Development of solid oxide electrolysis cells for hydrogen production at high current densities

X. F. Tong, P. V. Hendriksen, A. Hauch, M. Chen*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

An ongoing challenge for solid oxide electrolysis cells (SOECs) operated at high current densities, is the considerable long-term degradation of the most commonly used Ni/yttria-stabilized zirconia (YSZ) H2-electrode. In this work, we report a scalable route of infiltrating nano-sized electrocatalysts into the Ni/YSZ electrode of the cell after it has been reduced in a “one-atmosphere-reduction” process to address this challenge. The performance and durability of an infiltrated cell and a non-infiltrated sister-cell are evaluated. The infiltrated cell exhibits significantly enhanced long-term durability at high current densities, with cell voltage degradation rates of 0.028 V kh-1 (2.04 % kh-1) at −1.25 A cm-2 and 0.010 V kh-1 (0.78 % kh-1) at −1.00 A cm-2. These degradation rates are ∼14 times and ∼25 times less than those of the non-infiltrated cell, respectively.
Original languageEnglish
JournalECS Transactions
Volume91
Issue number1
Pages (from-to)2433-2442
Number of pages10
ISSN1938-5862
DOIs
Publication statusPublished - 2019

Cite this

@article{06f97b91c0cd41a99fd7ec6ab8dd4ce8,
title = "Development of solid oxide electrolysis cells for hydrogen production at high current densities",
abstract = "An ongoing challenge for solid oxide electrolysis cells (SOECs) operated at high current densities, is the considerable long-term degradation of the most commonly used Ni/yttria-stabilized zirconia (YSZ) H2-electrode. In this work, we report a scalable route of infiltrating nano-sized electrocatalysts into the Ni/YSZ electrode of the cell after it has been reduced in a “one-atmosphere-reduction” process to address this challenge. The performance and durability of an infiltrated cell and a non-infiltrated sister-cell are evaluated. The infiltrated cell exhibits significantly enhanced long-term durability at high current densities, with cell voltage degradation rates of 0.028 V kh-1 (2.04 {\%} kh-1) at −1.25 A cm-2 and 0.010 V kh-1 (0.78 {\%} kh-1) at −1.00 A cm-2. These degradation rates are ∼14 times and ∼25 times less than those of the non-infiltrated cell, respectively.",
author = "Tong, {X. F.} and Hendriksen, {P. V.} and A. Hauch and M. Chen",
year = "2019",
doi = "10.1149/09101.2433ecst",
language = "English",
volume = "91",
pages = "2433--2442",
journal = "E C S Transactions",
issn = "1938-5862",
publisher = "The Electrochemical Society",
number = "1",

}

Development of solid oxide electrolysis cells for hydrogen production at high current densities. / Tong, X. F.; Hendriksen, P. V.; Hauch, A.; Chen, M.

In: ECS Transactions, Vol. 91, No. 1, 2019, p. 2433-2442.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Development of solid oxide electrolysis cells for hydrogen production at high current densities

AU - Tong, X. F.

AU - Hendriksen, P. V.

AU - Hauch, A.

AU - Chen, M.

PY - 2019

Y1 - 2019

N2 - An ongoing challenge for solid oxide electrolysis cells (SOECs) operated at high current densities, is the considerable long-term degradation of the most commonly used Ni/yttria-stabilized zirconia (YSZ) H2-electrode. In this work, we report a scalable route of infiltrating nano-sized electrocatalysts into the Ni/YSZ electrode of the cell after it has been reduced in a “one-atmosphere-reduction” process to address this challenge. The performance and durability of an infiltrated cell and a non-infiltrated sister-cell are evaluated. The infiltrated cell exhibits significantly enhanced long-term durability at high current densities, with cell voltage degradation rates of 0.028 V kh-1 (2.04 % kh-1) at −1.25 A cm-2 and 0.010 V kh-1 (0.78 % kh-1) at −1.00 A cm-2. These degradation rates are ∼14 times and ∼25 times less than those of the non-infiltrated cell, respectively.

AB - An ongoing challenge for solid oxide electrolysis cells (SOECs) operated at high current densities, is the considerable long-term degradation of the most commonly used Ni/yttria-stabilized zirconia (YSZ) H2-electrode. In this work, we report a scalable route of infiltrating nano-sized electrocatalysts into the Ni/YSZ electrode of the cell after it has been reduced in a “one-atmosphere-reduction” process to address this challenge. The performance and durability of an infiltrated cell and a non-infiltrated sister-cell are evaluated. The infiltrated cell exhibits significantly enhanced long-term durability at high current densities, with cell voltage degradation rates of 0.028 V kh-1 (2.04 % kh-1) at −1.25 A cm-2 and 0.010 V kh-1 (0.78 % kh-1) at −1.00 A cm-2. These degradation rates are ∼14 times and ∼25 times less than those of the non-infiltrated cell, respectively.

U2 - 10.1149/09101.2433ecst

DO - 10.1149/09101.2433ecst

M3 - Journal article

VL - 91

SP - 2433

EP - 2442

JO - E C S Transactions

JF - E C S Transactions

SN - 1938-5862

IS - 1

ER -