Water electrolysis and desalination using an AEM/CEM hybrid electrochemical system

Lee, Jae Woo; Kim, Byeongkyu; Seo, Jung Yong; Kim, Yong Seok; Yoo, Pil J.; Chung, Chong-Pyoung

doi:10.1016/j.apsusc.2022.155524

Cited by 12 publications

(4 citation statements)

References 23 publications

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“…These membranes offer flexibility in terms of their application, allowing researchers to explore various experimental setups and conditions to achieve efficient CO 2 reduction [64][65][66]. Moreover, their versatility extends beyond CO 2 reduction to encompass other electrochemical processes such as electrodialysis, desalination, reverse electrodialysis, and acid recovery [67][68][69][70]. The FAA series has been readily accessible in the market for a substantial period, offering researchers and industry professionals a dependable and commercially viable solution for these specific applications.…”

Section: Fumatech: Faa Seriesmentioning

confidence: 99%

Commercial Anion Exchange Membranes (AEMs) for Fuel Cell and Water Electrolyzer Applications: Performance, Durability, and Materials Advancement

Wong

Rosli

et al. 2023

Separations

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The utilization of anion exchange membranes (AEMs) has revolutionized the field of electrochemical applications, particularly in water electrolysis and fuel cells. This review paper provides a comprehensive analysis of recent studies conducted on various commercial AEMs, including FAA3-50, Sustainion, Aemion™, XION Composite, and PiperION™ membranes, with a focus on their performance and durability in AEM water electrolysis (AEMWE) and AEM fuel cells (AEMFCs). The discussed studies highlight the exceptional potential of these membranes in achieving high current densities, stable operation, and extended durability. Furthermore, the integration of innovative catalysts, such as nitrogen-doped graphene and Raney nickel, has demonstrated significant improvements in performance. Additionally, the exploration of PGM-free catalysts, such as Ag/C, for AEMFC cathodes has unveiled promising prospects for cost-effective and sustainable fuel cell systems. Future research directions are identified, encompassing the optimization of membrane properties, investigation of alternative catalyst materials, and assessment of performance under diverse operating conditions. The findings underscore the versatility and suitability of these commercial AEMs in water electrolysis and fuel cell applications, paving the way for the advancement of efficient and environmentally benign energy technologies. This review paper serves as a valuable resource for researchers, engineers, and industry professionals seeking to enhance the performance and durability of AEMs in various electrochemical applications.

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Section: Fumatech: Faa Seriesmentioning

confidence: 99%

Commercial Anion Exchange Membranes (AEMs) for Fuel Cell and Water Electrolyzer Applications: Performance, Durability, and Materials Advancement

Wong

Rosli

et al. 2023

Separations

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“…Furthermore, alkaline and acidic conditions were employed at sites with positive and negative potentials, respectively. The pH-dependent hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), which determine the potential window of the aqueous electrolyte, allow the theoretical potential window of the system to exceed 2 V. [20][21][22][23] Consequently, the desalination process can be implemented at high voltages, unrelated to the water-splitting reactions. This elevated voltage, as indicated by the Nernst-Plank equation, serves as a driving force for ion flux due to migration, leading to an anticipated rapid desalination rate.…”

Section: Introductionmentioning

confidence: 99%

Redox‐Flow Desalination with a Voltage Range Extending up to 2 V Under Dual‐pH Conditions

Kim,

Mule,

Kim

et al. 2024

ChemElectroChem

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The battery‐like systems utilizing redox materials present a promising avenue for electrochemical desalination with reduced energy consumption. However, several attempts have focused on reducing the operational voltage to minimize energy consumption, and efforts to enhance the performance of such systems as energy storage devices remain limited. Herein, a system with a high energy density capable of sustaining freshwater production was proposed. Furthermore, in this proposed system, the electrolytes with different pH values were utilized to implement an operational voltage of 2 V or higher. Accordingly, an alkaline Zn electrolyte was paired with acidic MnO2 or VOSO4 electrolyte. During the process, potential side reactions such as chlorine evolution and proton crossover were not observed, even without water‐splitting reactions. Ultimately, at operational voltages exceeding 2 V, the system achieved a desalination rate of 0.104 mg/cm2/min and demonstrated maximum energy discharge of up to 2.4 Wh/L. These designed systems pave the way towards a more environmentally friendly and efficient approach to desalination.

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“…[25][26][27] In general, electrochemical catalysts such as Pt/C for the hydrogen evolution reaction (HER) and IrO 2 for the oxygen evolution reaction (OER) are used as electrodes to electrochemically split water molecules into H 2 and O 2 , respectively. 28 Currently, many researchers have focused on the development of electrode materials using transition-metal based electrodes in order to examine catalysts containing non-noble elements, this allows them to lower the cost of green-hydrogen production. [29][30][31][32][33][34] Additionally, to effectively produce green-hydrogen, adopting renewable energy as a power source is feasible because the conversion efficiency from electric energy to green-hydrogen is 55-80%.…”

Section: Introductionmentioning

confidence: 99%

Strategic usage of redox active materials and sacrificial Zn electrodes for spontaneous hydrogen evolution reaction

Jeong,

Gudal,

Kim

et al. 2024

J. Mater. Chem. A

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Water electrolysis and desalination using an AEM/CEM hybrid electrochemical system

Cited by 12 publications

References 23 publications

Commercial Anion Exchange Membranes (AEMs) for Fuel Cell and Water Electrolyzer Applications: Performance, Durability, and Materials Advancement

Commercial Anion Exchange Membranes (AEMs) for Fuel Cell and Water Electrolyzer Applications: Performance, Durability, and Materials Advancement

Redox‐Flow Desalination with a Voltage Range Extending up to 2 V Under Dual‐pH Conditions

Strategic usage of redox active materials and sacrificial Zn electrodes for spontaneous hydrogen evolution reaction

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