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Henkensmeier D, Cho WC, Jannasch P, Stojadinovic J, Li Q, Aili D, Jensen JO. Separators and Membranes for Advanced Alkaline Water Electrolysis. Chem Rev 2024; 124:6393-6443. [PMID: 38669641 PMCID: PMC11117188 DOI: 10.1021/acs.chemrev.3c00694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 01/23/2024] [Accepted: 04/01/2024] [Indexed: 04/28/2024]
Abstract
Traditionally, alkaline water electrolysis (AWE) uses diaphragms to separate anode and cathode and is operated with 5-7 M KOH feed solutions. The ban of asbestos diaphragms led to the development of polymeric diaphragms, which are now the state of the art material. A promising alternative is the ion solvating membrane. Recent developments show that high conductivities can also be obtained in 1 M KOH. A third technology is based on anion exchange membranes (AEM); because these systems use 0-1 M KOH feed solutions to balance the trade-off between conductivity and the AEM's lifetime in alkaline environment, it makes sense to treat them separately as AEM WE. However, the lifetime of AEM increased strongly over the last 10 years, and some electrode-related issues like oxidation of the ionomer binder at the anode can be mitigated by using KOH feed solutions. Therefore, AWE and AEM WE may get more similar in the future, and this review focuses on the developments in polymeric diaphragms, ion solvating membranes, and AEM.
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Affiliation(s)
- Dirk Henkensmeier
- Hydrogen
· Fuel Cell Research Center, Korea
Institute of Science and Technology, Seoul 02792, Republic of Korea
- Division
of Energy & Environment Technology, KIST School, University of Science and Technology, Seoul 02792, Republic of Korea
- KU-KIST
Green School, Korea University, Seoul 02841, Republic of Korea
| | - Won-Chul Cho
- Department
of Future Energy Convergence, Seoul National
University of Science & Technology, 232 Gongreung-ro, Nowon-gu, Seoul 01811, Korea
| | - Patric Jannasch
- Polymer
& Materials Chemistry, Department of Chemistry, Lund University, 221 00 Lund, Sweden
| | | | - Qingfeng Li
- Department
of Energy Conversion and Storage, Technical
University of Denmark (DTU), Fysikvej 310, 2800 Kgs. Lyngby, Denmark
| | - David Aili
- Department
of Energy Conversion and Storage, Technical
University of Denmark (DTU), Fysikvej 310, 2800 Kgs. Lyngby, Denmark
| | - Jens Oluf Jensen
- Department
of Energy Conversion and Storage, Technical
University of Denmark (DTU), Fysikvej 310, 2800 Kgs. Lyngby, Denmark
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Aili D, Kraglund MR, Rajappan SC, Serhiichuk D, Xia Y, Deimede V, Kallitsis J, Bae C, Jannasch P, Henkensmeier D, Jensen JO. Electrode Separators for the Next-Generation Alkaline Water Electrolyzers. ACS ENERGY LETTERS 2023; 8:1900-1910. [PMID: 37090167 PMCID: PMC10111418 DOI: 10.1021/acsenergylett.3c00185] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Accepted: 03/07/2023] [Indexed: 05/03/2023]
Abstract
Multi-gigawatt-scale hydrogen production by water electrolysis is central in the green transition when it comes to storage of energy and forming the basis for sustainable fuels and materials. Alkaline water electrolysis plays a key role in this context, as the scale of implementation is not limited by the availability of scarce and expensive raw materials. Even though it is a mature technology, the new technological context of the renewable energy system demands more from the systems in terms of higher energy efficiency, enhanced rate capability, as well as dynamic, part-load, and differential pressure operation capability. New electrode separators that can support high currents at small ohmic losses, while effectively suppressing gas crossover, are essential to achieving this. This Focus Review compares the three main development paths that are currently being pursued in the field with the aim to identify the advantages and drawbacks of the different approaches in order to illuminate rational ways forward.
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Affiliation(s)
- David Aili
- Department
of Energy Conversion and Storage, Technical
University of Denmark, Elektrovej, Building 375, 2800 Lyngby, Denmark
| | - Mikkel Rykær Kraglund
- Department
of Energy Conversion and Storage, Technical
University of Denmark, Elektrovej, Building 375, 2800 Lyngby, Denmark
| | - Sinu C. Rajappan
- Department
of Energy Conversion and Storage, Technical
University of Denmark, Elektrovej, Building 375, 2800 Lyngby, Denmark
| | - Dmytro Serhiichuk
- Department
of Energy Conversion and Storage, Technical
University of Denmark, Elektrovej, Building 375, 2800 Lyngby, Denmark
| | - Yifan Xia
- Department
of Energy Conversion and Storage, Technical
University of Denmark, Elektrovej, Building 375, 2800 Lyngby, Denmark
| | - Valadoula Deimede
- Department
of Chemistry, University of Patras, 26504, Patras, Greece
| | - Joannis Kallitsis
- Department
of Chemistry, University of Patras, 26504, Patras, Greece
| | - Chulsung Bae
- Department
of Chemistry and Chemical Biology, Rensselaer
Polytechnic Institute, Troy, New York 12180, United States
| | - Patric Jannasch
- Polymer
& Materials Chemistry, Department of Chemistry, Lund University, 221 00 Lund, Sweden
| | - Dirk Henkensmeier
- Hydrogen·Fuel
Cell Research Center, Korea Institute of
Science andTechnology, Seoul 02792, Republic
of Korea
- Division
of Energy & Environment Technology, KIST School, University of Science and Technology, Seoul 02792, Republic of Korea
- Green School, Korea University, Seoul 02841, Republic
of Korea
| | - Jens Oluf Jensen
- Department
of Energy Conversion and Storage, Technical
University of Denmark, Elektrovej, Building 375, 2800 Lyngby, Denmark
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Shao L, Huang J, Feng X, Sun Z, Qiu Y, Tian W, Zhu C. Study on Preparation and Properties of Glass Fibre Fabric Reinforced Polyphenylene Sulphide Composites. MATERIALS (BASEL, SWITZERLAND) 2022; 15:9036. [PMID: 36556841 PMCID: PMC9784650 DOI: 10.3390/ma15249036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 12/01/2022] [Accepted: 12/14/2022] [Indexed: 06/17/2023]
Abstract
In this paper, glass fiber fabric reinforced polyphenylene sulfide composites were prepared by hot pressing. The effects of glass fibre modification and hot pressing temperature on the properties of the composites were investigated using a scanning electron microscope, infrared spectrometer, universal testing machine, and DIGEYE digital imaging colour measurement system. The results show that after the treatment with a silane coupling agent, the silane coupling agent was more uniformly distributed on the surface of the glass fibres, and the bonding effect between the glass fibre fabric and polyphenylene sulphide was significantly improved. The strength of the composites increased and then decreased with the increase of hot pressing temperature, and the surface colour of the composites became darker and darker. When the hot-pressing temperature is 310 °C, the mechanical properties of glass fabric-reinforced polyphenylene sulfide composites are at their best, the tensile strength reaches 51.9 MPa, and the bending strength reaches 78 MPa.
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Affiliation(s)
- Lingda Shao
- College of Textile Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
- Zhejiang Sci-Tech University Huzhou Research Institute Co., Ltd., Huzhou 313000, China
| | - Jinbo Huang
- College of Textile Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Xuhuang Feng
- College of Textile Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
- Zhejiang Sci-Tech University Huzhou Research Institute Co., Ltd., Huzhou 313000, China
| | - Zeyu Sun
- College of Textile Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
- Zhejiang Sci-Tech University Huzhou Research Institute Co., Ltd., Huzhou 313000, China
| | - Yingjie Qiu
- College of Textile Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Wei Tian
- College of Textile Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
- Zhejiang Sci-Tech University Huzhou Research Institute Co., Ltd., Huzhou 313000, China
| | - Chengyan Zhu
- College of Textile Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
- Zhejiang Sci-Tech University Huzhou Research Institute Co., Ltd., Huzhou 313000, China
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