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Li X, Mathur A, Liu A, Liu Y. Electrifying Carbon Capture by Developing Nanomaterials at the Interface of Molecular and Process Engineering. Acc Chem Res 2023; 56:2763-2775. [PMID: 37751238 DOI: 10.1021/acs.accounts.3c00321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/27/2023]
Abstract
ConspectusCarbon capture is an indispensable step toward closing the anthropogenic carbon cycle. However, the large-scale implementation of conventional thermochemical carbon capture technologies is hindered by their low energy efficiency, limited sorbent stability, and complexity in infrastructure integration. A mechanistically different alternative, commonly known as electrochemically mediated carbon capture (EMCC), has garnered increasing research traction over the past few years and relies on electrochemical stimuli instead of thermal or pressure swings for the capture and release of carbon dioxide (CO2). Compared to conventional methods, EMCC can be operated under mild conditions driven by intermittent renewable energy sources and has a flexible design to meet the multiscale demands of carbon capture, offering a potentially sustainable, energy-efficient, and cost-effective solution to CO2 concentration from dilute mixtures or the ambient environment.Nanomaterials have played a crucial role in carbon capture research. For instance, nanoporous materials can provide increased free volumes, surface areas, and active sites for carbon capture through physical or chemical adsorption from the gaseous phase. In contrast, EMCC relies on chemical absorption via acid-base interactions using solubilized CO2 in electrolytes. Therefore, most EMCC sorbents and mediators explored so far have been developed as molecules rather than nanomaterials. In recent years, our team has been focusing on electrifying the carbon capture processes at the molecular, materials, and process levels. We seek to address the most pressing issues associated with EMCC, either in fixed-bed or flow systems, that prevent their practical use. These issues include parasitic reactions with molecular oxygen, insufficient electrode capacity utilization, sorbent crossover, etc. To address these problems, there is an urgent need to develop rationally designed nanomaterials at the interface of molecular electrochemistry and device engineering. This Account provides an overview of recent progress on developing new chemistries and engineering batch/continuous processes for EMCC. We discuss the limitations of current EMCC technology and emphasize why nanomaterials are critical for electrifying carbon capture. First, we introduce the design principles for EMCC sorbents based on redox-active organic CO2 carriers and discuss metrics for their performance evaluation. Second, we showcase how molecular design can tackle problems of sorbent solubility, oxygen stability, and electrolyte compatibility in EMCC. Third, we discuss the early results of nanomaterials as solid sorbents in fixed-bed systems, nonswelling membranes for flow systems, and high-surface-area gas-liquid contactors. Finally, building on the foundation we established through our prior work, we offer perspectives on future directions for nanomaterials to help address the challenges in EMCC.
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Affiliation(s)
- Xing Li
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Anmol Mathur
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Andong Liu
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Yayuan Liu
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, Maryland 21218, United States
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2
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Xu J, Zhong G, Li M, Zhao D, Sun Y, Hu X, Sun J, Li X, Zhu W, Li M, Zhang Z, Zhang Y, Zhao L, Zheng C, Sun X. Review on electrochemical carbon dioxide capture and transformation with bipolar membranes. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.108075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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3
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Binford TB, Mapstone G, Temprano I, Forse AC. Enhancing the capacity of supercapacitive swing adsorption CO 2 capture by tuning charging protocols. NANOSCALE 2022; 14:7980-7984. [PMID: 35615907 DOI: 10.1039/d2nr00748g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Supercapacitive swing adsorption (SSA) is a recently discovered electrochemically driven CO2 capture technology that promises significant efficiency improvements over traditional methods. A limitation of this approach is the relatively low CO2 adsorption capacity, and the underlying molecular mechanisms of SSA remain poorly understood, hindering optimization. Here we present a new device architecture for simultaneous electrochemical and gas-adsorption measurements, and use it to investigate the effects of charging protocols on SSA performance. We show that altering the voltage applied to charge the SSA device can significantly improve performance. Charging the gas-exposed electrode positively rather than negatively increases CO2 adsorption capacity and causes CO2 desorption rather than adsorption with charging. We also show that switching the voltage between positive and negative values further increases CO2 capacity. Previously proposed mechanisms of the SSA effect fail to explain these phenomena, so we present a new mechanism based on movement of CO2-derived species into and out of electrode micropores. Overall, this work advances our knowledge of electrochemical CO2 adsorption by supercapacitors, potentially leading to devices with increased uptake capacity and efficiency.
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Affiliation(s)
- Trevor B Binford
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, UK.
| | - Grace Mapstone
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, UK.
| | - Israel Temprano
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, UK.
| | - Alexander C Forse
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, UK.
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4
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Rahimi M, Khurram A, Hatton TA, Gallant B. Electrochemical carbon capture processes for mitigation of CO 2 emissions. Chem Soc Rev 2022; 51:8676-8695. [DOI: 10.1039/d2cs00443g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review discusses the emerging science and research progress underlying electrochemical processes for carbon capture for mitigation of CO2 emissions, and assesses their current maturity and trajectory.
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Affiliation(s)
- Mohammad Rahimi
- Department of Civil and Environmental Engineering, University of Houston, Houston, TX 77204, USA
- Materials Science and Engineering Program, University of Houston, Houston, TX 77204, USA
| | - Aliza Khurram
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - T. Alan Hatton
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Betar Gallant
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
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5
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Gurkan B, Su X, Klemm A, Kim Y, Mallikarjun Sharada S, Rodriguez-Katakura A, Kron KJ. Perspective and challenges in electrochemical approaches for reactive CO 2 separations. iScience 2021; 24:103422. [PMID: 34877489 PMCID: PMC8633013 DOI: 10.1016/j.isci.2021.103422] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The desire toward decarbonization and renewable energy has sparked research interests in reactive CO2 separations, such as direct air capture that utilize electricity as opposed to conventional thermal and pressure swing processes, which are energy-intensive, cost-prohibitive, and fossil-fuel dependent. Although the electrochemical approaches in CO2 capture that support negative emissions technologies are promising in terms of modularity, smaller footprint, mild reaction conditions, and possibility to integrate into conversion processes, their practice depends on the wider availability of renewable electricity. This perspective discusses key advances made in electrolytes and electrodes with redox-active moieties that reversibly capture CO2 or facilitate its transport from a CO2-rich side to a CO2-lean side within the last decade. In support of the discovery of new heterogeneous electrode materials and electrolytes with redox carriers, the role of computational chemistry is also discussed.
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Affiliation(s)
- Burcu Gurkan
- Chemical and Biomedical Engineering, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Xiao Su
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Aidan Klemm
- Chemical and Biomedical Engineering, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Yonghwan Kim
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Shaama Mallikarjun Sharada
- Mork Family Department of Chemical Engineering and Materials Science, University of Southern California, Los Angeles, CA 90089, USA
- Department of Chemistry, University of Southern California, Los Angeles, CA 90089, USA
| | - Andres Rodriguez-Katakura
- Mork Family Department of Chemical Engineering and Materials Science, University of Southern California, Los Angeles, CA 90089, USA
| | - Kareesa J. Kron
- Mork Family Department of Chemical Engineering and Materials Science, University of Southern California, Los Angeles, CA 90089, USA
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6
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Sullivan I, Goryachev A, Digdaya IA, Li X, Atwater HA, Vermaas DA, Xiang C. Coupling electrochemical CO2 conversion with CO2 capture. Nat Catal 2021. [DOI: 10.1038/s41929-021-00699-7] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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7
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Abstract
Several harmful or valuable ionic species present in seawater, brackish water, and wastewater are amphoteric, weak acids or weak bases, and, thus, their properties depend on local water pH. Effective removal of these species can be challenging for conventional membrane technologies, necessitating chemical dosing of the feedwater to adjust pH. A prominent example is boron, which is considered toxic in high concentrations and often requires additional membrane passes to remove during seawater desalination. Capacitive deionization (CDI) is an emerging membraneless technique for water treatment and desalination, based on electrosorption of salt ions into charging microporous electrodes. CDI cells show strong internally generated pH variations during operation, and, thus, CDI can potentially remove pH-dependent species without chemical dosing. However, development of this technique is inhibited by the complexities inherent to the coupling of pH dynamics and ion properties in a charging CDI cell. Here, we present a theoretical framework predicting the electrosorption of pH-dependent species in flow-through electrode CDI cells. We demonstrate that such a model enables insight into factors affecting species electrosorption and conclude that important design rules for such systems are highly counterintuitive. For example, we show both theoretically and experimentally that for boron removal, the anode should be placed upstream and the cathode downstream, an electrode order that runs counter to the accepted wisdom in the CDI field. Overall, we show that to achieve target separations relying on coupled, complex phenomena, such as in the removal of amphoteric species, a theoretical CDI model is essential.
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8
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Mohamadi-Baghmolaei M, Hajizadeh A, Zendehboudi S, Duan X, Shiri H, Cata Saady NM. Exergy and Exergoeconomic Assessment of an Acid Gas Removal Unit in a Gas Refinery Plant. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c02499] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mohamad Mohamadi-Baghmolaei
- Faculty of Engineering and Applied Science, Memorial University, St. John’s, Newfoundland and Labrador A1B 3X5, Canada
| | - Abdollah Hajizadeh
- Faculty of Engineering and Applied Science, Memorial University, St. John’s, Newfoundland and Labrador A1B 3X5, Canada
| | - Sohrab Zendehboudi
- Faculty of Engineering and Applied Science, Memorial University, St. John’s, Newfoundland and Labrador A1B 3X5, Canada
| | - Xili Duan
- Faculty of Engineering and Applied Science, Memorial University, St. John’s, Newfoundland and Labrador A1B 3X5, Canada
| | - Hodjat Shiri
- Faculty of Engineering and Applied Science, Memorial University, St. John’s, Newfoundland and Labrador A1B 3X5, Canada
| | - Noori M. Cata Saady
- Faculty of Engineering and Applied Science, Memorial University, St. John’s, Newfoundland and Labrador A1B 3X5, Canada
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9
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Rodrigues M, Paradkar A, Sleutels T, Heijne AT, Buisman CJN, Hamelers HVM, Kuntke P. Donnan Dialysis for scaling mitigation during electrochemical ammonium recovery from complex wastewater. WATER RESEARCH 2021; 201:117260. [PMID: 34107362 DOI: 10.1016/j.watres.2021.117260] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Revised: 04/25/2021] [Accepted: 05/12/2021] [Indexed: 06/12/2023]
Abstract
Inorganic scaling is often an obstacle for implementing electrodialysis systems in general and for nutrient recovery from wastewater specifically. In this work, Donnan dialysis was explored, to prevent scaling and to prolong operation of an electrochemical system for TAN (total ammonia nitrogen) recovery. An electrochemical system was operated with and without an additional Donnan dialysis cell, while being supplied with synthetic influent and real digested black water. For the same Load Ratio (nitrogen load vs applied current) while treating digested black water, the system operated for a period three times longer when combined with a Donnan cell. Furthermore, the amount of nitrogen recovered was higher. System performance was evaluated in terms of both TAN recovery and energy efficiency, at different Load Ratios. At a Load Ratio 1.3 and current density of 10 A m-2, a TAN recovery of 83% was achieved while consuming 9.7 kWh kgN-1.
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Affiliation(s)
- Mariana Rodrigues
- Wetsus, European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9 8911MA Leeuwarden P.O. Box 1113, 8900 CC Leeuwarden, the Netherlands; Environmental Technology, Wageningen University, Bornse Weilanden 9 6708 WG Wageningen P.O. Box 17, 6700 AA Wageningen, the Netherlands
| | - Aishwarya Paradkar
- Wetsus, European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9 8911MA Leeuwarden P.O. Box 1113, 8900 CC Leeuwarden, the Netherlands
| | - Tom Sleutels
- Wetsus, European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9 8911MA Leeuwarden P.O. Box 1113, 8900 CC Leeuwarden, the Netherlands
| | - Annemiek Ter Heijne
- Environmental Technology, Wageningen University, Bornse Weilanden 9 6708 WG Wageningen P.O. Box 17, 6700 AA Wageningen, the Netherlands
| | - Cees J N Buisman
- Wetsus, European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9 8911MA Leeuwarden P.O. Box 1113, 8900 CC Leeuwarden, the Netherlands; Environmental Technology, Wageningen University, Bornse Weilanden 9 6708 WG Wageningen P.O. Box 17, 6700 AA Wageningen, the Netherlands
| | - Hubertus V M Hamelers
- Wetsus, European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9 8911MA Leeuwarden P.O. Box 1113, 8900 CC Leeuwarden, the Netherlands; Environmental Technology, Wageningen University, Bornse Weilanden 9 6708 WG Wageningen P.O. Box 17, 6700 AA Wageningen, the Netherlands
| | - Philipp Kuntke
- Wetsus, European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9 8911MA Leeuwarden P.O. Box 1113, 8900 CC Leeuwarden, the Netherlands; Environmental Technology, Wageningen University, Bornse Weilanden 9 6708 WG Wageningen P.O. Box 17, 6700 AA Wageningen, the Netherlands.
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10
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Zhang C, Ma J, Wu L, Sun J, Wang L, Li T, Waite TD. Flow Electrode Capacitive Deionization (FCDI): Recent Developments, Environmental Applications, and Future Perspectives. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:4243-4267. [PMID: 33724803 DOI: 10.1021/acs.est.0c06552] [Citation(s) in RCA: 55] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
With the increasing severity of global water scarcity, a myriad of scientific activities is directed toward advancing brackish water desalination and wastewater remediation technologies. Flow-electrode capacitive deionization (FCDI), a newly developed electrochemically driven ion removal approach combining ion-exchange membranes and flowable particle electrodes, has been actively explored over the past seven years, driven by the possibility of energy-efficient, sustainable, and fully continuous production of high-quality fresh water, as well as flexible management of the particle electrodes and concentrate stream. Here, we provide a comprehensive overview of current advances of this interesting technology with particular attention given to FCDI principles, designs (including cell architecture and electrode and separator options), operational modes (including approaches to management of the flowable electrodes), characterizations and modeling, and environmental applications (including water desalination, resource recovery, and contaminant abatement). Furthermore, we introduce the definitions and performance metrics that should be used so that fair assessments and comparisons can be made between different systems and separation conditions. We then highlight the most pressing challenges (i.e., operation and capital cost, scale-up, and commercialization) in the full-scale application of this technology. We conclude this state-of-the-art review by considering the overall outlook of the technology and discussing areas requiring particular attention in the future.
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Affiliation(s)
- Changyong Zhang
- UNSW Water Research Centre, School of Civil and Environmental Engineering, University of New South Wales, Sydney, NSW 2052, Australia
| | - Jinxing Ma
- UNSW Water Research Centre, School of Civil and Environmental Engineering, University of New South Wales, Sydney, NSW 2052, Australia
| | - Lei Wu
- UNSW Water Research Centre, School of Civil and Environmental Engineering, University of New South Wales, Sydney, NSW 2052, Australia
| | - Jingyi Sun
- UNSW Water Research Centre, School of Civil and Environmental Engineering, University of New South Wales, Sydney, NSW 2052, Australia
| | - Li Wang
- Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520, United States
| | - Tianyu Li
- Beijing Origin Water Membrane Technology Company Limited, Huairou, Beijing 101400, P. R. China
| | - T David Waite
- UNSW Water Research Centre, School of Civil and Environmental Engineering, University of New South Wales, Sydney, NSW 2052, Australia
- Shanghai Institute of Pollution Control and Ecological Safety, Tongji University, Shanghai 200092, P. R. China
- UNSW Centre for Transformational Environmental Technologies, Yixing, Jiangsu Province 214206, P. R. China
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11
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Angeles AT, Lee J. Carbon-Based Capacitive Deionization Electrodes: Development Techniques and its Influence on Electrode Properties. CHEM REC 2021; 21:820-840. [PMID: 33645913 DOI: 10.1002/tcr.202000182] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 01/26/2021] [Indexed: 12/22/2022]
Abstract
Capacitive deionization (CDI) is a potential technology to provide cost efficient desalinated and/or softened water. Several efforts have been invested in the fabrication of CDI electrodes that not only has outstanding performance but also high chance of large scalability. In this personal account, the different techniques in developing carbon-based materials are presented together with its actual effect on the surface and electrochemical properties of carbon. The categories presented are based on the studies done by the Electrochemical Reaction and Technology Laboratory, the Ertl Center, different research groups in South Korea, and selected papers from the past three years. Our perspective about research gaps and prospects are also included with the aim to increase interest for CDI research.
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Affiliation(s)
- Anne Therese Angeles
- Electrochemical Reaction and Technology Laboratory (ERTL), School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju, 61005, South Korea
| | - Jaeyoung Lee
- Electrochemical Reaction and Technology Laboratory (ERTL), School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju, 61005, South Korea
- Ertl Center for Electrochemistry and Catalysis, GIST, Gwangju, 61005, South Korea
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12
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Renfrew SE, Starr DE, Strasser P. Electrochemical Approaches toward CO2 Capture and Concentration. ACS Catal 2020. [DOI: 10.1021/acscatal.0c03639] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Sara E. Renfrew
- Department of Chemistry, Technical University Berlin, Straße des 17. Juni 124, 10623 Berlin, Germany
| | - David E. Starr
- Institute for Solar Fuels Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, 14109 Berlin, Germany
| | - Peter Strasser
- Department of Chemistry, Technical University Berlin, Straße des 17. Juni 124, 10623 Berlin, Germany
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13
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Pore-Filled Anion-Exchange Membranes with Double Cross-Linking Structure for Fuel Cells and Redox Flow Batteries. ENERGIES 2020. [DOI: 10.3390/en13184761] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
In this work, high-performance pore-filled anion-exchange membranes (PFAEMs) with double cross-linking structures have been successfully developed for application to promising electrochemical energy conversion systems, such as alkaline direct liquid fuel cells (ADLFCs) and vanadium redox flow batteries (VRFBs). Specifically, two kinds of porous polytetrafluoroethylene (PTFE) substrates, with different hydrophilicities, were utilized for the membrane fabrication. The PTFE-based PFAEMs revealed, both excellent electrochemical characteristics, and chemical stability in harsh environments. It was proven that the use of a hydrophilic porous substrate is more desirable for the efficient power generation of ADLFCs, mainly owing to the facilitated transport of hydroxyl ions through the membrane, showing an excellent maximum power density of around 400 mW cm−2 at 60 °C. In the case of VRFB, however, the battery cell employing the hydrophobic PTFE-based PFAEM exhibited the highest energy efficiency (87%, cf. AMX = 82%) among the tested membranes, because the crossover rate of vanadium redox species through the membrane most significantly affects the VRFB efficiency. The results imply that the properties of a porous substrate for preparing the membranes should match the operating environment, for successful applications to electrochemical energy conversion processes.
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14
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Shu Q, Legrand L, Kuntke P, Tedesco M, Hamelers HVM. Electrochemical Regeneration of Spent Alkaline Absorbent from Direct Air Capture. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:8990-8998. [PMID: 32584554 PMCID: PMC7377355 DOI: 10.1021/acs.est.0c01977] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 06/24/2020] [Accepted: 06/25/2020] [Indexed: 06/10/2023]
Abstract
CO2 capture from the atmosphere (or direct air capture) is widely recognized as a promising solution to reach negative emissions, and technologies using alkaline solutions as absorbent have already been demonstrated on a full scale. In the conventional temperature swing process, the subsequent regeneration of the alkaline solution is highly energy-demanding. In this study, we experimentally demonstrate simultaneous solvent regeneration and CO2 desorption in a continuous system using a H2-recycling electrochemical cell. A pH gradient is created in the electrochemical cell so that CO2 is desorbed at a low pH, while an alkaline capture solution (NaOH) is regenerated at high pH. By testing the cell under different working conditions, we experimentally achieved CO2 desorption with an energy consumption of 374 kJ·mol-1 CO2 and a CO2 purity higher than 95%. Moreover, our theoretical calculations show that a minimum energy consumption of 164 kJ·mol-1 CO2 could be achieved. Overall, the H2-recycling electrochemical cell allowed us to accomplish the simultaneous desorption of high-purity CO2 stream and regeneration of up to 59% of the CO2 capture capacity of the absorbent. These results are promising toward the upscaling of an energy-effective process for direct air capture.
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Affiliation(s)
- Qingdian Shu
- Wetsus,
European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9, 8911 MA Leeuwarden, The Netherlands
- Department
of Environmental Technology, Wageningen
University, Bornse Weilanden 9, P.O. Box 17, 6700
AA Wageningen, The Netherlands
| | - Louis Legrand
- Wetsus,
European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9, 8911 MA Leeuwarden, The Netherlands
- Department
of Environmental Technology, Wageningen
University, Bornse Weilanden 9, P.O. Box 17, 6700
AA Wageningen, The Netherlands
| | - Philipp Kuntke
- Wetsus,
European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9, 8911 MA Leeuwarden, The Netherlands
- Department
of Environmental Technology, Wageningen
University, Bornse Weilanden 9, P.O. Box 17, 6700
AA Wageningen, The Netherlands
| | - Michele Tedesco
- Wetsus,
European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9, 8911 MA Leeuwarden, The Netherlands
| | - Hubertus V. M. Hamelers
- Wetsus,
European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9, 8911 MA Leeuwarden, The Netherlands
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15
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Anion-regulated selective growth ultrafine copper templates in carbon nanosheets network toward highly efficient gas capture. J Colloid Interface Sci 2020; 564:296-302. [DOI: 10.1016/j.jcis.2019.12.127] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 12/25/2019] [Accepted: 12/28/2019] [Indexed: 01/22/2023]
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16
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Rahimi M, Catalini G, Puccini M, Hatton TA. Bench-scale demonstration of CO2 capture with an electrochemically driven proton concentration process. RSC Adv 2020; 10:16832-16843. [PMID: 35496931 PMCID: PMC9053237 DOI: 10.1039/d0ra02450c] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Accepted: 04/21/2020] [Indexed: 11/21/2022] Open
Abstract
A bench-scale demonstration of CO2 capture from industrial flue gas with an electrochemically driven proton concentration process was demonstrated.
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Affiliation(s)
- Mohammad Rahimi
- Department of Chemical Engineering
- Massachusetts Institute of Technology
- Cambridge
- USA
| | - Giulia Catalini
- Department of Chemical Engineering
- Massachusetts Institute of Technology
- Cambridge
- USA
- Department of Civil and Industrial Engineering
| | - Monica Puccini
- Department of Civil and Industrial Engineering
- University of Pisa
- 561226 Pisa
- Italy
| | - T. Alan Hatton
- Department of Chemical Engineering
- Massachusetts Institute of Technology
- Cambridge
- USA
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