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Bashkatov A, Park S, Demirkır Ç, Wood JA, Koper MTM, Lohse D, Krug D. Performance Enhancement of Electrocatalytic Hydrogen Evolution through Coalescence-Induced Bubble Dynamics. J Am Chem Soc 2024; 146:10177-10186. [PMID: 38538570 PMCID: PMC11009962 DOI: 10.1021/jacs.4c02018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 03/14/2024] [Accepted: 03/14/2024] [Indexed: 04/11/2024]
Abstract
The evolution of electrogenerated gas bubbles during water electrolysis can significantly hamper the overall process efficiency. Promoting the departure of electrochemically generated bubbles during (water) electrolysis is therefore beneficial. For a single bubble, a departure from the electrode surface occurs when buoyancy wins over the downward-acting forces (e.g., contact, Marangoni, and electric forces). In this work, the dynamics of a pair of H2 bubbles produced during the hydrogen evolution reaction in 0.5 M H2SO4 using a dual platinum microelectrode system is systematically studied by varying the electrode distance and the cathodic potential. By combining high-speed imaging and electrochemical analysis, we demonstrate the importance of bubble-bubble interactions in the departure process. We show that bubble coalescence may lead to substantially earlier bubble departure as compared to buoyancy effects alone, resulting in considerably higher reaction rates at a constant potential. However, due to continued mass input and conservation of momentum, repeated coalescence events with bubbles close to the electrode may drive departed bubbles back to the surface beyond a critical current, which increases with the electrode spacing. The latter leads to the resumption of bubble growth near the electrode surface, followed by buoyancy-driven departure. While less favorable at small electrode spacing, this configuration proves to be very beneficial at larger separations, increasing the mean current up to 2.4 times compared to a single electrode under the conditions explored in this study.
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Affiliation(s)
- Aleksandr Bashkatov
- Physics
of Fluids Group, Max Planck Center for Complex Fluid Dynamics and
J. M. Burgers Centre for Fluid Dynamics, University of Twente, Enschede 7500 AE, Netherlands
| | - Sunghak Park
- Leiden
Institute of Chemistry, Leiden University, Leiden 2333 CC, Netherlands
| | - Çayan Demirkır
- Physics
of Fluids Group, Max Planck Center for Complex Fluid Dynamics and
J. M. Burgers Centre for Fluid Dynamics, University of Twente, Enschede 7500 AE, Netherlands
| | - Jeffery A. Wood
- Soft
Matter, Fluidics and Interfaces, MESA+ Institute for Nanotechnology,
J. M. Burgers Centre for Fluid Dynamics, University of Twente, Enschede 7500 AE, Netherlands
| | - Marc T. M. Koper
- Leiden
Institute of Chemistry, Leiden University, Leiden 2333 CC, Netherlands
| | - Detlef Lohse
- Physics
of Fluids Group, Max Planck Center for Complex Fluid Dynamics and
J. M. Burgers Centre for Fluid Dynamics, University of Twente, Enschede 7500 AE, Netherlands
- Max
Planck Institute for Dynamics and Self-Organization, Göttingen 37077, Germany
| | - Dominik Krug
- Physics
of Fluids Group, Max Planck Center for Complex Fluid Dynamics and
J. M. Burgers Centre for Fluid Dynamics, University of Twente, Enschede 7500 AE, Netherlands
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2
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Shen X, Cao M. Bicontinuous Interfacially Jammed Emulsion Gels (Bijels): Preparation, Control Strategies, and Derived Porous Materials. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:574. [PMID: 38607109 PMCID: PMC11013138 DOI: 10.3390/nano14070574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Revised: 03/24/2024] [Accepted: 03/25/2024] [Indexed: 04/13/2024]
Abstract
Bicontinuous interfacially jammed emulsion gels, also known as Bijels, are a new type of soft condensed matter. Over the last decade, Bijels have attracted considerable attention because of their unique morphology, property, and broad application prospects. In the present review, we summarize the preparation methods and main control strategies of Bijels, focusing on the research progress and application of Bijels as templates for porous materials preparation in recent years. The potential future directions and applications of Bijels are also envisaged.
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Affiliation(s)
| | - Meiwen Cao
- State Key Laboratory of Heavy Oil Processing, Department of Biological and Energy Chemical Engineering, College of Chemical Engineering, China University of Petroleum (East China), 66 Changjiang West Road, Qingdao 266580, China;
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3
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Wu R, Hu Z, Zhang H, Wang J, Qin C, Zhou Y. Bubbles in Porous Electrodes for Alkaline Water Electrolysis. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:721-733. [PMID: 38147650 DOI: 10.1021/acs.langmuir.3c02925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2023]
Abstract
Porous electrodes with high specific surface areas have been commonly employed for alkaline water electrolysis. The gas bubbles generated in electrodes due to water electrolysis, however, can screen the reaction sites and hinder reactant transport, thereby deteriorating the performance of electrodes. Hence, an in-depth understanding of the behavior of bubbles in porous electrodes is of great importance. Nevertheless, since porous electrodes are opaque, direct observation of bubbles therein is still a challenge. In this work, we have successfully captured the behavior of bubbles in the pores at the side surfaces of nickel-based porous electrodes. Two types of porous electrodes are employed: the ones with straight pores along the gravitational direction and the ones with tortuous pores. In the porous electrodes with tortuous pores, the moving bubbles are prone to collide with the solid matrix, thereby leading to the accumulation of bubbles in the pores and hence bubble trapping. By contrast, in the porous electrodes with straight pores, bubbles are seldom trapped; and when two bubbles near the wall surfaces coalesce, the merged bubble can jump away from the wall surfaces, releasing more active surfaces for reaction. As a result, the porous electrodes with straight pores, although with lower specific surface areas, are superior to those with tortuous pores. The relationship among the pore structures of porous electrodes, bubble behavior, and electrode performance disclosed in this work provides deep insights into the design of porous electrodes.
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Affiliation(s)
- Rui Wu
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China
- School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
- China-UK Low Carbon College, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Zhihao Hu
- China-UK Low Carbon College, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Haojing Zhang
- China-UK Low Carbon College, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jinqing Wang
- College of Metrology and Measurement Engineering, China Jiliang University, Hangzhou, Zhejiang 310018, China
| | - Chaozhong Qin
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China
| | - Ye Zhou
- China-UK Low Carbon College, Shanghai Jiao Tong University, Shanghai 200240, China
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4
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Karimi V, Sharma R, Morgen P, Andersen SM. Multiple Bubble Removal Strategies to Promote Oxygen Evolution Reaction: Mechanistic Understandings from Orientation, Rotation, and Sonication Perspectives. ACS APPLIED MATERIALS & INTERFACES 2023; 15:49233-49245. [PMID: 37847299 DOI: 10.1021/acsami.3c11290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2023]
Abstract
Bubble coverage of catalytically active sites is one of the well-known bottlenecks to the kinetics of the oxygen evolution reaction (OER). Herein, various bubble removal approaches (electrode orientation, rotating, and sonication) were considered for the OER performance evaluation of a state-of-the-art Ir-based electrocatalyst. Key parameters, such as catalyst mass loss, activity, overpotential, and charge- and mass-transfer mechanisms, were analyzed. First, it was suggested that a suitable orientation of the working electrode facilitates coalescence and sliding bubble effects on the catalyst surface, leading to better electrochemical performance than those of the traditional rotating disk electrode (RDE) configuration. Then, the convection and secondary Bjerknes force were explained as the responsible phenomena in improving the OER activity in the RDE and sonication methods. Finally, simultaneous implementation of the methods enhanced the catalyst mass activity up to 164% and provided fast charge-transfer kinetics and low double-layer capacitance, which eventually led to a 22% reduction in overpotential, while the catalyst loss slightly increased from 1.93 to 3.88%.
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Affiliation(s)
- Vahid Karimi
- Department of Green Technology, University of Southern Denmark, Campusvej 55, Odense M 5230, Denmark
| | - Raghunandan Sharma
- Department of Green Technology, University of Southern Denmark, Campusvej 55, Odense M 5230, Denmark
| | - Per Morgen
- Department of Green Technology, University of Southern Denmark, Campusvej 55, Odense M 5230, Denmark
| | - Shuang Ma Andersen
- Department of Green Technology, University of Southern Denmark, Campusvej 55, Odense M 5230, Denmark
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5
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Gonthier A, Botvinick EL, Grosberg A, Mohraz A. Effect of Porous Substrate Topographies on Cell Dynamics: A Computational Study. ACS Biomater Sci Eng 2023; 9:5666-5678. [PMID: 37713253 PMCID: PMC10565724 DOI: 10.1021/acsbiomaterials.3c01008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Accepted: 08/31/2023] [Indexed: 09/16/2023]
Abstract
Controlling cell-substrate interactions via the microstructural characteristics of biomaterials offers an advantageous path for modulating cell dynamics, mechanosensing, and migration, as well as for designing immune-modulating implants, all without the drawbacks of chemical-based triggers. Specifically, recent in vivo studies have suggested that a porous implant's microscale curvature landscape can significantly impact cell behavior and ultimately the immune response. To investigate such cell-substrate interactions, we utilized a 3D computational model incorporating the minimum necessary physics of cell migration and cell-substrate interactions needed to replicate known in vitro behaviors. This model specifically incorporates the effect of membrane tension, which was found to be necessary to replicate in vitro cell behavior on curved surfaces. Our simulated substrates represent two classes of porous materials recently used in implant studies, which have markedly different microscale curvature distributions and pore geometries. We found distinct differences between the overall migration behaviors, shapes, and actin polymerization dynamics of cells interacting with the two substrates. These differences were correlated to the shape energy of the cells as they interacted with the porous substrates, in effect interpreting substrate topography as an energetic landscape interrogated by cells. Our results demonstrate that microscale curvature directly influences cell shape and migration and, therefore, is likely to influence cell behavior. This supports further investigation of the relationship between the surface topography of implanted materials and the characteristic immune response, a complete understanding of which would broadly advance principles of biomaterial design.
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Affiliation(s)
- Alyse
R. Gonthier
- Department
of Materials Science & Engineering, University of California, Irvine, Irvine, California 92697, United States
| | - Elliot L. Botvinick
- Department
of Biomedical Engineering, University of
California, Irvine, Irvine, California 92697, United States
- Center
for Complex Biological Systems, University
of California, Irvine, Irvine, California 92697, United States
- Beckman
Laser Institute and Medical Clinic, University
of California, Irvine, Irvine, California 92697, United States
- Department
of Surgery,University of California, Irvine, Irvine, California 92697, United States
- Edwards
Lifesciences
Foundation Cardiovascular Innovation & Research Center, University of California, Irvine, Irvine, California 92697, United States
| | - Anna Grosberg
- Department
of Biomedical Engineering, University of
California, Irvine, Irvine, California 92697, United States
- Center
for Complex Biological Systems, University
of California, Irvine, Irvine, California 92697, United States
- Edwards
Lifesciences
Foundation Cardiovascular Innovation & Research Center, University of California, Irvine, Irvine, California 92697, United States
- Department
of Chemical & Biomolecular Engineering, University of California, Irvine, Irvine, California 92697, United States
- The
NSF-Simons Center for Multiscale Cell Fate Research, University of California, Irvine, Irvine, California 92697, United States
- Sue
and Bill Gross Stem Cell Research Center, University of California, Irvine, Irvine, California 92697, United States
| | - Ali Mohraz
- Department
of Materials Science & Engineering, University of California, Irvine, Irvine, California 92697, United States
- Department
of Chemical & Biomolecular Engineering, University of California, Irvine, Irvine, California 92697, United States
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6
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Zhou Y, Jin N, Ma Y, Cui Y, Wang L, Kwon Y, Lee WK, Zhang W, Ge H, Zhang J. Tube-Sponge-Inspired Hierarchical Electrocatalysts with Boosted Mass and Electron Transfer for Efficient Oxygen Evolution. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2209500. [PMID: 36462219 DOI: 10.1002/adma.202209500] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Revised: 11/29/2022] [Indexed: 06/17/2023]
Abstract
Hindered gas bubble release and limited electron conducting process represent the major bottlenecks for large-scale electrochemical water splitting. Both the desorption of bubbles and continuous electron transport are achievable on the surfaces of biomimetic catalytic materials by designing multiscale structural hierarchy. Inspired by the tubular structures of the deep-sea sponges, an exceptionally active and binder-free porous nickel tube arrays (PNTA) decorated with NiFe-Zn2+ -pore nanosheets (NiFe-PZn ) are fabricated. The PNTA facilitate removal of bubbles and electron transfer in the oxygen evolution reaction by reproducing trunks of the sponges, and simultaneously, the NiFe-PZn increase the number of catalytic active sites by simulating the sponge epidermis. With improved external mass transfer and interior electron transfer, the hierarchical NiFe-PZn @PNTA electrode exhibits superior oxygen evolution reaction performance with an overpotential of 172 mV at 10 mA cm-2 (with a Tafel slope of 50 mV dec-1 ). Furthermore, this electrocatalytic system recorded excellent reaction stability over 360 h with a constant current density of 100 mA cm-2 at the potential of 1.52 V (versus RHE). This work provides a new strategy of designing hierarchical electrocatalysts for highly efficient water splitting.
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Affiliation(s)
- Yaya Zhou
- Department of Materials Science and Engineering, Collaborative Innovation Center of Advanced Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, Nanjing University, Nanjing, 210093, China
- National Laboratory of Solid State Microstructures, Nanjing, 210093, China
| | - Ningxuan Jin
- Department of Materials Science and Engineering, Collaborative Innovation Center of Advanced Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, Nanjing University, Nanjing, 210093, China
- National Laboratory of Solid State Microstructures, Nanjing, 210093, China
| | - Yibing Ma
- Department of Materials Science and Engineering, Collaborative Innovation Center of Advanced Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, Nanjing University, Nanjing, 210093, China
- National Laboratory of Solid State Microstructures, Nanjing, 210093, China
| | - Yushuang Cui
- Department of Materials Science and Engineering, Collaborative Innovation Center of Advanced Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, Nanjing University, Nanjing, 210093, China
- National Laboratory of Solid State Microstructures, Nanjing, 210093, China
| | - Lina Wang
- International Research Center for EM Metamaterials and Institute of Advanced Magnetic Materials, College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou, 310018, China
| | - Yongwoo Kwon
- Department of Materials Science and Engineering, Hongik University, Seoul, 04066, Republic of Korea
| | - Won-Kyu Lee
- Department of Materials Science and Engineering, Hongik University, Seoul, 04066, Republic of Korea
| | - Wei Zhang
- Jiangsu Key Laboratory of Advanced Metallic Materials, School of Materials Science and Engineering, Southeast University, Nanjing, 211189, China
| | - Haixiong Ge
- Department of Materials Science and Engineering, Collaborative Innovation Center of Advanced Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, Nanjing University, Nanjing, 210093, China
- National Laboratory of Solid State Microstructures, Nanjing, 210093, China
| | - Jian Zhang
- International Research Center for EM Metamaterials and Institute of Advanced Magnetic Materials, College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou, 310018, China
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7
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Ching H, Mohraz A. Bijel rheology reveals a 2D colloidal glass wrapped in 3D. SOFT MATTER 2022; 18:4227-4238. [PMID: 35607949 DOI: 10.1039/d2sm00407k] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
We present rheological evidence demonstrating the glass-like nature of bicontinuous interfacially jammed emulsion gels (bijels). Under small amplitude oscillatory shear, bijels exhibited rheological signatures akin to α and β relaxation that are also invariable to interfacial tension changes, behaviors which are reminiscent of caged particle dynamics found in colloidal glasses, and well described by a previously reported adaptation of mode-coupling theory for colloidal glass rheology. Guided by their rheological signatures and supported by particle detachment and attraction energy approximations, we rationalize that bijels can be represented as 2-dimensional (2D) colloidal glasses that percolate in 3-dimensional (3D) space, and attractive interactions are not required for their stability. To provide further support for this conjecture, we qualitatively compare the rheology of bijels and a capillary suspension that is stabilized by strong, rigid capillary bridges between the particles, beyond their limit of linear viscoelasticity. Our results demonstrate that the strong adsorption of particles to the continuous interface and the lack of strong attractive interparticle forces enable recovery by interfacial tension into new jammed configurations after shear deformation. These behaviors are qualitatively different from those in the capillary suspension, where the breaking of attractive interparticle bonds results in dramatic changes to the microstructure and rheology over a narrow range of shear amplitudes. Our findings unveil bijels as 2D colloidal glasses weaving in 3D space and establish that interparticle attractions are not required for stability in bijels, and interfacial jamming alone is sufficient to impart viscoelasticity and gel-like rheology to these materials.
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Affiliation(s)
- Herman Ching
- Department of Chemical and Biomolecular Engineering, University of California, Irvine, CA 92697-2580, USA.
| | - Ali Mohraz
- Department of Chemical and Biomolecular Engineering, University of California, Irvine, CA 92697-2580, USA.
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8
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Khan MA, Sprockel AJ, Macmillan KA, Alting MT, Kharal SP, Boakye-Ansah S, Haase MF. Nanostructured, Fluid-Bicontinuous Gels for Continuous-Flow Liquid-Liquid Extraction. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2109547. [PMID: 35305279 DOI: 10.1002/adma.202109547] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 03/04/2022] [Indexed: 06/14/2023]
Abstract
Fluid-bicontinuous gels are unique materials that allow two distinct fluids to interact through a percolating, rigid scaffold. Current restrictions for their use are the large fluid-channel sizes (>5 µm), limiting the fluid-fluid interaction surface-area, and the inability to flow liquids through the channels. In this work a scalable synthesis route of nanoparticle stabilized fluid-bicontinuous gels with channels sizes below 500 nm and specific surface areas of 2 m2 cm-3 is introduced. Moreover, it is demonstrated that liquids can be pumped through the fluid-bicontinuous gels via electroosmosis. The fast liquid flow in the fluid-bicontinuous gel facilitates their use for molecular separations in continuous-flow liquid-liquid extraction. Together with the high surface areas, liquid flow through fluid-bicontinuous gels enhances their potential as highly permeable porous materials with possible uses as microreaction media, fuel-cell components, and separation membranes.
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Affiliation(s)
- Mohd A Khan
- Van't Hoff Laboratory for Physical and Colloid Chemistry, Department of Chemistry, Debye Institute of Nanomaterials Science, Utrecht University, Utrecht, 3584 CH, The Netherlands
| | - Alessio J Sprockel
- Van't Hoff Laboratory for Physical and Colloid Chemistry, Department of Chemistry, Debye Institute of Nanomaterials Science, Utrecht University, Utrecht, 3584 CH, The Netherlands
| | - Katherine A Macmillan
- Van't Hoff Laboratory for Physical and Colloid Chemistry, Department of Chemistry, Debye Institute of Nanomaterials Science, Utrecht University, Utrecht, 3584 CH, The Netherlands
| | - Meyer T Alting
- Van't Hoff Laboratory for Physical and Colloid Chemistry, Department of Chemistry, Debye Institute of Nanomaterials Science, Utrecht University, Utrecht, 3584 CH, The Netherlands
| | - Shankar P Kharal
- Department of Chemical Engineering, Rowan University, Glassboro, NJ, 08028, USA
| | | | - Martin F Haase
- Van't Hoff Laboratory for Physical and Colloid Chemistry, Department of Chemistry, Debye Institute of Nanomaterials Science, Utrecht University, Utrecht, 3584 CH, The Netherlands
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9
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Zhang J, Dong F, Wang C, Wang J, Jiang L, Yu C. Integrated Bundle Electrode with Wettability-Gradient Copper Cones Inducing Continuous Generation, Directional Transport, and Efficient Collection of H 2 Bubbles. ACS APPLIED MATERIALS & INTERFACES 2021; 13:32435-32441. [PMID: 34184535 DOI: 10.1021/acsami.1c04993] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The hydrogen evolution reaction (HER), as an efficient process of converting various energies into high-purity hydrogen, has attracted much attention from both scientific research studies and industrial productions. However, its wide applications still confront considerable difficulties, for example, bubble coverage on the electrode and bubble dispersion in the electrolyte, which will disturb current distribution and isolate active sites from reaction ions resulting in a high reaction overpotential and large Ohmic voltage drop. Consequently, timely removing the generated gas bubbles from the electrode as well as avoiding their direct release into the electrolyte can be an effective approach to address these issues. In this work, we have developed an elegant electrode, that is, the integrated bundle electrode with wettability-gradient copper cones, which is endowed with the multifunctions of continuous generation, direct transport, and efficient collection of hydrogen bubbles. All processes are proceeding on the electrode, which not only remove the generated hydrogen bubbles efficiently but also prevent the hydrogen bubbles from releasing into the electrolyte, which should greatly advance the development of water electrolysis and offer inspirations for people to fabricate more efficient HER devices.
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Affiliation(s)
- Jinke Zhang
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing 100191, P. R. China
| | - Fuyao Dong
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing 100191, P. R. China
| | - Chuqian Wang
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing 100191, P. R. China
| | - Jingming Wang
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Lei Jiang
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing 100191, P. R. China
- Laboratory of Bio-inspired Materials and Interface Sciences, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Cunming Yu
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing 100191, P. R. China
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