstrate the potential of designing robust SOECs by nanoengineering electrodes through infiltration and have significant implications for the practical integration of SOEC technology in the future sustainable energy system.
Original languageEnglish
JournalA C S Applied Materials and Interfaces
Volume11
Issue number29
Pages (from-to)25996-26004
ISSN1944-8244
DOIs
Publication statusPublished - 2019

Keywords

  • Solid oxide electrolysis cell
  • Hydrogen
  • Infiltration
  • Durability
  • Hydrogen evolution reaction
  • Oxygen evolution reaction

Cite this

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title = "A 4 × 4 cm2 Nanoengineered Solid Oxide Electrolysis Cell for Efficient and Durable Hydrogen Production",
abstract = "Despite various advantages of high-temperature solid oxide electrolysis cells (SOECs) over their low-temperature competitors, the insufficient long-term durability has prevented the commercialization of SOECs. Here, we address this challenge by employing two nanoengineered electrodes. The O2 electrode consists of a La0.6Sr0.4CoO3−δ (LSC) and Gd,Pr-co-doped CeO2 (CGPO) nanocomposite coating deposited on a Gd-doped CeO2 (CGO) scaffold, and the H2 electrode comprises a Ni/yttria stabilized zirconia (YSZ) electrode modified with a nanogranular CGO coating. The resulting cell with an active area of 4 × 4 cm2 exhibits a current density exceeding 1.2 A cm–2 at 1.3 V and 750 °C for steam electrolysis while also offering excellent long-term durability at 1 A cm–2 with a high steam-to-hydrogen conversion of ∼56{\%}. We further unravel the degradation mechanism of the most commonly used Ni/YSZ electrode under these conditions and describe the mitigation of the discussed mechanism on our nanoengineered electrode. Our findings demonstrate the potential of designing robust SOECs by nanoengineering electrodes through infiltration and have significant implications for the practical integration of SOEC technology in the future sustainable energy system.",
keywords = "Solid oxide electrolysis cell, Hydrogen, Infiltration, Durability, Hydrogen evolution reaction, Oxygen evolution reaction",
author = "Xiaofeng Tong and Simona Ovtar and Karen Brodersen and Hendriksen, {Peter Vang} and Ming Chen",
year = "2019",
doi = "10.1021/acsami.9b07749",
language = "English",
volume = "11",
pages = "25996--26004",
journal = "A C S Applied Materials and Interfaces",
issn = "1944-8244",
publisher = "American Chemical Society",
number = "29",

}

A 4 × 4 cm2 Nanoengineered Solid Oxide Electrolysis Cell for Efficient and Durable Hydrogen Production. / Tong, Xiaofeng; Ovtar, Simona; Brodersen, Karen; Hendriksen, Peter Vang; Chen, Ming.

In: A C S Applied Materials and Interfaces, Vol. 11, No. 29, 2019, p. 25996-26004.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - A 4 × 4 cm2 Nanoengineered Solid Oxide Electrolysis Cell for Efficient and Durable Hydrogen Production

AU - Tong, Xiaofeng

AU - Ovtar, Simona

AU - Brodersen, Karen

AU - Hendriksen, Peter Vang

AU - Chen, Ming

PY - 2019

Y1 - 2019

N2 - Despite various advantages of high-temperature solid oxide electrolysis cells (SOECs) over their low-temperature competitors, the insufficient long-term durability has prevented the commercialization of SOECs. Here, we address this challenge by employing two nanoengineered electrodes. The O2 electrode consists of a La0.6Sr0.4CoO3−δ (LSC) and Gd,Pr-co-doped CeO2 (CGPO) nanocomposite coating deposited on a Gd-doped CeO2 (CGO) scaffold, and the H2 electrode comprises a Ni/yttria stabilized zirconia (YSZ) electrode modified with a nanogranular CGO coating. The resulting cell with an active area of 4 × 4 cm2 exhibits a current density exceeding 1.2 A cm–2 at 1.3 V and 750 °C for steam electrolysis while also offering excellent long-term durability at 1 A cm–2 with a high steam-to-hydrogen conversion of ∼56%. We further unravel the degradation mechanism of the most commonly used Ni/YSZ electrode under these conditions and describe the mitigation of the discussed mechanism on our nanoengineered electrode. Our findings demonstrate the potential of designing robust SOECs by nanoengineering electrodes through infiltration and have significant implications for the practical integration of SOEC technology in the future sustainable energy system.

AB - Despite various advantages of high-temperature solid oxide electrolysis cells (SOECs) over their low-temperature competitors, the insufficient long-term durability has prevented the commercialization of SOECs. Here, we address this challenge by employing two nanoengineered electrodes. The O2 electrode consists of a La0.6Sr0.4CoO3−δ (LSC) and Gd,Pr-co-doped CeO2 (CGPO) nanocomposite coating deposited on a Gd-doped CeO2 (CGO) scaffold, and the H2 electrode comprises a Ni/yttria stabilized zirconia (YSZ) electrode modified with a nanogranular CGO coating. The resulting cell with an active area of 4 × 4 cm2 exhibits a current density exceeding 1.2 A cm–2 at 1.3 V and 750 °C for steam electrolysis while also offering excellent long-term durability at 1 A cm–2 with a high steam-to-hydrogen conversion of ∼56%. We further unravel the degradation mechanism of the most commonly used Ni/YSZ electrode under these conditions and describe the mitigation of the discussed mechanism on our nanoengineered electrode. Our findings demonstrate the potential of designing robust SOECs by nanoengineering electrodes through infiltration and have significant implications for the practical integration of SOEC technology in the future sustainable energy system.

KW - Solid oxide electrolysis cell

KW - Hydrogen

KW - Infiltration

KW - Durability

KW - Hydrogen evolution reaction

KW - Oxygen evolution reaction

U2 - 10.1021/acsami.9b07749

DO - 10.1021/acsami.9b07749

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JO - A C S Applied Materials and Interfaces

JF - A C S Applied Materials and Interfaces

SN - 1944-8244

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