Corrosion of AISI 310 and 316 in Molten Hydroxide Under Steam Electrolysis Conditions

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

doi:10.1149/09801.0025ecst

Corrosion of AISI 310 and 316 in Molten Hydroxide Under Steam Electrolysis Conditions

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

Materials Science

Research output: Contribution to journal › Article

2 Scopus Citations

Abstract

Steam electrolyzers, utilizing molten hydroxide electrolyte, offers potential for improvement in electrochemical efficiency, cost reduction, use of conventional materials of construction and process scale up for large scale hydrogen production. Stainless steels, used for the fabrication of cell components (current collector, gas separator, wet seals, and manifolds) experience accelerated corrosion in the presence of molten hydroxide electrolyte in both oxidizing (anodic) and reducing (cathodic) atmospheres. In this study, the corrosion behavior of AISI 310 and 316 in hydroxide melt has been studied at 600°C for 50 h. Melt immersion tests revealed formation of the porous lithium iron oxide at the melt-oxide interface for both AISI 310 and 316. Inductively coupled plasma optical emission spectrometry (ICP-OES) analysis showed the presence of Cr in the electrolyte melt obtained from samples exposed to oxidizing atmosphere. Thermochemical analysis was performed to validate the experimental results.

Original language	American English
Pages (from-to)	25-34
Number of pages	10
Journal	ECS Transactions
Volume	98
Issue number	1
DOIs	https://doi.org/10.1149/09801.0025ecst
State	Published - 2020

NREL Publication Number

NREL/JA-5K00-78272

Keywords

corrosion
electrolysis
hydrogen

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10.1149/09801.0025ecst

Cite this

@article{9569976327024dbb8956086cf3c5720c,

title = "Corrosion of AISI 310 and 316 in Molten Hydroxide Under Steam Electrolysis Conditions",

abstract = "Steam electrolyzers, utilizing molten hydroxide electrolyte, offers potential for improvement in electrochemical efficiency, cost reduction, use of conventional materials of construction and process scale up for large scale hydrogen production. Stainless steels, used for the fabrication of cell components (current collector, gas separator, wet seals, and manifolds) experience accelerated corrosion in the presence of molten hydroxide electrolyte in both oxidizing (anodic) and reducing (cathodic) atmospheres. In this study, the corrosion behavior of AISI 310 and 316 in hydroxide melt has been studied at 600°C for 50 h. Melt immersion tests revealed formation of the porous lithium iron oxide at the melt-oxide interface for both AISI 310 and 316. Inductively coupled plasma optical emission spectrometry (ICP-OES) analysis showed the presence of Cr in the electrolyte melt obtained from samples exposed to oxidizing atmosphere. Thermochemical analysis was performed to validate the experimental results.",

keywords = "corrosion, electrolysis, hydrogen",

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

year = "2020",

doi = "10.1149/09801.0025ecst",

language = "American English",

volume = "98",

pages = "25--34",

journal = "ECS Transactions",

issn = "1938-5862",

publisher = "Electrochemical Society, Inc.",

number = "1",

}

TY - JOUR

T1 - Corrosion of AISI 310 and 316 in Molten Hydroxide Under Steam Electrolysis Conditions

AU - Anisur, M.

AU - Aphale, Ashish

AU - Dubey, Pawan

AU - Hong, Junsung

AU - Reisert, Michael

AU - Singh Raman, R.

AU - Heo, Su Jeong

AU - Patil, Kailash

AU - Xu, Hui

AU - Yuh, Chao-Yi

AU - Singh, Prabhakar

PY - 2020

Y1 - 2020

N2 - Steam electrolyzers, utilizing molten hydroxide electrolyte, offers potential for improvement in electrochemical efficiency, cost reduction, use of conventional materials of construction and process scale up for large scale hydrogen production. Stainless steels, used for the fabrication of cell components (current collector, gas separator, wet seals, and manifolds) experience accelerated corrosion in the presence of molten hydroxide electrolyte in both oxidizing (anodic) and reducing (cathodic) atmospheres. In this study, the corrosion behavior of AISI 310 and 316 in hydroxide melt has been studied at 600°C for 50 h. Melt immersion tests revealed formation of the porous lithium iron oxide at the melt-oxide interface for both AISI 310 and 316. Inductively coupled plasma optical emission spectrometry (ICP-OES) analysis showed the presence of Cr in the electrolyte melt obtained from samples exposed to oxidizing atmosphere. Thermochemical analysis was performed to validate the experimental results.

AB - Steam electrolyzers, utilizing molten hydroxide electrolyte, offers potential for improvement in electrochemical efficiency, cost reduction, use of conventional materials of construction and process scale up for large scale hydrogen production. Stainless steels, used for the fabrication of cell components (current collector, gas separator, wet seals, and manifolds) experience accelerated corrosion in the presence of molten hydroxide electrolyte in both oxidizing (anodic) and reducing (cathodic) atmospheres. In this study, the corrosion behavior of AISI 310 and 316 in hydroxide melt has been studied at 600°C for 50 h. Melt immersion tests revealed formation of the porous lithium iron oxide at the melt-oxide interface for both AISI 310 and 316. Inductively coupled plasma optical emission spectrometry (ICP-OES) analysis showed the presence of Cr in the electrolyte melt obtained from samples exposed to oxidizing atmosphere. Thermochemical analysis was performed to validate the experimental results.

KW - corrosion

KW - electrolysis

KW - hydrogen

U2 - 10.1149/09801.0025ecst

DO - 10.1149/09801.0025ecst

M3 - Article

SN - 1938-5862

VL - 98

SP - 25

EP - 34

JO - ECS Transactions

JF - ECS Transactions

IS - 1

ER -

Corrosion of AISI 310 and 316 in Molten Hydroxide Under Steam Electrolysis Conditions

Abstract

NREL Publication Number

Keywords

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