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Muhammad S, Walsh DA. Electrochemistry of ethanol and dimethyl ether at a Pt electrode in a protic ionic liquid: the electrode poisoning mechanism. Phys Chem Chem Phys 2023; 25:21509-21520. [PMID: 37540208 DOI: 10.1039/d3cp02645k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/05/2023]
Abstract
A protic ionic liquid (PIL), N,N-diethyl-N-methyl ammonium trifluoromethane sulfonate, [dema][TfO] was synthesized and confirmed using 1H-NMR and ion chromatography (IC). The surface electrocatalysis of ethanol (EtOH) and dimethyl ether (DME) was investigated on a polycrystalline Pt electrode in a PIL using a cyclic voltammetry technique. The voltammetry response shows that surface Pt-oxides/hydroxides (PtOH/PtO) are formed due to the oxidation of trace water (240 ppm determined by coulometric Karl-Fischer (FT) titration) in [dema][TfO] which plays a pivotal role during the electrocatalytic oxidation of EtOH and DME in the PIL. Oxidation of EtOH and DME coincides with coverage of the Pt surface by the adsorbed oxide species that helps to activate both processes by oxidizing the adsorbed poisoning CO and CO-like intermediate species via a 'bifunctional' reaction mechanism. The influence of temperature was investigated to obtain quantitative and qualitative information on the kinetics of EtOH oxidation. Higher activation energies are measured for EtOH oxidation in [dema][TfO] than in aqueous electrolytes due to the low water content and high viscosity of the PIL. This study gave a basic insight into the mechanism of EtOH and DME oxidation reactions, and the Pt-electrode poisoning species formation mechanism in the neoteric electrolyte medium is electrochemically investigated and reported.
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Affiliation(s)
- Sayyar Muhammad
- School of Chemistry, GSK Carbon Neutral Laboratory for Sustainable Chemistry University of Nottingham, NG7 2TU, Nottingham, UK.
- Department of Chemistry, Islamia College Peshawar, Peshawar 25120, Pakistan
| | - Darren Anthony Walsh
- School of Chemistry, GSK Carbon Neutral Laboratory for Sustainable Chemistry University of Nottingham, NG7 2TU, Nottingham, UK.
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2
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Huo J, Cao X, Tian Y, Li L, Qu J, Xie Y, Nie X, Zhao Y, Zhang J, Liu H. Atomically dispersed Mn atoms coordinated with N and O within an N-doped porous carbon framework for boosted oxygen reduction catalysis. NANOSCALE 2023; 15:5448-5457. [PMID: 36852590 DOI: 10.1039/d2nr06096e] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Developing efficient and robust catalysts to replace Pt group metals for the oxygen reduction reaction (ORR) is conducive to achieving highly efficient energy conversion. Here, we develop a general ion exchange strategy to construct highly efficient ORR catalysts consisting of various atomically dispersed metal atoms anchored on N-doped porous carbon (M-SAs/NC) to investigate the atomic structure-catalytic activity relationship. The structure characterization results demonstrated that the achieved atomic structure varied due to the presence of different metal centers. Mn-SAs/NC consists of MnN3O1 centers, in which the Mn single atoms are stabilized by 3 N and 1 O. In contrast, the center metals in Fe-/Co-/Cu single-atom catalysts are coordinated by merely N atoms. Mn-SAs/NC delivers superior performance for the ORR with a half-wave potential (E1/2) of 0.91 V vs. RHE in 0.1 M KOH solution, outperforming that of the commercial Pt/C catalyst and the control Fe-/Co-/Cu single-atom catalysts. Furthermore, Mn-SAs/NC also shows excellent methanol tolerance and stability up to 5000 cycles. Density functional theory (DFT) calculations reveal that Mn single atom catalysts with MnN3O1 centers contributed to the superior ORR performance with lower energy barriers and optimized adsorption capacity of intermediates. These findings provide insights into the design and development of specific coordinated structures of atomically dispersed catalysts to facilitate the practical applications of energy conversion.
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Affiliation(s)
- Juanjuan Huo
- Institute of Energy Materials Science, University of Shanghai for Science and Technology, Shanghai 200093, China
- Joint International Laboratory on Environmental and Energy Frontier Materials, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China.
| | - Xianjun Cao
- Joint International Laboratory on Environmental and Energy Frontier Materials, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China.
| | - Yaping Tian
- KeWen College, JiangSu Normal University, XuZhou, Jiangsu 221000, China
| | - Lu Li
- Joint International Laboratory on Environmental and Energy Frontier Materials, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China.
| | - Junpeng Qu
- Joint International Laboratory on Environmental and Energy Frontier Materials, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China.
| | - Yuhan Xie
- Centre for Clean Energy Technology, School of Mathematical and Physical Sciences, Faculty of Science, University of Technology Sydney, Broadway, Sydney, NSW 2007, Australia.
| | - Xinming Nie
- School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou, Jiangsu 221116, China.
| | - Yufei Zhao
- Joint International Laboratory on Environmental and Energy Frontier Materials, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China.
| | - Jinqiang Zhang
- Department of Electrical and Computer Engineering, University of Toronto, 35 St George Street, Toronto, Ontario, M5S 1A4, Canada.
| | - Hao Liu
- State Key Laboratory of Advanced Special Steel, Shanghai Key Laboratory of Advanced Ferrometallurgy, Shanghai University, Shanghai 200444, China
- Centre for Clean Energy Technology, School of Mathematical and Physical Sciences, Faculty of Science, University of Technology Sydney, Broadway, Sydney, NSW 2007, Australia.
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3
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Szwabińska K, Lota G. Tuning the course of the oxygen reduction reaction at a carbon electrode using alkaline electrolytes based on binary DMSO–water solvent mixtures. Electrochem commun 2022. [DOI: 10.1016/j.elecom.2022.107359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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4
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Facile fabrication of GCE/Nafion/Ni composite, a robust platform to detect hydrogen peroxide in basic medium via oxidation reaction. Talanta 2022; 240:123202. [PMID: 34998141 DOI: 10.1016/j.talanta.2021.123202] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 11/03/2021] [Accepted: 12/30/2021] [Indexed: 12/29/2022]
Abstract
Nickel particles alone can oxidize hydrogen peroxide but confronts extreme stability problem which imparts a barrier to act as sensor. The porous Nafion bed on glassy carbon electrode (GCE) surface provides the sureness of incorporating of Ni particles which was further exploited as an electrochemical sensor for H2O2 detection through oxidative degradation process. The simple electrochemical incorporation of Ni particles along the pores of Nafion improves the stability of the sensor significantly. The oxidative pathway of hydrogen peroxide on GCE/Nafion/Ni was probed by analyzing mass transfer dependent linear sweep voltammograms both in static and rotating modes along with chronoamperometry. An electron transfer step determines the overall reaction rate with k°= 2.72 × 10-4 cm s-1, which is supported by the values of transfer coefficient (β) in between (0.68-0.75). Sensing performance was evaluated by recording differential pulse voltammograms (DPVs) with the linear detection limit (LOD) of 1.8 μM and linear dynamic range (LDR) of 5-500 μM. Real samples from industrial sources were successfully quantified with excellent reproducibility mark GCE/Nafion/Ni electrode as an applicable sensor.
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The Structure of the Electric Double Layer of the Protic Ionic Liquid [Dema][TfO] Analyzed by Atomic Force Spectroscopy. Int J Mol Sci 2021; 22:ijms222312653. [PMID: 34884462 PMCID: PMC8658030 DOI: 10.3390/ijms222312653] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 11/17/2021] [Accepted: 11/18/2021] [Indexed: 12/05/2022] Open
Abstract
Protic ionic liquids are promising electrolytes for fuel cell applications. They would allow for an increase in operation temperatures to more than 100 °C, facilitating water and heat management and, thus, increasing overall efficiency. As ionic liquids consist of bulky charged molecules, the structure of the electric double layer significantly differs from that of aqueous electrolytes. In order to elucidate the nanoscale structure of the electrolyte–electrode interface, we employ atomic force spectroscopy, in conjunction with theoretical modeling using molecular dynamics. Investigations of the low-acidic protic ionic liquid diethylmethylammonium triflate, in contact with a platinum (100) single crystal, reveal a layered structure consisting of alternating anion and cation layers at the interface, as already described for aprotic ionic liquids. The structured double layer depends on the applied electrode potential and extends several nanometers into the liquid, whereby the stiffness decreases with increasing distance from the interface. The presence of water distorts the layering, which, in turn, significantly changes the system’s electrochemical performance. Our results indicate that for low-acidic ionic liquids, a careful adjustment of the water content is needed in order to enhance the proton transport to and from the catalytic electrode.
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Hou H, Schütz HM, Giffin J, Wippermann K, Gao X, Mariani A, Passerini S, Korte C. Acidic Ionic Liquids Enabling Intermediate Temperature Operation Fuel Cells. ACS APPLIED MATERIALS & INTERFACES 2021; 13:8370-8382. [PMID: 33573380 DOI: 10.1021/acsami.0c20679] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Herein we show that protic ionic liquids (PILs) are promising electrolytes for fuel cells operating in the temperature range 100-120 °C. N,N-Diethyl-N-methyl-3-sulfopropan-1-ammonium hydrogen sulfate ([DEMSPA][HSA]), N,N-diethyl-N-methyl-3-sulfopropan-1-ammonium triflate ([DEMSPA][TfO]), N,N-diethyl-3-sulfopropan-1-ammonium hydrogen sulfate ([DESPA][HSA]), and N,N-diethyl-3-sulfopropan-1-ammonium triflate ([DESPA][TfO]) are investigated in this study with regard to their specific conductivity, thermal stability, viscosity, and electrochemical properties. The [DEMSPA][TfO] and [DESPA][TfO] electrolytes offer high limiting current densities for the oxygen reduction reaction (ORR) on platinum electrodes, that is, about 1 order of magnitude larger than 98% H3PO4. This is explained by the minor poisoning of the Pt catalyst and the significantly larger product of the oxygen self-diffusion coefficient and concentration in these two PILs.
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Affiliation(s)
- Hui Hou
- Institute of Energy and Climate Research, Electrochemical Process Engineering (IEK-14), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
- Institute of Physical Chemistry, RWTH Aachen University, Aachen, Germany
| | - Hanno Maria Schütz
- Helmholtz Institute Ulm (HIU), Helmholtzstrasse 11, 89081 Ulm, Germany
- Karlsruhe Institute of Technology (KIT), P.O. Box 3640, 76021 Karlsruhe, Germany
| | - Jürgen Giffin
- Institute of Energy and Climate Research, Electrochemical Process Engineering (IEK-14), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - Klaus Wippermann
- Institute of Energy and Climate Research, Electrochemical Process Engineering (IEK-14), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - Xinpei Gao
- Helmholtz Institute Ulm (HIU), Helmholtzstrasse 11, 89081 Ulm, Germany
- Karlsruhe Institute of Technology (KIT), P.O. Box 3640, 76021 Karlsruhe, Germany
| | - Alessandro Mariani
- Helmholtz Institute Ulm (HIU), Helmholtzstrasse 11, 89081 Ulm, Germany
- Karlsruhe Institute of Technology (KIT), P.O. Box 3640, 76021 Karlsruhe, Germany
| | - Stefano Passerini
- Helmholtz Institute Ulm (HIU), Helmholtzstrasse 11, 89081 Ulm, Germany
- Karlsruhe Institute of Technology (KIT), P.O. Box 3640, 76021 Karlsruhe, Germany
| | - Carsten Korte
- Institute of Energy and Climate Research, Electrochemical Process Engineering (IEK-14), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
- Institute of Physical Chemistry, RWTH Aachen University, Aachen, Germany
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7
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Chen W, Xiang Q, Peng T, Song C, Shang W, Deng T, Wu J. Reconsidering the Benchmarking Evaluation of Catalytic Activity in Oxygen Reduction Reaction. iScience 2020; 23:101532. [PMID: 33083712 PMCID: PMC7516295 DOI: 10.1016/j.isci.2020.101532] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
The sluggish kinetics of the oxygen reduction reaction (ORR) on electrocatalysts represents a major obstacle in the development of fuel cell technology. A tremendous amount of work has reported the increasing ORR activity for catalysts. Nevertheless, when applied to practical Membrane Electrode Assembly (MEA, an assembled stack of a proton exchange membrane fuel cell) configuration, the high-performance catalysts on the rotating disk electrode (RDE) may not display the same high activity as in the lab-scale tests. This led us to reexamine the ORR evaluation based on the RDE technique. With the development of high active electrocatalysts, it may become significant to determine the reasonable kinetic current at a conventional fixed potential approaching the limited current by using the Koutecky-Levich (K-L) technique on RDE for the evaluation of ORR activity. Here we describe such a challenging situation and systematically discuss the proper kinetic region when comparing the ORR activity with the unsuitable potential or Pt loading based on the K-L technique. Furthermore, the rational benchmarking guidelines are given for the evaluation of the ORR electrocatalysts.
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Affiliation(s)
- Wenlong Chen
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, 200240 Shanghai, China
| | - Qian Xiang
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, 200240 Shanghai, China
| | - Tao Peng
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, 200240 Shanghai, China
| | - Chengyi Song
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, 200240 Shanghai, China
| | - Wen Shang
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, 200240 Shanghai, China
| | - Tao Deng
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, 200240 Shanghai, China.,Center of Hydrogen Science, Shanghai Jiao Tong University, 200240 Shanghai, China
| | - Jianbo Wu
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, 200240 Shanghai, China.,Center of Hydrogen Science, Shanghai Jiao Tong University, 200240 Shanghai, China
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8
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Wang J, Li M, Zhang J, Yan Y, Qiu X, Cai B, Yang G, Tang Y. Atom‐Ratio‐Conducted Tailoring of PdAu Bimetallic Nanocrystals with Distinctive Shapes and Dimensions for Boosting the ORR Performance. Chemistry 2020; 26:4480-4488. [DOI: 10.1002/chem.201905284] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 12/29/2019] [Indexed: 11/07/2022]
Affiliation(s)
- Jingchun Wang
- Jiangsu Key Laboratory of New Power BatteriesJiangsu Collaborative Innovation Center of, Biomedical Functional Materials School of Chemistry and Materials ScienceNanjing Normal University Nanjing 210023 P. R. China
| | - Meng Li
- Jiangsu Key Laboratory of New Power BatteriesJiangsu Collaborative Innovation Center of, Biomedical Functional Materials School of Chemistry and Materials ScienceNanjing Normal University Nanjing 210023 P. R. China
| | - Jingzi Zhang
- Jiangsu Key Laboratory of New Power BatteriesJiangsu Collaborative Innovation Center of, Biomedical Functional Materials School of Chemistry and Materials ScienceNanjing Normal University Nanjing 210023 P. R. China
| | - Yawei Yan
- Jiangsu Key Laboratory of New Power BatteriesJiangsu Collaborative Innovation Center of, Biomedical Functional Materials School of Chemistry and Materials ScienceNanjing Normal University Nanjing 210023 P. R. China
| | - Xiaoyu Qiu
- Jiangsu Key Laboratory of New Power BatteriesJiangsu Collaborative Innovation Center of, Biomedical Functional Materials School of Chemistry and Materials ScienceNanjing Normal University Nanjing 210023 P. R. China
| | - Bingfeng Cai
- Jiangsu Key Laboratory of New Power BatteriesJiangsu Collaborative Innovation Center of, Biomedical Functional Materials School of Chemistry and Materials ScienceNanjing Normal University Nanjing 210023 P. R. China
| | - Gaixiu Yang
- Guangzhou Institute of Energy ConversionChinese Academy of SciencesCAS Key Laboratory of Renewable EnergyGuangdong Provincial Key Laboratory of New and Renewable Energy Research and Development Guangzhou 510640 P. R. China
| | - Yawen Tang
- Jiangsu Key Laboratory of New Power BatteriesJiangsu Collaborative Innovation Center of, Biomedical Functional Materials School of Chemistry and Materials ScienceNanjing Normal University Nanjing 210023 P. R. China
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9
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Electrochemical reduction mechanism of NbF5 and NbCl5 in the ionic liquid 1-butyl-1-methylpyrrolidinium trifluoromethanesulfonate. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.134600] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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10
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PUTHEN PEEDIYAKKAL H, YU J, MUNAKATA H, KANAMURA K. Highly Durable Non-Platinum Catalyst for Protic Ionic Liquid Based Intermediate Temperature PEFCs. ELECTROCHEMISTRY 2019. [DOI: 10.5796/electrochemistry.18-00064] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Hasna PUTHEN PEEDIYAKKAL
- Department of Applied Chemistry for Environment, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University
| | - Jie YU
- Department of Applied Chemistry for Environment, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University
| | - Hirokazu MUNAKATA
- Department of Applied Chemistry for Environment, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University
| | - Kiyoshi KANAMURA
- Department of Applied Chemistry for Environment, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University
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11
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Wippermann K, Giffin J, Kuhri S, Lehnert W, Korte C. The influence of water content in a proton-conducting ionic liquid on the double layer properties of the Pt/PIL interface. Phys Chem Chem Phys 2017; 19:24706-24723. [PMID: 28861561 DOI: 10.1039/c7cp04003b] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The influence of the water content of 2-sulfoethylmethylammonium trifluoromethanesulfonate [2-Sema][TfO] on the double layer properties of the interface of platinum and the proton conducting ionic liquid (PIL) is investigated by means of impedance spectroscopy and cyclic voltammetry. By fitting the impedance spectra as complex capacitances, up to four differential double layer capacitances and corresponding time constants are obtained, depending on the potential (U = 0-1.6 V/RHE), water content (0.7-6.1 wt%) and temperature (T = 70-110 °C). Within the whole potential range investigated, a high frequency capacitance, C1, and a low frequency capacitance, C2, can be calculated. In the potential region of hydrogen underpotential deposition (HUPD), C1 can be separated into two parts, C1a and C1b. Whereas the high frequency capacitive processes can mainly be attributed to ion transport processes in the double layer, the low frequency process is ascribed to changes in the interfacial layer, including ad-/desorption and Faradaic processes. Alternative interpretations regarding the reorientation of ions, reconstruction of the metal surface and partial electron transfer between anions and Pt are considered.
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Affiliation(s)
- K Wippermann
- Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research - Fuel Cells (IEK-3), 52425 Jülich, Germany.
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12
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Goodwin SE, Smith DE, Gibson JS, Jones RG, Walsh DA. Electroanalysis of Neutral Precursors in Protic Ionic Liquids and Synthesis of High-Ionicity Ionic Liquids. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:8436-8446. [PMID: 28780867 DOI: 10.1021/acs.langmuir.7b02294] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Protic ionic liquids (PILs) are ionic liquids that are formed by transferring protons from Brønsted acids to Brønsted bases. While they nominally consist entirely of ions, PILs can often behave as though they contain a significant amount of neutral species (either molecules or ion clusters), and there is currently a lot of interest in determining the degree of "ionicity" of PILs. In this contribution, we describe a simple electroanalytical method for detecting and quantifying residual excess acids in a series of ammonium-based PILs (diethylmethylammonium triflate [dema][TfO], dimethylethylammonium triflate [dmea][TfO], triethylammonium trifluoroacetate [tea][TfAc], and dimethylbutylammonium triflate [dmba][TfO]). Ultra-microelectrode voltammetry reveals that some of the accepted methods for synthesizing PILs can readily result in the formation of nonstoichiometric PILs containing up to 230 mM excess acid. In addition, vacuum purification of PILs is of limited use in cases where nonstoichiometric PILs are formed. Although excess bases can be readily removed from PILs under ambient conditions, excess acids cannot be removed, even under high vacuum. The effects of excess acid on the electrocatalytic oxygen reduction reaction (ORR) in PILs have been studied, and the onset potential of the ORR in [dema][TfO] increases by 0.8 V upon addition of acid to PIL. On the basis of the results of our analyses, we provide some recommendations for the synthesis of highly ionic PILs.
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Affiliation(s)
- Sean E Goodwin
- School of Chemistry and GSK Carbon Neutral Laboratory for Sustainable Chemistry, The University of Nottingham , Jubilee Campus, Nottingham NG7 2TU, U.K
| | - Daniel E Smith
- School of Chemistry and GSK Carbon Neutral Laboratory for Sustainable Chemistry, The University of Nottingham , Jubilee Campus, Nottingham NG7 2TU, U.K
| | - Joshua S Gibson
- Department of Physical Chemistry, School of Chemistry, The University of Nottingham , University Park, Nottingham NG7 2RD, U.K
| | - Robert G Jones
- Department of Physical Chemistry, School of Chemistry, The University of Nottingham , University Park, Nottingham NG7 2RD, U.K
| | - Darren A Walsh
- School of Chemistry and GSK Carbon Neutral Laboratory for Sustainable Chemistry, The University of Nottingham , Jubilee Campus, Nottingham NG7 2TU, U.K
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13
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Ionic Liquid-Based Non-Aqueous Electrolytes for Nickel/Metal Hydride Batteries. BATTERIES-BASEL 2017. [DOI: 10.3390/batteries3010004] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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14
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Gui AL, Endres F, Wittstock G. Influence of Chemical Structure and Temperature on Oxygen Reduction Reaction and Transport in Ionic Liquids. Z PHYS CHEM 2016. [DOI: 10.1515/zpch-2016-0859] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Abstract
The ORR mechanism is studied in the context of metal-air batteries in three ionic liquids, 1-butyl-1-methylpyrrolidinium trifluoromethanesulfonate ([Py1,4]TfO), 1-ethyl-3-methylimidazolium trifluoromethanesulfonate ([EMIm]TfO) and 1-butyl-2,3-dimethylimidazolium bis(trifluoromethylsulfonyl)imide ([BDMIm]Tf2N). An electrochemical scheme combining four electrochemical techniques (CA, CV at macro-disk electrode, linear sweep voltammetry at rotating disk electrode (LSV at RDE) and CV at microelectrode (CV at ME)) is developed to perform fast determination of oxygen parameters (concentration c* and diffusion coefficient D) of electrolyte at various conditions. The electrochemical study has revealed the influence of acidity of ionic liquid to the reversibility of the O2/O2˙− redox reaction. The influence of temperature (up to 100°C) on the mechanism change of ORR as well as the changes of c* and D in three ionic liquids have been examined using the developed electrochemical method. The result has shown that the T-dependency of c* is much less prominent than that of D.
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Affiliation(s)
- Alicia L. Gui
- Carl von Ossietzyk University of Oldenburg , Faculty of Mathematics and Natural Science, Center of Interface Science, Institute of Chemistry , D-26111 Oldenburg , Germany
| | - Frank Endres
- Clausthal University of Technology , Institute of Electrochemistry , Arnold-Sommerfeld-Strasse 6 , 38678 Clausthal-Zellerfeld , Germany
| | - Gunther Wittstock
- Carl von Ossietzyk University of Oldenburg , Faculty of Mathematics and Natural Science, Center of Interface Science, Institute of Chemistry , D-26111 Oldenburg , Germany
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15
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Colic V, Pohl MD, Scieszka D, Bandarenka AS. Influence of the electrolyte composition on the activity and selectivity of electrocatalytic centers. Catal Today 2016. [DOI: 10.1016/j.cattod.2015.08.003] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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16
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Greaves TL, Drummond CJ. Protic Ionic Liquids: Evolving Structure-Property Relationships and Expanding Applications. Chem Rev 2015; 115:11379-448. [PMID: 26426209 DOI: 10.1021/acs.chemrev.5b00158] [Citation(s) in RCA: 498] [Impact Index Per Article: 55.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Tamar L Greaves
- School of Applied Sciences, College of Science, Engineering and Health, RMIT University , GPO Box 2476, Melbourne, Victoria 3001, Australia
| | - Calum J Drummond
- School of Applied Sciences, College of Science, Engineering and Health, RMIT University , GPO Box 2476, Melbourne, Victoria 3001, Australia
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17
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Vainikka T, Figueiredo MC, Kontturi K, Murtomäki L. Studies of oxygen reduction in 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide by microdisk voltammetry. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2014.12.172] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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18
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Savych I, Subianto S, Nabil Y, Cavaliere S, Jones D, Rozière J. Negligible degradation upon in situ voltage cycling of a PEMFC using an electrospun niobium-doped tin oxide supported Pt cathode. Phys Chem Chem Phys 2015; 17:16970-6. [DOI: 10.1039/c5cp01542a] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pt/Nb–SnO2 loose-tubes constitute a mitigation strategy for two known degradation mechanisms in PEMFC: corrosion of the carbon support at the cathode, and dissolution of Pt at high cell voltages.
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Affiliation(s)
- Iuliia Savych
- Institut Charles Gerhardt
- UMR CNRS 5253
- Agrégats Interfaces Matériaux pour l'Energie
- Université de Montpellier
- 34095 Montpellier Cedex 5
| | - Surya Subianto
- Institut Charles Gerhardt
- UMR CNRS 5253
- Agrégats Interfaces Matériaux pour l'Energie
- Université de Montpellier
- 34095 Montpellier Cedex 5
| | - Yannick Nabil
- Institut Charles Gerhardt
- UMR CNRS 5253
- Agrégats Interfaces Matériaux pour l'Energie
- Université de Montpellier
- 34095 Montpellier Cedex 5
| | - Sara Cavaliere
- Institut Charles Gerhardt
- UMR CNRS 5253
- Agrégats Interfaces Matériaux pour l'Energie
- Université de Montpellier
- 34095 Montpellier Cedex 5
| | - Deborah Jones
- Institut Charles Gerhardt
- UMR CNRS 5253
- Agrégats Interfaces Matériaux pour l'Energie
- Université de Montpellier
- 34095 Montpellier Cedex 5
| | - Jacques Rozière
- Institut Charles Gerhardt
- UMR CNRS 5253
- Agrégats Interfaces Matériaux pour l'Energie
- Université de Montpellier
- 34095 Montpellier Cedex 5
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Deng H, Stockmann TJ, Peljo P, Opallo M, Girault HH. Electrochemical oxygen reduction at soft interfaces catalyzed by the transfer of hydrated lithium cations. J Electroanal Chem (Lausanne) 2014. [DOI: 10.1016/j.jelechem.2014.07.040] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Solubility and Diffusion Coefficient of Oxygen in Protic Ionic Liquids with Different Fluoroalkyl Chain Lengths. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2014.03.143] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Affiliation(s)
- Maxim V Fedorov
- Department of Physics, Scottish University Physics Alliance (SUPA), University of Strathclyde , John Anderson Bldg, 107 Rottenrow, Glasgow, G4 0NG United Kingdom
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22
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A correlated nickelate synaptic transistor. Nat Commun 2013; 4:2676. [DOI: 10.1038/ncomms3676] [Citation(s) in RCA: 365] [Impact Index Per Article: 33.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2013] [Accepted: 09/26/2013] [Indexed: 11/09/2022] Open
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Walsh DA, Ejigu A, Muhammad S, Licence P. The Formation and Role of Oxide Layers on Pt during Hydrazine Oxidation in Protic Ionic Liquids. ChemElectroChem 2013. [DOI: 10.1002/celc.201300111] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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