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Zavorotnaya UM, Ponomarev II, Volkova YA, Sinitsyn VV. Development of High-Performance Hydrogen-Air Fuel Cell with Flourine-Free Sulfonated Co-Polynaphthoyleneimide Membrane. MEMBRANES 2023; 13:membranes13050485. [PMID: 37233546 DOI: 10.3390/membranes13050485] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 04/19/2023] [Accepted: 04/28/2023] [Indexed: 05/27/2023]
Abstract
This paper presents research on the technological development of hydrogen-air fuel cells with high output power characteristics using fluorine-free co-polynaphtoyleneimide (co-PNIS) membranes. It is found that the optimal operating temperature of a fuel cell based on a co-PNIS membrane with the hydrophilic/hydrophobic blocks = 70/30 composition is in the range of 60-65 °C. The maximum output power of a membrane-electrode assembly (MEA), created according to the developed technology, is 535 mW/cm2, and the working power (at the cell voltage of 0.6 V) is 415 mW/cm2. A comparison with similar characteristics of MEAs based on a commercial Nafion 212 membrane shows that the values of operating performance are almost the same, and the maximum MEA output power of a fluorine-free membrane is only ~20% lower. It was concluded that the developed technology allows one to create competitive fuel cells based on a fluorine-free, cost-effective co-polynaphthoyleneimide membrane.
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Affiliation(s)
- Ulyana M Zavorotnaya
- A.M. Prokhorov Institute of General Physics RAS, Scientific Center of Materials and Technologies, Vavilova St. 38, 119991 Moscow, Russia
- Physics Faculty, National Research University High School of Economics, Myasnitskaya 20, 101000 Moscow, Russia
| | - Igor I Ponomarev
- A.N. Nesmeyanov Institute of Organoelement Compounds, Vavilova St. 28, GSP-1, 119991 Moscow, Russia
| | - Yulia A Volkova
- A.N. Nesmeyanov Institute of Organoelement Compounds, Vavilova St. 28, GSP-1, 119991 Moscow, Russia
| | - Vitaly V Sinitsyn
- Physics Faculty, National Research University High School of Economics, Myasnitskaya 20, 101000 Moscow, Russia
- Institute of Solid State Physics RAS, 2 Academician Ossipyan Str., 142432 Chernogolovka, Russia
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Zhang T, Pan Z, Wang J, Qian X, Yamashita H, Bian Z, Zhao Y. Homogeneous Carbon Dot-Anchored Fe(III) Catalysts with Self-Regulated Proton Transfer for Recyclable Fenton Chemistry. JACS AU 2023; 3:516-525. [PMID: 36873695 PMCID: PMC9975837 DOI: 10.1021/jacsau.2c00644] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 12/15/2022] [Accepted: 12/27/2022] [Indexed: 05/19/2023]
Abstract
Fenton chemistry has been widely studied in a broad range from geochemistry, chemical oxidation to tumor chemodynamic therapy. It was well established that Fe3+/H2O2 resulted in a sluggish initial rate or even inactivity. Herein, we report the homogeneous carbon dot-anchored Fe(III) catalysts (CD-COOFeIII) wherein CD-COOFeIII active center activates H2O2 to produce hydroxyl radicals (•OH) reaching 105 times larger than that of the Fe3+/H2O2 system. The key is the •OH flux produced from the O-O bond reductive cleavage boosting by the high electron-transfer rate constants of CD defects and its self-regulated proton-transfer behavior probed by operando ATR-FTIR spectroscopy in D2O and kinetic isotope effects, respectively. Organic molecules interact with CD-COOFeIII via hydrogen bonds, promoting the electron-transfer rate constants during the redox reaction of CD defects. The antibiotics removal efficiency in the CD-COOFeIII/H2O2 system is at least 51 times large than the Fe3+/H2O2 system under equivalent conditions. Our findings provide a new pathway for traditional Fenton chemistry.
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Affiliation(s)
- Ting Zhang
- School
of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai200240, China
| | - Zhelun Pan
- School
of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai200240, China
| | - Jianying Wang
- School
of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai200240, China
| | - Xufang Qian
- School
of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai200240, China
| | - Hiromi Yamashita
- Division
of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita565-0871, Osaka, Japan
| | - Zhenfeng Bian
- The
Education Ministry Key Lab. of Resource Chemistry, Shanghai Key Laboratory
of Rare Earth Functional Materials, Shanghai
Normal University, 100
Guilin Road, Shanghai200234, China
| | - Yixin Zhao
- School
of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai200240, China
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Park GC, Kim D. Porous PTFE reinforced SPEEK proton exchange membranes for enhanced mechanical, dimensional, and electrochemical stability. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.123506] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Long Z, Miyake J, Miyatake K. Sulfonated Poly(arylene perfluoroalkylene) Terpolymers as Novel Proton Exchange Membranes for High Performance Fuel Cells. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2020. [DOI: 10.1246/bcsj.20190351] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Zhi Long
- Interdisciplinary Graduate School of Medicine, Engineering, and Agricultural Sciences, University of Yamanashi, 4 Takeda, Kofu, Yamanashi 400-8510, Japan
| | - Junpei Miyake
- Clean Energy Research Center, University of Yamanashi, 4 Takeda, Kofu, Yamanashi 400-8510, Japan
| | - Kenji Miyatake
- Clean Energy Research Center, University of Yamanashi, 4 Takeda, Kofu, Yamanashi 400-8510, Japan
- Fuel Cell Nanomaterials Center, University of Yamanashi, 6-43 Miyamae, Kofu, Yamanashi 400-0021, Japan
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Tsuneda T, Singh RK, Iiyama A, Miyatake K. Theoretical Investigation of the H 2O 2-Induced Degradation Mechanism of Hydrated Nafion Membrane via Ether-Linkage Dissociation. ACS OMEGA 2017; 2:4053-4064. [PMID: 31457706 PMCID: PMC6641634 DOI: 10.1021/acsomega.7b00594] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Accepted: 07/18/2017] [Indexed: 06/10/2023]
Abstract
A H2O2-induced degradation mechanism is presented for the hydrated Nafion membrane proceeding through the dissociation of the ether linkages of the side chains. Although the durability of proton-exchange membrane fuel cells clearly depends on the degradation rate of the membrane, typically Nafion, the degradation mechanism still has not been resolved. It has often been assumed that the principal mode of degradation involves OH• radicals; in contrast, we show here that a H2O2-induced degradation mechanism is more likely. On the basis of state-of-the-art theoretical calculations and detailed comparison with experimental results, we present such a mechanism for the hydrated Nafion membrane, proceeding through the dissociation of the ether linkage of the side chains, with a relatively low activation energy. In this mechanism, (H2O)λHO3S-CF2-CF2-O-O-H (λ is the hydration number) is obtained as a key degradation fragment. Possible subsequent decomposition-reaction mechanisms are also elucidated for this fragment. The calculated vibrational spectra for the intermediates and products proposed in these mechanisms were found to be consistent with the experimental IR spectra. Further consideration of this H2O2-mediated degradation mechanism could greatly facilitate the search for ways to combat membrane degradation.
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Modeling and simulation of membrane process. PHYSICAL SCIENCES REVIEWS 2017. [DOI: 10.1515/psr-2017-0023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractThe article presents the different approaches to polymer membrane mathematical modeling. Traditional models based on experimental physicochemical correlations and balance models are presented in the first part. Quantum and molecular mechanics models are presented as they are more popular for polymer membranes in fuel cells. The initial part is enclosed by neural network models which found their use for different types of processes in polymer membranes. The second part is devoted to models of fluid dynamics. The computational fluid dynamics technique can be divided into solving of Navier-Stokes equations and into Boltzmann lattice models. Both approaches are presented focusing on membrane processes.
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Zhao YY, Tsuchida E, Choe YK, Wang J, Ikeshoji T, Ohira A. Theoretical studies on the degradation of hydrocarbon copolymer ionomers used in fuel cells. J Memb Sci 2015. [DOI: 10.1016/j.memsci.2015.04.005] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Feng M, Qu R, Wei Z, Wang L, Sun P, Wang Z. Characterization of the thermolysis products of Nafion membrane: A potential source of perfluorinated compounds in the environment. Sci Rep 2015; 5:9859. [PMID: 25947254 PMCID: PMC5386195 DOI: 10.1038/srep09859] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Accepted: 03/24/2015] [Indexed: 12/03/2022] Open
Abstract
The thermal decomposition of Nafion N117 membrane, a typical perfluorosulfonic acid membrane that is widely used in various chemical technologies, was investigated in this study. Structural identification of thermolysis products in water and methanol was performed using liquid chromatography-electrospray ionization-tandem mass spectrometry (LC/ESI-MS/MS). The fluoride release was studied using an ion-chromatography system, and the membrane thermal stability was characterized by thermogravimetric analysis. Notably, several types of perfluorinated compounds (PFCs) including perfluorocarboxylic acids were detected and identified. Based on these data, a thermolysis mechanism was proposed involving cleavage of both the polymer backbone and its side chains by attack of radical species. This is the first systematic report on the thermolysis products of Nafion by simulating its high-temperature operation and disposal process via incineration. The results of this study indicate that Nafion is a potential environmental source of PFCs, which have attracted growing interest and concern in recent years. Additionally, this study provides an analytical justification of the LC/ESI-MS/MS method for characterizing the degradation products of polymer electrolyte membranes. These identifications can substantially facilitate an understanding of their decomposition mechanisms and offer insight into the proper utilization and effective management on these membranes.
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Affiliation(s)
- Mingbao Feng
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, P. R. China
| | - Ruijuan Qu
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, P. R. China
| | - Zhongbo Wei
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, P. R. China
| | - Liansheng Wang
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, P. R. China
| | - Ping Sun
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, P. R. China
| | - Zunyao Wang
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, P. R. China
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Ghelichi M, Melchy PÉA, Eikerling MH. Radically Coarse-Grained Approach to the Modeling of Chemical Degradation in Fuel Cell Ionomers. J Phys Chem B 2014; 118:11375-86. [DOI: 10.1021/jp506333p] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Mahdi Ghelichi
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, BC V5A
1S6, Canada
| | - Pierre-Éric Alix Melchy
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, BC V5A
1S6, Canada
| | - Michael H. Eikerling
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, BC V5A
1S6, Canada
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Ghassemzadeh L, Peckham TJ, Weissbach T, Luo X, Holdcroft S. Selective formation of hydrogen and hydroxyl radicals by electron beam irradiation and their reactivity with perfluorosulfonated acid ionomer. J Am Chem Soc 2013; 135:15923-32. [PMID: 24074044 DOI: 10.1021/ja408032p] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Selective formation and reactivity of hydrogen (H(•)) and hydroxyl (HO(•)) radicals with perfluorinated sulfonated ionomer membrane, Nafion 211, is described. Selective formation of radicals was achieved by electron beam irradiation of aqueous solutions of H2O2 or H2SO4 to form HO(•) and H(•), respectively, and confirmed by ESR spectroscopy using a spin trap. The structure of Nafion 211 after reaction with H(•) or HO(•) was determined using calibrated (19)F magic angle spinning NMR spectroscopy. Soluble residues of degradation were analyzed by liquid and solid-state NMR. NMR and ATR-FTIR spectroscopy, together with determination of ion exchange capacity, water uptake, proton conductivity, and fluoride ion release, strongly indicate that attack by H(•) occurs at the tertiary carbon C-F bond on both the main and side chain; whereas attack by HO(•) occurs solely on the side chain, specifically, the α-O-C bond.
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Affiliation(s)
- Lida Ghassemzadeh
- Department of Chemistry, Simon Fraser University , 8888 University Drive, Burnaby, British Columbia, Canada V5A 1S6
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