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Lin F, Li M, Zeng L, Luo M, Guo S. Intermetallic Nanocrystals for Fuel-Cells-Based Electrocatalysis. Chem Rev 2023; 123:12507-12593. [PMID: 37910391 DOI: 10.1021/acs.chemrev.3c00382] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2023]
Abstract
Electrocatalysis underpins the renewable electrochemical conversions for sustainability, which further replies on metallic nanocrystals as vital electrocatalysts. Intermetallic nanocrystals have been known to show distinct properties compared to their disordered counterparts, and been long explored for functional improvements. Tremendous progresses have been made in the past few years, with notable trend of more precise engineering down to an atomic level and the investigation transferring into more practical membrane electrode assembly (MEA), which motivates this timely review. After addressing the basic thermodynamic and kinetic fundamentals, we discuss classic and latest synthetic strategies that enable not only the formation of intermetallic phase but also the rational control of other catalysis-determinant structural parameters, such as size and morphology. We also demonstrate the emerging intermetallic nanomaterials for potentially further advancement in energy electrocatalysis. Then, we discuss the state-of-the-art characterizations and representative intermetallic electrocatalysts with emphasis on oxygen reduction reaction evaluated in a MEA setup. We summarize this review by laying out existing challenges and offering perspective on future research directions toward practicing intermetallic electrocatalysts for energy conversions.
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Affiliation(s)
- Fangxu Lin
- School of Materials Science and Engineering, Peking University, Beijing 100871, China
- Beijing Innovation Centre for Engineering Science and Advanced Technology, Peking University, Beijing 100871, China
| | - Menggang Li
- School of Materials Science and Engineering, Peking University, Beijing 100871, China
| | - Lingyou Zeng
- School of Materials Science and Engineering, Peking University, Beijing 100871, China
| | - Mingchuan Luo
- School of Materials Science and Engineering, Peking University, Beijing 100871, China
| | - Shaojun Guo
- School of Materials Science and Engineering, Peking University, Beijing 100871, China
- Beijing Innovation Centre for Engineering Science and Advanced Technology, Peking University, Beijing 100871, China
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2
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Yan J, Xiao W, Zeng R, Zhao Z, Li X, Wang L. Local environmental engineering for highly stable single-atom Pt 1/CeO 2catalysts: first-principles insights. NANOTECHNOLOGY 2023; 34:505403. [PMID: 37789667 DOI: 10.1088/1361-6528/acf3f2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Accepted: 08/25/2023] [Indexed: 10/05/2023]
Abstract
Single-atom Pt1/CeO2catalysts may cope with the high cost and durability issues of fuel cell electrocatalysts. In the present study, the stability and underlying interaction mechanisms of the Pt1/CeO2system are systematically investigated using first-principles calculations. The Pt adsorption energy on CeO2surfaces can be divided into chemical interaction and surface deformation parts. The interaction energy, mainly associated with the local chemical environment, i.e. the number of Pt-O bonds, plays a major role in Pt1/CeO2stability. When forming a Pt-4O configuration, the catalytic system has the highest stability and Pt is oxidized to Pt2+. An electronic metal-support interaction mechanism is proposed for understanding Pt1/CeO2stability. In addition, our calculations show that the Pt1/CeO2(100) system is dynamically stable, and the external O environment can promote the further oxidation of Pt to Ptn+(2 ≤n< 4). The present study provides useful guidance for the experimental development of highly stable and efficient electrocatalysts for fuel cell applications.
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Affiliation(s)
- Jiasi Yan
- State Key Laboratory of Nonferrous Metals and Processes & National Engineering Research Center of Nonferrous Metals Materials and Products for New Energy, China GRINM Group Co., Ltd, Beijing 100088, People's Republic of China
- GRIMAT Engineering Institute Co., Ltd, Beijing 101407, People's Republic of China
- General Research Institute for Nonferrous Metals, Beijing 100088, People's Republic of China
- Department of Materials Physics and Chemistry, School of Materials Science and Engineering, Key Laboratory for Anisotropy and Texture of Materials, Ministry of Education, Northeastern University, Shenyang, 110819, People's Republic of China
| | - Wei Xiao
- State Key Laboratory of Nonferrous Metals and Processes & National Engineering Research Center of Nonferrous Metals Materials and Products for New Energy, China GRINM Group Co., Ltd, Beijing 100088, People's Republic of China
- GRIMAT Engineering Institute Co., Ltd, Beijing 101407, People's Republic of China
- General Research Institute for Nonferrous Metals, Beijing 100088, People's Republic of China
| | - Rong Zeng
- State Key Laboratory of Nonferrous Metals and Processes & National Engineering Research Center of Nonferrous Metals Materials and Products for New Energy, China GRINM Group Co., Ltd, Beijing 100088, People's Republic of China
- GRIMAT Engineering Institute Co., Ltd, Beijing 101407, People's Republic of China
- General Research Institute for Nonferrous Metals, Beijing 100088, People's Republic of China
| | - Zheng Zhao
- National Engineering Research Center for Rare Earth, GRINM Group Corporation Limited, Beijing 100088, People's Republic of China
| | - Xiaowu Li
- Department of Materials Physics and Chemistry, School of Materials Science and Engineering, Key Laboratory for Anisotropy and Texture of Materials, Ministry of Education, Northeastern University, Shenyang, 110819, People's Republic of China
| | - Ligen Wang
- State Key Laboratory of Nonferrous Metals and Processes & National Engineering Research Center of Nonferrous Metals Materials and Products for New Energy, China GRINM Group Co., Ltd, Beijing 100088, People's Republic of China
- GRIMAT Engineering Institute Co., Ltd, Beijing 101407, People's Republic of China
- General Research Institute for Nonferrous Metals, Beijing 100088, People's Republic of China
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3
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Park TW, Kang YL, Kim YN, Park WI. High-Resolution Nanotransfer Printing of Porous Crossbar Array Using Patterned Metal Molds by Extreme-Pressure Imprint Lithography. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2335. [PMID: 37630919 PMCID: PMC10458917 DOI: 10.3390/nano13162335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 08/10/2023] [Accepted: 08/11/2023] [Indexed: 08/27/2023]
Abstract
High-resolution nanotransfer printing (nTP) technologies have attracted a tremendous amount of attention due to their excellent patternability, high productivity, and cost-effectiveness. However, there is still a need to develop low-cost mold manufacturing methods, because most nTP techniques generally require the use of patterned molds fabricated by high-cost lithography technology. Here, we introduce a novel nTP strategy that uses imprinted metal molds to serve as an alternative to a Si stamp in the transfer printing process. We present a method by which to fabricate rigid surface-patterned metallic molds (Zn, Al, and Ni) based on the process of direct extreme-pressure imprint lithography (EPIL). We also demonstrate the nanoscale pattern formation of functional materials, in this case Au, TiO2, and GST, onto diverse surfaces of SiO2/Si, polished metal, and slippery glass by the versatile nTP method using the imprinted metallic molds with nanopatterns. Furthermore, we show the patterning results of nanoporous crossbar arrays on colorless polyimide (CPI) by a repeated nTP process. We expect that this combined nanopatterning method of EPIL and nTP processes will be extendable to the fabrication of various nanodevices with complex circuits based on micro/nanostructures.
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Affiliation(s)
| | | | | | - Woon Ik Park
- Department of Materials Science and Engineering, Pukyong National University (PKNU), Busan 48513, Republic of Korea; (T.W.P.); (Y.L.K.); (Y.N.K.)
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4
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Sharifian M, Kern W, Riess G. A Bird's-Eye View on Polymer-Based Hydrogen Carriers for Mobile Applications. Polymers (Basel) 2022; 14:4512. [PMID: 36365506 PMCID: PMC9654451 DOI: 10.3390/polym14214512] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 10/07/2022] [Accepted: 10/12/2022] [Indexed: 10/29/2023] Open
Abstract
Globally, reducing CO2 emissions is an urgent priority. The hydrogen economy is a system that offers long-term solutions for a secure energy future and the CO2 crisis. From hydrogen production to consumption, storing systems are the foundation of a viable hydrogen economy. Each step has been the topic of intense research for decades; however, the development of a viable, safe, and efficient strategy for the storage of hydrogen remains the most challenging one. Storing hydrogen in polymer-based carriers can realize a more compact and much safer approach that does not require high pressure and cryogenic temperature, with the potential to reach the targets determined by the United States Department of Energy. This review highlights an outline of the major polymeric material groups that are capable of storing and releasing hydrogen reversibly. According to the hydrogen storage results, there is no optimal hydrogen storage system for all stationary and automotive applications so far. Additionally, a comparison is made between different polymeric carriers and relevant solid-state hydrogen carriers to better understand the amount of hydrogen that can be stored and released realistically.
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Affiliation(s)
- Mohammadhossein Sharifian
- Montanuniversität Leoben, Chair in Chemistry of Polymeric Materials, Otto-Glöckel-Strasse 2, A-8700 Leoben, Austria
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Thangarasu S, Oh TH. Impact of Polymers on Magnesium-Based Hydrogen Storage Systems. Polymers (Basel) 2022; 14:2608. [PMID: 35808653 PMCID: PMC9269507 DOI: 10.3390/polym14132608] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 06/20/2022] [Accepted: 06/23/2022] [Indexed: 02/01/2023] Open
Abstract
In the present scenario, much importance has been provided to hydrogen energy systems (HES) in the energy sector because of their clean and green behavior during utilization. The developments of novel techniques and materials have focused on overcoming the practical difficulties in the HES (production, storage and utilization). Comparatively, considerable attention needs to be provided in the hydrogen storage systems (HSS) because of physical-based storage (compressed gas, cold/cryo compressed and liquid) issues such as low gravimetric/volumetric density, storage conditions/parameters and safety. In material-based HSS, a high amount of hydrogen can be effectively stored in materials via physical or chemical bonds. In different hydride materials, Mg-based hydrides (Mg-H) showed considerable benefits such as low density, hydrogen uptake and reversibility. However, the inferior sorption kinetics and severe oxidation/contamination at exposure to air limit its benefits. There are numerous kinds of efforts, like the inclusion of catalysts that have been made for Mg-H to alter the thermodynamic-related issues. Still, those efforts do not overcome the oxidation/contamination-related issues. The developments of Mg-H encapsulated by gas-selective polymers can effectively and positively influence hydrogen sorption kinetics and prevent the Mg-H from contaminating (air and moisture). In this review, the impact of different polymers (carboxymethyl cellulose, polystyrene, polyimide, polypyrrole, polyvinylpyrrolidone, polyvinylidene fluoride, polymethylpentene, and poly(methyl methacrylate)) with Mg-H systems has been systematically reviewed. In polymer-encapsulated Mg-H, the polymers act as a barrier for the reaction between Mg-H and O2/H2O, selectively allowing the H2 gas and preventing the aggregation of hydride nanoparticles. Thus, the H2 uptake amount and sorption kinetics improved considerably in Mg-H.
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Affiliation(s)
| | - Tae Hwan Oh
- School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Korea
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6
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Biohydrogen production from glycerol by novel Clostridium sp. SH25 and its application to biohydrogen car operation. KOREAN J CHEM ENG 2022. [DOI: 10.1007/s11814-022-1146-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Bai H, Zhang J, Wang H, Xiang Y, Lu S. Highly conductive quaternary ammonium-containing cross-linked poly(vinyl pyrrolidone) for high-temperature PEM fuel cells with high-performance. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2021.120194] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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8
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Performance improvement of a PEMFC with dead-end anode by using CFD-Taguchi approach. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2021.115909] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Oka K, Tobita Y, Kataoka M, Kobayashi K, Kaiwa Y, Nishide H, Oyaizu K. Hydrophilic isopropanol/acetone‐substituted polymers for safe hydrogen storage. POLYM INT 2021. [DOI: 10.1002/pi.6337] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Kouki Oka
- Department of Applied Chemistry and Research Institute for Science and Engineering Waseda University Shinjuku Japan
| | - Yuka Tobita
- Department of Applied Chemistry and Research Institute for Science and Engineering Waseda University Shinjuku Japan
| | - Miho Kataoka
- Department of Applied Chemistry and Research Institute for Science and Engineering Waseda University Shinjuku Japan
| | - Kazuki Kobayashi
- Department of Applied Chemistry and Research Institute for Science and Engineering Waseda University Shinjuku Japan
| | - Yusuke Kaiwa
- Department of Applied Chemistry and Research Institute for Science and Engineering Waseda University Shinjuku Japan
| | - Hiroyuki Nishide
- Department of Applied Chemistry and Research Institute for Science and Engineering Waseda University Shinjuku Japan
| | - Kenichi Oyaizu
- Department of Applied Chemistry and Research Institute for Science and Engineering Waseda University Shinjuku Japan
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Oka K, Kataoka M, Kaiwa Y, Oyaizu K. Alcohol-Substituted Vinyl Polymers for Stockpiling Hydrogen. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2021. [DOI: 10.1246/bcsj.20210283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Kouki Oka
- Department of Applied Chemistry, and Research Institute for Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan
| | - Miho Kataoka
- Department of Applied Chemistry, and Research Institute for Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan
| | - Yusuke Kaiwa
- Department of Applied Chemistry, and Research Institute for Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan
| | - Kenichi Oyaizu
- Department of Applied Chemistry, and Research Institute for Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan
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Kakihana Y, Hashim NA, Mizuno T, Anno M, Higa M. Ionic Transport Properties of Cation-Exchange Membranes Prepared from Poly(vinyl alcohol- b-sodium Styrene Sulfonate). MEMBRANES 2021; 11:452. [PMID: 34205395 PMCID: PMC8234076 DOI: 10.3390/membranes11060452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 06/14/2021] [Accepted: 06/16/2021] [Indexed: 11/16/2022]
Abstract
Membrane resistance and permselectivity for counter-ions have important roles in determining the performance of cation-exchange membranes (CEMs). In this study, PVA-based polyanions-poly(vinyl alcohol-b-sodium styrene sulfonate)-were synthesized, changing the molar percentages CCEG of the cation-exchange groups with respect to the vinyl alcohol groups. From the block copolymer, poly(vinyl alcohol) (PVA)-based CEMs, hereafter called "B-CEMs", were prepared by crosslinking the PVA chains with glutaraldehyde (GA) solution at various GA concentrations CGA. The ionic transport properties of the B-CEMs were compared with those previously reported for the CEMs prepared using a random copolymer-poly(vinyl alcohol-co-2-acrylamido-2-methylpropane sulfonic acid)-hereafter called "R-CEMs". The B-CEMs had lower water content than the R-CEMs at equal molar percentages of the cation-exchange groups. The charge density of the B-CEMs increased as CCEG increased, and reached a maximum value, which increased with increasing CGA. A maximum charge density of 1.47 mol/dm3 was obtained for a B-CEM with CCEG = 2.9 mol% and CGA = 0.10 vol.%, indicating that the B-CEM had almost two-thirds of the permselectivity of a commercial CEM (CMX: ASTOM Corp. Japan). The dynamic transport number and membrane resistance of a B-CEM with CCEG = 8.3 mol% and CGA = 0.10 vol.% were 0.99 and 1.6 Ωcm2, respectively. The B-CEM showed higher dynamic transport numbers than those of the R-CEMs with similar membrane resistances.
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Affiliation(s)
- Yuriko Kakihana
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University, 2-16-1 Tokiwadai, Ube Yamaguchi 755-8611, Japan; (Y.K.); (T.M.); (M.A.)
- Blue Energy Center for SGE Technology (BEST), 2-16-1 Tokiwadai, Ube City, Yamaguchi 755-8611, Japan
| | - N. Awanis Hashim
- Department of Chemical Engineering, Faculty of Engineering, Universiti Malaya, Kuala Lumpur 50603, Malaysia;
| | - Taiko Mizuno
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University, 2-16-1 Tokiwadai, Ube Yamaguchi 755-8611, Japan; (Y.K.); (T.M.); (M.A.)
| | - Marika Anno
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University, 2-16-1 Tokiwadai, Ube Yamaguchi 755-8611, Japan; (Y.K.); (T.M.); (M.A.)
| | - Mitsuru Higa
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University, 2-16-1 Tokiwadai, Ube Yamaguchi 755-8611, Japan; (Y.K.); (T.M.); (M.A.)
- Blue Energy Center for SGE Technology (BEST), 2-16-1 Tokiwadai, Ube City, Yamaguchi 755-8611, Japan
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12
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Park TW, Kang YL, Lee SH, No GW, Park ES, Park C, Lee J, Park WI. Formation of Li 2CO 3 Nanostructures for Lithium-Ion Battery Anode Application by Nanotransfer Printing. MATERIALS (BASEL, SWITZERLAND) 2021; 14:1585. [PMID: 33805043 PMCID: PMC8036371 DOI: 10.3390/ma14071585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Revised: 03/19/2021] [Accepted: 03/23/2021] [Indexed: 11/17/2022]
Abstract
Various high-performance anode and cathode materials, such as lithium carbonate, lithium titanate, cobalt oxides, silicon, graphite, germanium, and tin, have been widely investigated in an effort to enhance the energy density storage properties of lithium-ion batteries (LIBs). However, the structural manipulation of anode materials to improve the battery performance remains a challenging issue. In LIBs, optimization of the anode material is a key technology affecting not only the power density but also the lifetime of the device. Here, we introduce a novel method by which to obtain nanostructures for LIB anode application on various surfaces via nanotransfer printing (nTP) process. We used a spark plasma sintering (SPS) process to fabricate a sputter target made of Li2CO3, which is used as an anode material for LIBs. Using the nTP process, various Li2CO3 nanoscale patterns, such as line, wave, and dot patterns on a SiO2/Si substrate, were successfully obtained. Furthermore, we show highly ordered Li2CO3 nanostructures on a variety of substrates, such as Al, Al2O3, flexible PET, and 2-Hydroxylethyl Methacrylate (HEMA) contact lens substrates. It is expected that the approach demonstrated here can provide new pathway to generate many other designable structures of various LIB anode materials.
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Affiliation(s)
- Tae Wan Park
- Electronic Convergence Materials Division, Korea Institute of Ceramic Engineering & Technology (KICET), Jinju 52851, Korea;
| | - Young Lim Kang
- Department of Materials Science and Engineering, Pukyong National University (PKNU), Busan 48513, Korea; (Y.L.K.); (S.H.L.); (C.P.)
| | - Sang Hyeon Lee
- Department of Materials Science and Engineering, Pukyong National University (PKNU), Busan 48513, Korea; (Y.L.K.); (S.H.L.); (C.P.)
| | - Gu Won No
- Research and Development Center, Eloi Materials Lab (EML) Co. Ltd., Suwon 16229, Korea; (G.W.N.); (E.-S.P.)
| | - Eun-Soo Park
- Research and Development Center, Eloi Materials Lab (EML) Co. Ltd., Suwon 16229, Korea; (G.W.N.); (E.-S.P.)
| | - Chan Park
- Department of Materials Science and Engineering, Pukyong National University (PKNU), Busan 48513, Korea; (Y.L.K.); (S.H.L.); (C.P.)
| | - Junghoon Lee
- Department of Metallurgical Engineering, Pukyong National University (PKNU), Busan 48513, Korea
| | - Woon Ik Park
- Department of Materials Science and Engineering, Pukyong National University (PKNU), Busan 48513, Korea; (Y.L.K.); (S.H.L.); (C.P.)
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Synthesis of vinyl polymers substituted with 2-propanol and acetone and investigation of their reversible hydrogen storage capabilities. Polym J 2021. [DOI: 10.1038/s41428-021-00475-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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14
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Stenina IA, Yaroslavtsev AB. Ionic Mobility in Ion-Exchange Membranes. MEMBRANES 2021; 11:198. [PMID: 33799886 PMCID: PMC7998860 DOI: 10.3390/membranes11030198] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 03/05/2021] [Accepted: 03/06/2021] [Indexed: 11/17/2022]
Abstract
Membrane technologies are widely demanded in a number of modern industries. Ion-exchange membranes are one of the most widespread and demanded types of membranes. Their main task is the selective transfer of certain ions and prevention of transfer of other ions or molecules, and the most important characteristics are ionic conductivity and selectivity of transfer processes. Both parameters are determined by ionic and molecular mobility in membranes. To study this mobility, the main techniques used are nuclear magnetic resonance and impedance spectroscopy. In this comprehensive review, mechanisms of transfer processes in various ion-exchange membranes, including homogeneous, heterogeneous, and hybrid ones, are discussed. Correlations of structures of ion-exchange membranes and their hydration with ion transport mechanisms are also reviewed. The features of proton transfer, which plays a decisive role in the membrane used in fuel cells and electrolyzers, are highlighted. These devices largely determine development of hydrogen energy in the modern world. The features of ion transfer in heterogeneous and hybrid membranes with inorganic nanoparticles are also discussed.
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Affiliation(s)
| | - Andrey B. Yaroslavtsev
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Leninsky pr. 31, 119991 Moscow, Russia;
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15
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Catalytic Activity of Beta-Cyclodextrin-Gold Nanoparticles Network in Hydrogen Evolution Reaction. Catalysts 2021. [DOI: 10.3390/catal11010118] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The current climate crisis warrants investigation into alternative fuel sources. The hydrolysis reaction of an aqueous hydride precursor, and the subsequent production of hydrogen gas, prove to be a viable option. A network of beta-cyclodextrin capped gold nanoparticles (BCD-AuNP) was synthesized and subsequently characterized by Powder X-Ray Diffraction (P-XRD), Fourier Transform Infrared (FTIR), Transmission Electron Microscopy (TEM), and Ultraviolet-Visible Spectroscopy (UV-VIS) to confirm the presence of gold nanoparticles as well as their size of approximately 8 nm. The catalytic activity of the nanoparticles was tested in the hydrolysis reaction of sodium borohydride. The gold catalyst performed best at 303 K producing 1.377 mL min−1 mLcat−1 of hydrogen. The activation energy of the catalyst was calculated to be 54.7 kJ/mol. The catalyst resisted degradation in reusability trials, continuing to produce hydrogen gas in up to five trials.
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