Electrode Optimization for Efficient Hydrogen Production Using an SO2-Depolarized Electrolysis Cell

Hector Colon-Mercado; Scott Mauger; Maximilian Gorensek; Cy Fujimoto; Aaron Lando; Prabhu Ganesan; Benjamin Meekins; Noah Meeks

doi:10.1016/j.ijhydene.2022.02.166

Electrode Optimization for Efficient Hydrogen Production Using an SO2-Depolarized Electrolysis Cell

Hector Colon-Mercado, Scott Mauger, Maximilian Gorensek, Cy Fujimoto, Aaron Lando, Prabhu Ganesan, Benjamin Meekins, Noah Meeks

Chemistry and Nanoscience

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

5 Scopus Citations

Abstract

The hybrid sulfur (HyS) cycle offers an alternative route to hydrogen and sulfuric acid production using the SO₂-depolarized electrolysis (SDE) cell. This work reports the most efficient SDE operation to date at high sulfuric acid concentrations (∼60 wt%) achieved through the optimization of operating conditions and cell components. We observed that open porosity in the porous transport media (PTM) plays a significant role in SDE performance as it enables efficient acid removal from the catalyst layer. The combination of membrane electrode assembly (MEA) components, such as Sulfonated Diels Alder Poly (phenylene) (SDAPP) membranes and electrodes prepared using SGL 29BC PTM, and operating conditions (103.4 kPa_gauge at 125 °C) yielded electrolysis potentials <700 mV at 500 mA/cm² and acid concentrations >60 wt%.

Original language	American English
Pages (from-to)	14180-14185
Number of pages	6
Journal	International Journal of Hydrogen Energy
Volume	47
Issue number	31
DOIs	https://doi.org/10.1016/j.ijhydene.2022.02.166 https://doi.org/10.1016/j.ijhydene.2022.02.166
State	Published - 12 Apr 2022

Bibliographical note

Publisher Copyright:
© Hydrogen Energy Publications LLC

NREL Publication Number

NREL/JA-5900-81625

Keywords

Catalysis
Electrolysis
High pressure
Hybrid sulfur cycle
Hydrogen generation
Sulfur dioxide

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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Colon-Mercado, H., Mauger, S., Gorensek, M., Fujimoto, C., Lando, A., Ganesan, P., Meekins, B., & Meeks, N. (2022). Electrode Optimization for Efficient Hydrogen Production Using an SO2-Depolarized Electrolysis Cell. International Journal of Hydrogen Energy, 47(31), 14180-14185. https://doi.org/10.1016/j.ijhydene.2022.02.166, https://doi.org/10.1016/j.ijhydene.2022.02.166

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title = "Electrode Optimization for Efficient Hydrogen Production Using an SO2-Depolarized Electrolysis Cell",

abstract = "The hybrid sulfur (HyS) cycle offers an alternative route to hydrogen and sulfuric acid production using the SO2-depolarized electrolysis (SDE) cell. This work reports the most efficient SDE operation to date at high sulfuric acid concentrations (∼60 wt%) achieved through the optimization of operating conditions and cell components. We observed that open porosity in the porous transport media (PTM) plays a significant role in SDE performance as it enables efficient acid removal from the catalyst layer. The combination of membrane electrode assembly (MEA) components, such as Sulfonated Diels Alder Poly (phenylene) (SDAPP) membranes and electrodes prepared using SGL 29BC PTM, and operating conditions (103.4 kPagauge at 125 °C) yielded electrolysis potentials <700 mV at 500 mA/cm2 and acid concentrations >60 wt%.",

keywords = "Catalysis, Electrolysis, High pressure, Hybrid sulfur cycle, Hydrogen generation, Sulfur dioxide",

author = "Hector Colon-Mercado and Scott Mauger and Maximilian Gorensek and Cy Fujimoto and Aaron Lando and Prabhu Ganesan and Benjamin Meekins and Noah Meeks",

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Colon-Mercado, H, Mauger, S, Gorensek, M, Fujimoto, C, Lando, A, Ganesan, P, Meekins, B & Meeks, N 2022, 'Electrode Optimization for Efficient Hydrogen Production Using an SO2-Depolarized Electrolysis Cell', International Journal of Hydrogen Energy, vol. 47, no. 31, pp. 14180-14185. https://doi.org/10.1016/j.ijhydene.2022.02.166, https://doi.org/10.1016/j.ijhydene.2022.02.166

TY - JOUR

T1 - Electrode Optimization for Efficient Hydrogen Production Using an SO2-Depolarized Electrolysis Cell

AU - Colon-Mercado, Hector

AU - Mauger, Scott

AU - Gorensek, Maximilian

AU - Fujimoto, Cy

AU - Lando, Aaron

AU - Ganesan, Prabhu

AU - Meekins, Benjamin

AU - Meeks, Noah

PY - 2022/4/12

Y1 - 2022/4/12

N2 - The hybrid sulfur (HyS) cycle offers an alternative route to hydrogen and sulfuric acid production using the SO2-depolarized electrolysis (SDE) cell. This work reports the most efficient SDE operation to date at high sulfuric acid concentrations (∼60 wt%) achieved through the optimization of operating conditions and cell components. We observed that open porosity in the porous transport media (PTM) plays a significant role in SDE performance as it enables efficient acid removal from the catalyst layer. The combination of membrane electrode assembly (MEA) components, such as Sulfonated Diels Alder Poly (phenylene) (SDAPP) membranes and electrodes prepared using SGL 29BC PTM, and operating conditions (103.4 kPagauge at 125 °C) yielded electrolysis potentials <700 mV at 500 mA/cm2 and acid concentrations >60 wt%.

AB - The hybrid sulfur (HyS) cycle offers an alternative route to hydrogen and sulfuric acid production using the SO2-depolarized electrolysis (SDE) cell. This work reports the most efficient SDE operation to date at high sulfuric acid concentrations (∼60 wt%) achieved through the optimization of operating conditions and cell components. We observed that open porosity in the porous transport media (PTM) plays a significant role in SDE performance as it enables efficient acid removal from the catalyst layer. The combination of membrane electrode assembly (MEA) components, such as Sulfonated Diels Alder Poly (phenylene) (SDAPP) membranes and electrodes prepared using SGL 29BC PTM, and operating conditions (103.4 kPagauge at 125 °C) yielded electrolysis potentials <700 mV at 500 mA/cm2 and acid concentrations >60 wt%.

KW - Catalysis

KW - Electrolysis

KW - High pressure

KW - Hybrid sulfur cycle

KW - Hydrogen generation

KW - Sulfur dioxide

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DO - 10.1016/j.ijhydene.2022.02.166

M3 - Article

AN - SCOPUS:85127351188

SN - 0360-3199

VL - 47

SP - 14180

EP - 14185

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

IS - 31

ER -

Electrode Optimization for Efficient Hydrogen Production Using an SO2-Depolarized Electrolysis Cell

Abstract

Bibliographical note

NREL Publication Number

Keywords

UN SDGs

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