Stability of Ceramic Matrix Materials in Molten Hydroxide Under Oxidizing and Reducing Conditions

M. Anisur; Ashish Aphale; Michael Reisert; Pawan Dubey; Su Jeong Heo; Junsung Hong; Kailash Patil; Hui Xu; Chao-Yi Yuh; Prabhakar Singh

doi:10.1016/j.ijhydene.2020.08.182

Stability of Ceramic Matrix Materials in Molten Hydroxide Under Oxidizing and Reducing Conditions

M. Anisur, Ashish Aphale, Michael Reisert, Pawan Dubey, Su Jeong Heo, Junsung Hong, Kailash Patil, Hui Xu, Chao-Yi Yuh, Prabhakar Singh

Materials Science

Research output: Contribution to journal › Article › peer-review

3 Scopus Citations

Abstract

The degradation mechanism of ceramic matrix materials used as molten hydroxide electrolyte support for steam electrolysis cells, is not well documented. In this study, we have investigated the structural and chemical stability of non-oxide and oxide ceramics (SiC, YSZ, Li2ZrO3, LiAlO2, and SrZrO3) in the presence of molten hydroxide under oxidizing and reducing conditions with humidity levels of 3 and 85% at 550 °C. SiC, YSZ, Li2ZrO3 and LiAlO2 showed structural and chemical changes due to dissolution of the ceramic particles in the hydroxide melt followed by precipitation. The SrZrO3 powder, on the other hand, remained both chemically and structurally stable during 500 h test under both oxidizing and reducing atmospheres. The findings of a stable ceramic matrix in molten hydroxide contribute to the enhancement of the durability and performance of intermediate temperature water electrolysis system.

Original language	American English
Pages (from-to)	14898-14912
Number of pages	15
Journal	International Journal of Hydrogen Energy
Volume	46
Issue number	28
DOIs	https://doi.org/10.1016/j.ijhydene.2020.08.182
State	Published - 2021

NREL Publication Number

NREL/JA-5K00-77963

Keywords

ceramic matrix stability
high-temperature water electrolysis
molten hydroxide
phase change

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@article{434cdeee49da4badb4570d7591caa921,

title = "Stability of Ceramic Matrix Materials in Molten Hydroxide Under Oxidizing and Reducing Conditions",

abstract = "The degradation mechanism of ceramic matrix materials used as molten hydroxide electrolyte support for steam electrolysis cells, is not well documented. In this study, we have investigated the structural and chemical stability of non-oxide and oxide ceramics (SiC, YSZ, Li2ZrO3, LiAlO2, and SrZrO3) in the presence of molten hydroxide under oxidizing and reducing conditions with humidity levels of 3 and 85% at 550 °C. SiC, YSZ, Li2ZrO3 and LiAlO2 showed structural and chemical changes due to dissolution of the ceramic particles in the hydroxide melt followed by precipitation. The SrZrO3 powder, on the other hand, remained both chemically and structurally stable during 500 h test under both oxidizing and reducing atmospheres. The findings of a stable ceramic matrix in molten hydroxide contribute to the enhancement of the durability and performance of intermediate temperature water electrolysis system.",

keywords = "ceramic matrix stability, high-temperature water electrolysis, molten hydroxide, phase change",

author = "M. Anisur and Ashish Aphale and Michael Reisert and Pawan Dubey and Heo, {Su Jeong} and Junsung Hong and Kailash Patil and Hui Xu and Chao-Yi Yuh and Prabhakar Singh",

year = "2021",

doi = "10.1016/j.ijhydene.2020.08.182",

language = "American English",

volume = "46",

pages = "14898--14912",

journal = "International Journal of Hydrogen Energy",

issn = "0360-3199",

publisher = "Elsevier Ltd.",

number = "28",

}

TY - JOUR

T1 - Stability of Ceramic Matrix Materials in Molten Hydroxide Under Oxidizing and Reducing Conditions

AU - Anisur, M.

AU - Aphale, Ashish

AU - Reisert, Michael

AU - Dubey, Pawan

AU - Heo, Su Jeong

AU - Hong, Junsung

AU - Patil, Kailash

AU - Xu, Hui

AU - Yuh, Chao-Yi

AU - Singh, Prabhakar

PY - 2021

Y1 - 2021

N2 - The degradation mechanism of ceramic matrix materials used as molten hydroxide electrolyte support for steam electrolysis cells, is not well documented. In this study, we have investigated the structural and chemical stability of non-oxide and oxide ceramics (SiC, YSZ, Li2ZrO3, LiAlO2, and SrZrO3) in the presence of molten hydroxide under oxidizing and reducing conditions with humidity levels of 3 and 85% at 550 °C. SiC, YSZ, Li2ZrO3 and LiAlO2 showed structural and chemical changes due to dissolution of the ceramic particles in the hydroxide melt followed by precipitation. The SrZrO3 powder, on the other hand, remained both chemically and structurally stable during 500 h test under both oxidizing and reducing atmospheres. The findings of a stable ceramic matrix in molten hydroxide contribute to the enhancement of the durability and performance of intermediate temperature water electrolysis system.

AB - The degradation mechanism of ceramic matrix materials used as molten hydroxide electrolyte support for steam electrolysis cells, is not well documented. In this study, we have investigated the structural and chemical stability of non-oxide and oxide ceramics (SiC, YSZ, Li2ZrO3, LiAlO2, and SrZrO3) in the presence of molten hydroxide under oxidizing and reducing conditions with humidity levels of 3 and 85% at 550 °C. SiC, YSZ, Li2ZrO3 and LiAlO2 showed structural and chemical changes due to dissolution of the ceramic particles in the hydroxide melt followed by precipitation. The SrZrO3 powder, on the other hand, remained both chemically and structurally stable during 500 h test under both oxidizing and reducing atmospheres. The findings of a stable ceramic matrix in molten hydroxide contribute to the enhancement of the durability and performance of intermediate temperature water electrolysis system.

KW - ceramic matrix stability

KW - high-temperature water electrolysis

KW - molten hydroxide

KW - phase change

U2 - 10.1016/j.ijhydene.2020.08.182

DO - 10.1016/j.ijhydene.2020.08.182

M3 - Article

SN - 0360-3199

VL - 46

SP - 14898

EP - 14912

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

IS - 28

ER -

Stability of Ceramic Matrix Materials in Molten Hydroxide Under Oxidizing and Reducing Conditions

Abstract

NREL Publication Number

Keywords

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