Divergent Synthesis of Bipolar Membranes Combining Strong Interfacial Adhesion and High-Rate Capability DOI
Y.-H. Kao, Lihaokun Chen, Shannon W. Boettcher

et al.

ACS Energy Letters, Journal Year: 2024, Volume and Issue: 9(6), P. 2953 - 2959

Published: May 28, 2024

Bipolar membranes are emerging as attractive solid electrolytes for water electrolysis, electrochemical CO2 reduction, and capture by base from electrodialysis. The development of these technologies is currently hampered the resistance current commercial materials under reversed bias, well interfacial incompatibility between layers that can lead to delamination. This letter reports a divergent route nonfluorinated TiO2-catalyzed bipolar membrane, where compatibility governed constructing cation/anion exchange same backbone chemistry. We show this BPM design concept has potential drastically enhance adhesion strength at junction, without compromising rate capability membrane electrolysis conditions.

Language: Английский

Backbone Engineering of Polymeric Catalysts for High‐Performance CO2 Reduction in Bipolar Membrane Zero‐Gap Electrolyzer DOI Creative Commons
Geng Li, Libei Huang,

Chengpeng Wei

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(15)

Published: Feb. 13, 2024

Abstract Bipolar membranes (BPMs) have emerged as a promising solution for mitigating CO 2 losses, salt precipitation and high maintenance costs associated with the commonly used anion‐exchange membrane electrode assembly reduction reaction (CO RR). However, industrial implementation of BPM‐based zero‐gap electrolyzer is hampered by poor RR performance, largely attributed to local acidic environment. Here, we report backbone engineering strategy improve performance molecular catalysts in electrolyzers covalently grafting cobalt tetraaminophthalocyanine onto positively charged polyfluorene (PF‐CoTAPc). PF‐CoTAPc shows acid tolerance BPM (BPMEA), achieving FE 82.6 % at 100 mA/cm utilization efficiency 87.8 %. Notably, selectivity, carbon long‐term stability BPMEA outperform reported systems. We attribute enhancement stable cationic shield double layer suppression proton migration, ultimately inhibiting undesired hydrogen evolution improving selectivity. Techno‐economic analysis least energy consumption (957 kJ/mol) catalyst BPMEA. Our findings provide viable designing efficient environments.

Language: Английский

Citations

11
Comparing Advanced Bipolar Membranes for High-Current Electrodialysis and Membrane Electrolysis DOI
Olivia T. Vulpin, James B. Mitchell, Lihaokun Chen

et al.

ACS Energy Letters, Journal Year: 2025, Volume and Issue: unknown, P. 845 - 852

Published: Jan. 18, 2025

Advanced bipolar membranes (BPMs) with low water-dissociation overpotential (ηwd) may enable new electrochemical technologies for electrolysis, fuel cells, acid–base synthesis, brine remediation, lithium-battery recycling, and cement production. However, these advanced BPMs have only been demonstrated in BPM water electrolysis (BPMWE) configurations where the is under static compression by porous-transport layers. It important to study applications like electrodialysis large degrees of are not possible. We present a (BPMED) platform measure compare BPMWE BPMED systems. show half ηwd compared commercial while maintaining ∼90% current efficiency from 0.05–0.5 A cm–2. The values are, however, about 0.2 V higher at 0.5 cm–2 than those BPMWE. Regardless, results that developed optimized well-suited next-generation high-current-density technologies.

Language: Английский

Citations

1
Current progresses in the analysis, treatment and resource utilization of industrial waste salt in China: A comprehensive review DOI
Ling Feng,

Binghui Tian,

Ming Zhu

et al.

Resources Conservation and Recycling, Journal Year: 2025, Volume and Issue: 217, P. 108224 - 108224

Published: Feb. 28, 2025

Language: Английский

Citations

1
Fast and selective ion transport in ultrahigh-charge-density membranes DOI
David Kitto, Carolina Espinoza, José C. Díaz

et al.

Nature Chemical Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: April 11, 2025

Language: Английский

Citations

1
Review on high‐performance polymeric bipolar membrane design and novel electrochemical applications DOI Creative Commons

Junying Yan,

Weisheng Yu, Zihao Wang

et al.

Aggregate, Journal Year: 2024, Volume and Issue: 5(4)

Published: March 4, 2024

Abstract Electrochemical devices allow the conversion and storage of renewable energy into high‐value chemicals to mitigate carbon emissions, such as hydrogen production by water electrolysis, dioxide reduction, electrochemical synthesis ammonia. Independent regulation electrode pH environment is essential for optimizing reaction kinetics enriching catalyst species. The in situ dissociation (WD, ) bipolar membranes (BPMs) offers possibility realizing this adjustment. Here, design principles high‐performance polymeric BPMs device applications are presented analyzing connecting WD current–voltage curves. structure–transport property relationships membrane durability, including chemical mechanical stability anion‐ cation‐exchange layers well integrality interfacial junction, systematically discussed. advantages new major challenges break through also highlighted. improved ion transport layer minimized overpotential ohmic loss at high current densities expected facilitate promotion from conventional novel applications.

Language: Английский

Citations

8
Ultra-antiwetting Membrane for Hypersaline Water Crystallization in Membrane Distillation DOI
Ruixue Zhao, Fanxu Meng, Qinghao Wu

et al.

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(33), P. 14929 - 14939

Published: Aug. 10, 2024

Membrane distillation (MD) has great potential in the management of hypersaline water for zero liquid discharge (ZLD) due to its high salinity tolerance. However, membrane wetting issue significantly restricts practical application. In this study, a composite tailored extreme concentrations and even crystallization is synthesized by coating commercial hydrophobic porous with film containing dense polyamide layer, cation exchange layer (CEL), an anion (AEL). When used direct contact MD treating 100 g L

Language: Английский

Citations

7
Toward a Circular Lithium Economy with Electrodialysis: Upcycling Spent Battery Leachates with Selective and Bipolar Ion-Exchange Membranes DOI
Zi Hao Foo,

Trent R. Lee,

Jakob M. Wegmueller

et al.

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(43), P. 19486 - 19500

Published: Oct. 18, 2024

Recycling spent lithium-ion batteries offers a sustainable solution to reduce ecological degradation from mining and mitigate raw material shortages price volatility. This study investigates using electrodialysis with selective bipolar ion-exchange membranes establish circular economy for batteries. An experimental data set of over 1700 ion concentration measurements across five current densities, two compositions, three pH levels supports the techno-economic analysis. Selective (SED) isolates lithium ions battery leachates, yielding 99% Li-pure retentate 68.8% retention, achieving relative ionic fluxes up 2.41 Li+ transition metal cations selectivity 5.64 monovalent cations. Bipolar membrane (BMED) converts LiCl into high-purity LiOH HCl, essential remanufacturing reducing acid consumption via recycling. High densities leakage, leakage as low 0.03%, though hydronium hydroxide in BMED remains high at 11–20%. Our analysis projects production costs between USD 1.1 3.6 per kilogram, significantly lower than prices. Optimal SED conditions are identified, emphasizing need control proton transport improve cobalt–lithium separation enhance cost efficiency.

Language: Английский

Citations

6
Asymmetric Bipolar Membrane for High Current Density Electrodialysis Operation with Exceptional Stability DOI
Éowyn Lucas, Justin C. Bui, T. Nathan Stovall

et al.

ACS Energy Letters, Journal Year: 2024, Volume and Issue: 9(11), P. 5596 - 5605

Published: Oct. 28, 2024

Bipolar membranes (BPMs) enable isolated acidic/alkaline regions in electrochemical devices, facilitating optimized environments for separations and catalysis. For economic viability, BPMs must attain stable, high current density operation with low overpotentials a freestanding configuration. We report an asymmetric, graphene oxide (GrOx)-catalyzed BPM capable of electrodialysis at 1 A cm–2 <250 mV. Use thin anion-exchange layer improves water transport while maintaining near unity Faradaic efficiency acid base generation. Voltage stability exceeding 1100 h average drift 70 μV/h 80 mA 100 −300 500 implementation stack demonstrate real-world applicability. Continuum modeling reveals that dissociation GrOx is both catalyzed electric-field enhanced, where pKa moieties on enhance local electric fields serve as active sites surface-catalyzed dissociation. These results establish commercially viable provide fundamental insight to advance design next-generation devices.

Language: Английский

Citations

6
ACS Spotlight: Bipolar Membranes for Electrochemical Energy Conversion, Chemical Manufacturing, and Separations DOI
Tanmay Kulkarni, Bin Yang, Xiaoliu Zhang

et al.

ACS Applied Energy Materials, Journal Year: 2024, Volume and Issue: unknown

Published: April 5, 2024

Sustainable energy conversion, chemical manufacturing, and separations are central to addressing the world's environmental challenges. Electrochemical platforms stand as a cornerstone in these challenges because they low exergy can be powered on renewable electrons. In electrochemical systems, bipolar membranes (BPMs) emerging unique class of ion exchange poised revolutionize various processes via pH control anode cathode chambers situ adjustment. this Spotlight Review, we provide comprehensive review utilizing BPMs for conversion (water electrolyzers hydrogen production, fuel cells, flow batteries), manufacturing (electrolyzers that convert carbon dioxide into value-added chemicals nitrate ammonia), separations. The motivation using BPMs, well their performance durability, disseminated. We also discuss current impede BPM systems from competing with state-of-the-art monopolar ion-exchange (e.g., anion/hydroxide cation/proton membranes). covers molecular modeling continuum efforts understand basic mechanisms govern performance.

Language: Английский

Citations

4
Similarities and differences between internal short-circuit current and hydrogen crossover current in a proton exchange membrane fuel cell DOI
Feng Ding,

Xin Zhan,

Tao Wei

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 494, P. 153091 - 153091

Published: June 12, 2024

Language: Английский

Citations

4