A Stability Study of Alkali Doped PBI Membranes for Alkaline Electrolyzer Cells

Jens Oluf Jensen; David Aili; Martin Kalmar Hansen; Qingfeng Li; Niels Janniksen Bjerrum; Erik Christensen

doi:10.1149/06403.1175ecst

A Stability Study of Alkali Doped PBI Membranes for Alkaline Electrolyzer Cells

Jens Oluf Jensen (Invited author), David Aili (Invited author), Martin Kalmar Hansen (Invited author), Qingfeng Li (Invited author), Niels Janniksen Bjerrum (Invited author), Erik Christensen (Invited author)

Department of Energy Conversion and Storage

Siemens A/S

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Abstract

Polybenzimidazole membranes in a linear, a crosslinked and a thermally cured form were subjected to aging in 6 M aqueous KOH at 85 ºC for periods of up to 176 days. The aged membranes were characterized with respect to weight loss, mechanical properties and ionic conductivity. The area specific conductivity was similar to a commercial Zirfon membrane and suitable for a water electrolyzer. Some chemical degradation was seen during the aging period, but the crosslinked and the cured materials were both integral after 176 days of aging. A simplified electrolyzer test cell was operated successfully.

Original language	English
Journal	ECS Transactions
Volume	64
Issue number	3
Pages (from-to)	1175-1184
Number of pages	10
ISSN	1938-5862
DOIs	https://doi.org/10.1149/06403.1175ecst
Publication status	Published - 2014
Event	226th Meeting of the Electrochemical Society (ECS) and 7th Meeting of the Mexico Section of the Electrochemical Society ECS and SMEQ Joint International Meeting : Joint international meeting - Cancun, Mexico Duration: 5 Oct 2014 → 9 Oct 2014 Conference number: 226

Conference

Conference	226th Meeting of the Electrochemical Society (ECS) and 7th Meeting of the Mexico Section of the Electrochemical Society ECS and SMEQ Joint International Meeting
Number	226
Country/Territory	Mexico
City	Cancun
Period	05/10/2014 → 09/10/2014

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©The Electrochemical Society

Keywords

Alkaline FCs
Ion Transport

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title = "A Stability Study of Alkali Doped PBI Membranes for Alkaline Electrolyzer Cells",

abstract = "Polybenzimidazole membranes in a linear, a crosslinked and a thermally cured form were subjected to aging in 6 M aqueous KOH at 85 ºC for periods of up to 176 days. The aged membranes were characterized with respect to weight loss, mechanical properties and ionic conductivity. The area specific conductivity was similar to a commercial Zirfon membrane and suitable for a water electrolyzer. Some chemical degradation was seen during the aging period, but the crosslinked and the cured materials were both integral after 176 days of aging. A simplified electrolyzer test cell was operated successfully.",

keywords = "Alkaline FCs, Ion Transport",

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AU - Jensen, Jens Oluf

AU - Aili, David

AU - Hansen, Martin Kalmar

AU - Li, Qingfeng

AU - Bjerrum, Niels Janniksen

AU - Christensen, Erik

N1 - Conference code: 226

PY - 2014

Y1 - 2014

N2 - Polybenzimidazole membranes in a linear, a crosslinked and a thermally cured form were subjected to aging in 6 M aqueous KOH at 85 ºC for periods of up to 176 days. The aged membranes were characterized with respect to weight loss, mechanical properties and ionic conductivity. The area specific conductivity was similar to a commercial Zirfon membrane and suitable for a water electrolyzer. Some chemical degradation was seen during the aging period, but the crosslinked and the cured materials were both integral after 176 days of aging. A simplified electrolyzer test cell was operated successfully.

AB - Polybenzimidazole membranes in a linear, a crosslinked and a thermally cured form were subjected to aging in 6 M aqueous KOH at 85 ºC for periods of up to 176 days. The aged membranes were characterized with respect to weight loss, mechanical properties and ionic conductivity. The area specific conductivity was similar to a commercial Zirfon membrane and suitable for a water electrolyzer. Some chemical degradation was seen during the aging period, but the crosslinked and the cured materials were both integral after 176 days of aging. A simplified electrolyzer test cell was operated successfully.

KW - Alkaline FCs

KW - Ion Transport

U2 - 10.1149/06403.1175ecst

DO - 10.1149/06403.1175ecst

M3 - Conference article

SN - 1938-5862

VL - 64

SP - 1175

EP - 1184

JO - ECS Transactions

JF - ECS Transactions

IS - 3

T2 - 226th Meeting of the Electrochemical Society (ECS) and 7th Meeting of the Mexico Section of the Electrochemical Society ECS and SMEQ Joint International Meeting

Y2 - 5 October 2014 through 9 October 2014

ER -

A Stability Study of Alkali Doped PBI Membranes for Alkaline Electrolyzer Cells

Abstract

Conference

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Keywords

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