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Kim Y, Min J, Ko K, Sravani B, Chougule SS, Choi Y, Choi H, Hong S, Jung N. Activity Quantification of Fuel Cell Catalysts via Sequential Poisoning by Multiple Reaction Inhibitors. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3800. [PMID: 36364577 PMCID: PMC9657715 DOI: 10.3390/nano12213800] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 10/26/2022] [Accepted: 10/27/2022] [Indexed: 06/16/2023]
Abstract
The development of non-Pt or carbon-based catalysts for anion exchange membrane fuel cells (AEMFCs) requires identification of the active sites of the catalyst. Since not only metals but also carbon materials exhibit oxygen reduction reaction (ORR) activity in alkaline conditions, the contribution of carbon-based materials to ORR performance should also be thoroughly analyzed. However, the conventional CN- poisoning experiments, which are mainly used to explain the main active site of M-N-C catalysts, are limited to only qualitative discussions, having the potential to make fundamental errors. Here, we report a modified electrochemical analysis to quantitatively investigate the contribution of the metal and carbon active sites to ORR currents at a fixed potential by sequentially performing chronoamperometry with two reaction inhibitors, CN- and benzyl trimethylammonium (BTMA+). As a result, we discover how to quantify the individual contributions of two active sites (Pt nanoparticles and carbon support) of carbon-supported Pt (Pt/C) nanoparticles as a model catalyst. This study is expected to provide important clues for the active site analysis of carbon-supported non-Pt catalysts, such as M-N-C catalysts composed of heterogeneous elements.
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2
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Kreider ME, Gunasooriya GTKK, Liu Y, Zamora Zeledón JA, Valle E, Zhou C, Montoya JH, Gallo A, Sinclair R, Nørskov JK, Stevens MB, Jaramillo TF. Strategies for Modulating the Catalytic Activity and Selectivity of Manganese Antimonates for the Oxygen Reduction Reaction. ACS Catal 2022. [DOI: 10.1021/acscatal.2c01764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Melissa E. Kreider
- Department of Chemical Engineering, Stanford University, 443 Via Ortega, Stanford, California 94305, United States
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | | | - Yunzhi Liu
- Department of Materials Science and Engineering, Stanford University, 496 Lomita Mall, Stanford, California 94305, United States
| | - José A. Zamora Zeledón
- Department of Chemical Engineering, Stanford University, 443 Via Ortega, Stanford, California 94305, United States
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Eduardo Valle
- Department of Chemical Engineering, Stanford University, 443 Via Ortega, Stanford, California 94305, United States
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Chengshuang Zhou
- Department of Chemical Engineering, Stanford University, 443 Via Ortega, Stanford, California 94305, United States
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Joseph H. Montoya
- Toyota Research Institute, Los Altos, California 94022, United States
| | - Alessandro Gallo
- Department of Chemical Engineering, Stanford University, 443 Via Ortega, Stanford, California 94305, United States
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Robert Sinclair
- Department of Materials Science and Engineering, Stanford University, 496 Lomita Mall, Stanford, California 94305, United States
| | - Jens K. Nørskov
- Catalysis Theory Center, Department of Physics, Technical University of Denmark, 2800 Kongens, Lyngby, Denmark
| | - Michaela Burke Stevens
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Thomas F. Jaramillo
- Department of Chemical Engineering, Stanford University, 443 Via Ortega, Stanford, California 94305, United States
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
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3
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Green Synthesis of Flowerball-like MoS2/VC Nanocomposite and Its Efficient Catalytic Performance for Oxygen Reduction Either in Alkaline or Acid Media. Catalysts 2022. [DOI: 10.3390/catal12030259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Opening up electrocatalysts for oxygen reduction reaction (ORR) is essential for practical application in fuel cells and metal-air batteries; however, how to make the catalysts with both good performance and low cost is difficult. Recently, research on the ORR of molybdenum disulfide-based catalysts in alkaline electrolytes has been on the rise. However, the development of MoS2 catalyst for acidic ORR is still in its infancy. Herein, without using reductant and morphology control reagent, we firstly obtained flowerball-like MoS2/Vulcan XC-72R (VC) nanocomposites via hydrothermal method. The designed composite exhibits a nearly 4e− ORR process with 0.78 and 0.92 V onset potentials in 0.1 M KOH and HClO4, respectively. Furthermore, the flowerball-like composite shows utmost electrochemical stability judging by 87 and 80% current retention for about 5.5 h either in alkaline or acid media, long term durability for continuous 10,000 cycles, and stronger resistance to methanol than the commercial Pt/C catalyst. The abundant Mo edges as catalytic active centers of flowerball-like structure, high electron conductivity, and enhanced mass transport in either alkaline or acidic electrolyte are favorable for catalytic performance. The prepared catalyst provides great potential for the substitution of noble metal based catalysts in fuel cells and metal-air batteries.
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4
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Naeem R, Afzal S, Mansoor MA, Munawar K, Sherino B, Ahmed R. A composite approach to synthesize a high-performance Pt/WO 3–carbon catalyst for optical and electrocatalytic applications. NEW J CHEM 2022. [DOI: 10.1039/d2nj01497a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Optical and electrocatalytic activity of the synthesized Pt/WO3–C nanocomposite in acidic and alkaline media.
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Affiliation(s)
- Rabia Naeem
- Department of Chemistry, Government College University, Lahore, Pakistan
- Department of Chemistry, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia
| | - Saba Afzal
- Department of Chemistry, Sardar Bahadur Khan Women's University, Quetta, Pakistan
| | - Muhammad Adil Mansoor
- Department of Chemistry, School of Natural Sciences, National University of Sciences and Technology (NUST), H-12 Campus, Islamabad, Pakistan
| | - Khadija Munawar
- Department of Chemistry, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia
| | - Bibi Sherino
- Department of Chemistry, Sardar Bahadur Khan Women's University, Quetta, Pakistan
| | - Riaz Ahmed
- Department of Chemistry, Quaid-i-Azam University, Islamabad-45320, Pakistan
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5
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Ultrafine TaOx/CB Oxygen Reduction Electrocatalyst Operating in Both Acidic and Alkaline Media. Catalysts 2021. [DOI: 10.3390/catal12010035] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The high activity of non-platinum electrocatalysts for oxygen reduction reaction (ORR) in alkaline media is necessary for applications in energy conversion devices such as fuel cells and metal-air batteries. Herein, we present the electrocatalytic activity of TaOx/carbon black (CB) nanoparticles for the ORR in an alkaline atmosphere as well as in an acidic electrolyte. Ultrafine TaOx nanoparticles 1–2 nm in size and uniformly dispersed on CB supports were prepared by potentiostatic electrodeposition in a nonaqueous electrolyte and subsequent annealing treatment in an H2 flow. The TaOx/CB nanoparticles largely catalyzed the ORR with an onset potential of 1.03 VRHE in an O2-saturated 0.1 M KOH solution comparable to that of a commercial Pt/CB catalyst. ORR activity was also observed in 0.1 M H2SO4 solution. According to the rotating ring disk electrode measurement results, the oxide nanoparticles partly produced H2O2 during the ORR in 0.1 M KOH, and the ORR process was dominated by both the two- and four-electron reductions of oxygen in a diffusion-limited potential region. The Tafel slope of −120 mV dec−1 in low and high current densities revealed the surface stability of the oxide nanoparticles during the ORR. Therefore, these results demonstrated that the TaOx/CB nanoparticles were electroactive for the ORR in both acidic and alkaline electrolytes.
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Merz S, Wang J, Galvosas P, Granwehr J. MAS-NMR of [Pyr 13][Tf 2N] and [Pyr 16][Tf 2N] Ionic Liquids Confined to Carbon Black: Insights and Pitfalls. Molecules 2021; 26:6690. [PMID: 34771100 PMCID: PMC8587276 DOI: 10.3390/molecules26216690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Revised: 10/26/2021] [Accepted: 10/26/2021] [Indexed: 11/16/2022] Open
Abstract
Electrolytes based on ionic liquids (IL) are promising candidates to replace traditional liquid electrolytes in electrochemical systems, particularly in combination with carbon-based porous electrodes. Insight into the dynamics of such systems is imperative for tailoring electrochemical performance. In this work, 1-Methyl-1-propylpyrrolidinium bis(trifluoromethylsulfonyl)imide and 1-Hexyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide were studied in a carbon black (CB) host using spectrally resolved Carr-Purcell-Meiboom-Gill (CPMG) and 13-interval Pulsed Field Gradient Stimulated Echo (PFGSTE) Magic Angle Spinning Nuclear Magnetic Resonance (MAS-NMR). Data were processed using a sensitivity weighted Laplace inversion algorithm without non-negativity constraint. Previously found relations between the alkyl length and the aggregation behavior of pyrrolidinium-based cations were confirmed and characterized in more detail. For the IL in CB, a different aggregation behavior was found compared to the neat IL, adding the surface of a porous electrode as an additional parameter for the optimization of IL-based electrolytes. Finally, the suitability of MAS was assessed and critically discussed for investigations of this class of samples.
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Affiliation(s)
- Steffen Merz
- Fundamental Electrochemistry (IEK-9), Institute of Energy and Climate Research, Forschungszentrum Juelich, 52425 Juelich, Germany; (S.M.); (J.G.)
| | - Jie Wang
- MacDiamid Institute for Advanced Materials and Nanotechnology, School of Chemical and Physical Sciences, Victoria University Wellington, Wellington 6140, New Zealand;
| | - Petrik Galvosas
- MacDiamid Institute for Advanced Materials and Nanotechnology, School of Chemical and Physical Sciences, Victoria University Wellington, Wellington 6140, New Zealand;
| | - Josef Granwehr
- Fundamental Electrochemistry (IEK-9), Institute of Energy and Climate Research, Forschungszentrum Juelich, 52425 Juelich, Germany; (S.M.); (J.G.)
- Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, 52056 Aachen, Germany
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7
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A synergistic approach of Vulcan carbon and CeO2 in their composite as an efficient oxygen reduction reaction catalyst. J APPL ELECTROCHEM 2020. [DOI: 10.1007/s10800-020-01461-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Illathvalappil R, Kurungot S. Co
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Nanoparticle‐Supported Nitrogen‐doped Carbon as a Robust Catalyst for Oxygen Reduction Reaction in Both Acidic and Alkaline Conditions. ChemElectroChem 2020. [DOI: 10.1002/celc.202000786] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Rajith Illathvalappil
- Physical and Materials Chemistry DivisionCSIR-National Chemical Laboratory Pune, Maharashtra 411 008 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201 002 India
| | - Sreekumar Kurungot
- Physical and Materials Chemistry DivisionCSIR-National Chemical Laboratory Pune, Maharashtra 411 008 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201 002 India
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9
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Hota I, Debnath AK, Muthe KP, Varadwaj KSK, Parhi P. Towards Synergy of rGO and Ni doped CeO
2
in their copmposite as Efficient Catalyst for Oxygen Reduction Reaction. ChemistrySelect 2020. [DOI: 10.1002/slct.202001177] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ipsha Hota
- Department of ChemistryRavenshaw University Cuttack Odisha 753003 India
| | - A. K. Debnath
- Technical Physics DivisionBhabha Atomic Research Center Mumbai 400085 India
| | - K. P. Muthe
- Technical Physics DivisionBhabha Atomic Research Center Mumbai 400085 India
| | - K. S. K. Varadwaj
- Department of ChemistryRavenshaw University Cuttack Odisha 753003 India
| | - P. Parhi
- Department of ChemistryRavenshaw University Cuttack Odisha 753003 India
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10
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Shapovalov SS, Skabitsky IV, Mayorova NA, Shiryaev AA, Nickolsky MS, Grinberg VA. Synthesis of Cobalt‐Iron Chalcogenide Clusters as Precursors for Catalysts of Oxygen Electroreduction in Alkali Media. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000140] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Sergey S. Shapovalov
- N.S. Kurnakov Institute of General and Inorganic Chemistry The Russian Academy of Sciences Leninsky Ave. 31 119991 Moscow Russian Federation
- National Research University Higher School of Economics Vavilova St. 7 117312 Moscow Russian Federation
| | - Ivan V. Skabitsky
- N.S. Kurnakov Institute of General and Inorganic Chemistry The Russian Academy of Sciences Leninsky Ave. 31 119991 Moscow Russian Federation
| | - Natalia A. Mayorova
- Frumkin Institute of Physical Chemistry and Electrochemistry The Russian Academy of Sciences Leninsky Ave. 31 119991 Moscow Russian Federation
| | - Andrey A. Shiryaev
- Frumkin Institute of Physical Chemistry and Electrochemistry The Russian Academy of Sciences Leninsky Ave. 31 119991 Moscow Russian Federation
| | - Maximillian S. Nickolsky
- Frumkin Institute of Physical Chemistry and Electrochemistry The Russian Academy of Sciences Leninsky Ave. 31 119991 Moscow Russian Federation
- Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry The Russian Academy of Sciences Staromonetny per, 35 119017 Moscow Russian Federation
| | - Vitali A. Grinberg
- Frumkin Institute of Physical Chemistry and Electrochemistry The Russian Academy of Sciences Leninsky Ave. 31 119991 Moscow Russian Federation
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11
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Gangadharan PK, Bhange SN, Kabeer N, Illathvalappil R, Kurungot S. NiCo 2O 4 nanoarray on CNT sponge: a bifunctional oxygen electrode material for rechargeable Zn-air batteries. NANOSCALE ADVANCES 2019; 1:3243-3251. [PMID: 36133614 PMCID: PMC9417161 DOI: 10.1039/c9na00311h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2019] [Accepted: 07/07/2019] [Indexed: 05/11/2023]
Abstract
Ni- and Co-based materials have of late gained prominence over conventional noble metal-based ones as catalysts for energy devices. Here, a high performance catalyst which can facilitate both the oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) was developed by anchoring a NiCo2O4 nanowire array on a carbon nanotube sponge (NCS). The three-dimensional morphology of NCS ensured efficient transport of the reactants and products on the catalyst surface, thereby improving the activity of the material. The prepared catalyst showed remarkable OER activity, requiring an overpotential of 280 mV, which is comparable to that of noble-metal catalysts. In addition to the noteworthy OER performance, the catalyst performed well with respect to the ORR. The total oxygen electrode activity overpotential of the catalyst was found to be 0.83 V, which is lower than that of commercial electrodes such as Pt/C and RuO2. A rechargeable Zn-air battery constructed with NCS had an open circuit voltage of 1.42 V, a maximum power density of 160 mW cm-2, and an energy density of 706 W h kg-1. NCS exhibited bifunctional electrocatalytic activity and high stability for both the OER and ORR, proving to be a good replacement for noble metal electrodes in rechargeable metal-air batteries.
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Affiliation(s)
- Pranav K Gangadharan
- Physical and Materials Chemistry Division, CSIR-National Chemical Laboratory Pune Maharashtra India 411008
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 India
| | - Siddheshwar N Bhange
- Physical and Materials Chemistry Division, CSIR-National Chemical Laboratory Pune Maharashtra India 411008
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 India
| | - Nasrin Kabeer
- Physical and Materials Chemistry Division, CSIR-National Chemical Laboratory Pune Maharashtra India 411008
| | - Rajith Illathvalappil
- Physical and Materials Chemistry Division, CSIR-National Chemical Laboratory Pune Maharashtra India 411008
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 India
| | - Sreekumar Kurungot
- Physical and Materials Chemistry Division, CSIR-National Chemical Laboratory Pune Maharashtra India 411008
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 India
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12
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Kashyap V, Anand A, Soni R, Sreekumar K. Medium Modulated Oxygen Reduction Activity of Fe/Co Active Centre‐engrafted Electrocatalysts. ChemElectroChem 2019. [DOI: 10.1002/celc.201900260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Varchaswal Kashyap
- Physical and Materials Chemistry DivisionCSIR-National Chemical Laboratory Dr. Homi Bhabha Road Pune 41108 India
- Academy of Scientific and Innovative ResearchInstitutionAnusandhan Bhawan 2 RafiMarg New Delhi 110001 India
| | - Aljo Anand
- Physical and Materials Chemistry DivisionCSIR-National Chemical Laboratory Dr. Homi Bhabha Road Pune 41108 India
| | - Roby Soni
- Physical and Materials Chemistry DivisionCSIR-National Chemical Laboratory Dr. Homi Bhabha Road Pune 41108 India
- Academy of Scientific and Innovative ResearchInstitutionAnusandhan Bhawan 2 RafiMarg New Delhi 110001 India
| | - Kurungot Sreekumar
- Physical and Materials Chemistry DivisionCSIR-National Chemical Laboratory Dr. Homi Bhabha Road Pune 41108 India
- Academy of Scientific and Innovative ResearchInstitutionAnusandhan Bhawan 2 RafiMarg New Delhi 110001 India
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13
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Liang H, Yang C, Ji S, Jiang N, An X, Yang X, Wang H, Wang R. Cobalt-nickel phosphides@carbon spheres as highly efficient and stable electrocatalyst for hydrogen evolution reaction. CATAL COMMUN 2019. [DOI: 10.1016/j.catcom.2019.02.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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14
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Mesoporous nickel selenide N-doped carbon as a robust electrocatalyst for overall water splitting. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.01.093] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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15
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Ma Y, Ma Y, Bresser D, Ji Y, Geiger D, Kaiser U, Streb C, Varzi A, Passerini S. Cobalt Disulfide Nanoparticles Embedded in Porous Carbonaceous Micro-Polyhedrons Interlinked by Carbon Nanotubes for Superior Lithium and Sodium Storage. ACS NANO 2018; 12:7220-7231. [PMID: 29940098 DOI: 10.1021/acsnano.8b03188] [Citation(s) in RCA: 89] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Transition metal sulfides are appealing electrode materials for lithium and sodium batteries owing to their high theoretical capacity. However, they are commonly characterized by rather poor cycling stability and low rate capability. Herein, we investigate CoS2, serving as a model compound. We synthesized a porous CoS2/C micro-polyhedron composite entangled in a carbon-nanotube-based network (CoS2-C/CNT), starting from zeolitic imidazolate frameworks-67 as a single precursor. Following an efficient two-step synthesis strategy, the obtained CoS2 nanoparticles are uniformly embedded in porous carbonaceous micro-polyhedrons, interwoven with CNTs to ensure high electronic conductivity. The CoS2-C/CNT nanocomposite provides excellent bifunctional energy storage performance, delivering 1030 mAh g-1 after 120 cycles and 403 mAh g-1 after 200 cycles (at 100 mA g-1) as electrode for lithium-ion (LIBs) and sodium-ion batteries (SIBs), respectively. In addition to these high capacities, the electrodes show outstanding rate capability and excellent long-term cycling stability with a capacity retention of 80% after 500 cycles for LIBs and 90% after 200 cycles for SIBs. In situ X-ray diffraction reveals a significant contribution of the partially graphitized carbon to the lithium and at least in part also for the sodium storage and the report of a two-step conversion reaction mechanism of CoS2, eventually forming metallic Co and Li2S/Na2S. Particularly the lithium storage capability at elevated (dis-)charge rates, however, appears to be substantially pseudocapacitive, thus benefiting from the highly porous nature of the nanocomposite.
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Affiliation(s)
- Yuan Ma
- Helmholtz Institute Ulm (HIU) , Helmholtzstrasse 11 , D-89081 Ulm , Germany
- Karlsruhe Institute of Technology (KIT) , P.O. Box 3640, D-76021 Karlsruhe , Germany
| | - Yanjiao Ma
- Helmholtz Institute Ulm (HIU) , Helmholtzstrasse 11 , D-89081 Ulm , Germany
- Karlsruhe Institute of Technology (KIT) , P.O. Box 3640, D-76021 Karlsruhe , Germany
| | - Dominic Bresser
- Helmholtz Institute Ulm (HIU) , Helmholtzstrasse 11 , D-89081 Ulm , Germany
- Karlsruhe Institute of Technology (KIT) , P.O. Box 3640, D-76021 Karlsruhe , Germany
| | - Yuanchun Ji
- Institute of Inorganic Chemistry I , Ulm University , Albert-Einstein-Allee 11 , D-89081 Ulm , Germany
| | - Dorin Geiger
- Central Facility for Electron Microscopy, Group of Electron Microscopy of Materials Science , Ulm University , Albert-Einstein-Allee 11 , D-89081 Ulm , Germany
| | - Ute Kaiser
- Central Facility for Electron Microscopy, Group of Electron Microscopy of Materials Science , Ulm University , Albert-Einstein-Allee 11 , D-89081 Ulm , Germany
| | - Carsten Streb
- Helmholtz Institute Ulm (HIU) , Helmholtzstrasse 11 , D-89081 Ulm , Germany
- Institute of Inorganic Chemistry I , Ulm University , Albert-Einstein-Allee 11 , D-89081 Ulm , Germany
| | - Alberto Varzi
- Helmholtz Institute Ulm (HIU) , Helmholtzstrasse 11 , D-89081 Ulm , Germany
- Karlsruhe Institute of Technology (KIT) , P.O. Box 3640, D-76021 Karlsruhe , Germany
| | - Stefano Passerini
- Helmholtz Institute Ulm (HIU) , Helmholtzstrasse 11 , D-89081 Ulm , Germany
- Karlsruhe Institute of Technology (KIT) , P.O. Box 3640, D-76021 Karlsruhe , Germany
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16
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Ma Y, Ma Y, Ulissi U, Ji Y, Streb C, Bresser D, Passerini S. Influence of the doping ratio and the carbon coating content on the electrochemical performance of Co-doped SnO2 for lithium-ion anodes. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.04.209] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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17
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Ad hoc tailored electrocatalytic MnO2 nanorods for the oxygen reduction in aqueous and organic media. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2017.05.035] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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18
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Chen Y, Wang H, Ji S, Lv W, Wang R. Harvesting a 3D N-Doped Carbon Network from Waste Bean Dregs by Ionothermal Carbonization as an Electrocatalyst for an Oxygen Reduction Reaction. MATERIALS 2017; 10:ma10121366. [PMID: 29182581 PMCID: PMC5744301 DOI: 10.3390/ma10121366] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Revised: 11/17/2017] [Accepted: 11/17/2017] [Indexed: 11/16/2022]
Abstract
Three-dimensional nitrogen-doped carbon (3D-NCN) has been synthesized via the ionothermal carbonization method using waste soybean dregs (SD) as the precursor. N₂ adsorption/desorption isotherms show that the as-prepared 3D-NCN formed a hierarchically porous structure with a specific BET surface area of 1093.4 m² g-1 and a total pore volume of 1.77 cm³ g-1. The TEM images clearly show that graphene-like carbon sheets were formed on the edge of the networks. The characterization of the samples collected at different temperature indicated that salt melt plays the key role in the formation of the network structure and rich pores. When 3D-NCN is as electrocatalyst for ORR, it shows an onset potential of 0.945 V with a more positive half-wave potential (0.846 V), which is comparable to that of commercial Pt/C. In addition, the long-term cycle results show that the onset potential and half-wave potential only negatively shifted by 6 mV and 8 mV after 10,000 cycles respectively, which are smaller than those values of commercial Pt/C. Due to its high ORR activity, durability, and low-cost, producing 3D-NCN from SD in molten salt medium provides a promising approach to replace the Pt-based catalysts for use in fuel cells.
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Affiliation(s)
- Yimai Chen
- College of Biological, Chemical Science and Chemical Engineering, Jiaxing University, Jiaxing 314001, China.
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China.
| | - Hui Wang
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China.
- Institute of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China.
| | - Shan Ji
- College of Biological, Chemical Science and Chemical Engineering, Jiaxing University, Jiaxing 314001, China.
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China.
| | - Weizhong Lv
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China.
| | - Rongfang Wang
- Institute of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China.
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Kashyap V, Singh SK, Kurungot S. Activity Tuning of Cobalt Ferrite Nanoparticles Anchored on N-Doped Reduced Graphene Oxide as a Potential Oxygen Reduction Electrocatalyst by Zn Substitution in the Spinel Matrix. ChemistrySelect 2017. [DOI: 10.1002/slct.201701684] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Varchaswal Kashyap
- Physical and Materials Chemistry Division; CSIR-National Chemical Laboratory; Dr. Homi Bhabha Road Pune 411008 India
- Academy of Scientific and Innovative Research, Anusandhan Bhawan; 2 Rafi Marg New Delhi 110 001 India
| | - Santosh K. Singh
- Physical and Materials Chemistry Division; CSIR-National Chemical Laboratory; Dr. Homi Bhabha Road Pune 411008 India
- Academy of Scientific and Innovative Research, Anusandhan Bhawan; 2 Rafi Marg New Delhi 110 001 India
| | - Sreekumar Kurungot
- Physical and Materials Chemistry Division; CSIR-National Chemical Laboratory; Dr. Homi Bhabha Road Pune 411008 India
- Academy of Scientific and Innovative Research, Anusandhan Bhawan; 2 Rafi Marg New Delhi 110 001 India
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Al-Hakemy AZ, Nassr ABAA, Naggar AH, Elnouby MS, Soliman HMAEF, Taher MA. Electrodeposited cobalt oxide nanoparticles modified carbon nanotubes as a non-precious catalyst electrode for oxygen reduction reaction. J APPL ELECTROCHEM 2016. [DOI: 10.1007/s10800-016-1027-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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21
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Xing X, Qu H, Chen P, Chi B, Xie H. Studies on competitive adsorption of dyes onto carbon (XC-72) and regeneration of adsorbent. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2016; 74:2505-2514. [PMID: 27858807 DOI: 10.2166/wst.2016.413] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Carbon as an adsorbent has been widely studied for wastewater treatment, but the regeneration of adsorbent has been scarcely reported. In this paper, an economical and environmental method was applied to regenerate carbon (XC-72). Results showed that both anhydrous ethanol and deionized water did not obtain optimal effect for the desorption of Acid Orange 7, Ponceau 2R and Rhodamine B, but the desorption effect was dramatically improved when anhydrous ethanol and deionized water were mixed in a certain volume ratio. In addition, the adsorption kinetics of the three dyes were investigated, which showed that the process of adsorption could be well represented by the pseudo-second-order model. For the study of competitive adsorption, this indicated that the interaction between adsorbent and adsorbate had something to do with electrostatic attraction.
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Affiliation(s)
- Xiang Xing
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China E-mail:
| | - Hongxia Qu
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China E-mail:
| | - Peng Chen
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China E-mail:
| | - Bin Chi
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China E-mail:
| | - Huifang Xie
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
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22
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Iron and nitrogen co-doped carbon derived from soybeans as efficient electro-catalysts for the oxygen reduction reaction. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.08.090] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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23
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Kashyap V, Singh SK, Kurungot S. Cobalt Ferrite Bearing Nitrogen-Doped Reduced Graphene Oxide Layers Spatially Separated with Microporous Carbon as Efficient Oxygen Reduction Electrocatalyst. ACS APPLIED MATERIALS & INTERFACES 2016; 8:20730-40. [PMID: 27464229 DOI: 10.1021/acsami.6b05416] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
The present work discloses how high-quality dispersion of fine particles of cobalt ferrite (CF) could be attained on nitrogen-doped reduced graphene oxide (CF/N-rGO) and how this material in association with a microporous carbon phase could deliver significantly enhanced activity toward electrochemical oxygen reduction reaction (ORR). Our study indicates that the microporous carbon phase plays a critical role in spatially separating the layers of CF/N-rGO and in creating a favorable atmosphere to ensure the seamless distribution of the reactants to the active sites located on CF/N-rGO. In terms of the ORR current density, the heat-treated hybrid catalyst at 150 °C (CF/N-rGO-150) is found to be clearly outperforming (7.4 ± 0.5 mA/cm(2)) the state-of-the-art 20 wt % Pt-supported carbon catalyst (PtC) (5.4 ± 0.5 mA/cm(2)). The mass activity and stability of CF-N-rGO-150 are distinctly superior to PtC even after 5000 electrochemical cycles. As a realistic system level exploration of the catalyst, testing of a primary zinc-air battery could be demonstrated using CF/N-rGO-150 as the cathode catalyst. The battery is giving a galvanostatic discharge time of 15 h at a discharge current density of 20 mA/cm(2) and a specific capacity of ∼630 mAh g(-1) in 6 M KOH by using a Zn foil as the anode. Distinctly, the battery performance of this system is found to be superior to that of PtC in less concentrated KOH solution as the electrolyte.
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Affiliation(s)
- Varchaswal Kashyap
- Physical and Materials Chemistry Division, CSIR-National Chemical Laboratory , Dr. Homi Bhabha Road, Pune 41108, India
- Academy of Scientific and Innovative Research , Anusandhan Bhawan, 2 Rafi Marg, New Delhi 110001, India
| | - Santosh K Singh
- Physical and Materials Chemistry Division, CSIR-National Chemical Laboratory , Dr. Homi Bhabha Road, Pune 41108, India
- Academy of Scientific and Innovative Research , Anusandhan Bhawan, 2 Rafi Marg, New Delhi 110001, India
| | - Sreekumar Kurungot
- Physical and Materials Chemistry Division, CSIR-National Chemical Laboratory , Dr. Homi Bhabha Road, Pune 41108, India
- Academy of Scientific and Innovative Research , Anusandhan Bhawan, 2 Rafi Marg, New Delhi 110001, India
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24
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Liu J, Song P, Ruan M, Xu W. Catalytic properties of graphitic and pyridinic nitrogen doped on carbon black for oxygen reduction reaction. CHINESE JOURNAL OF CATALYSIS 2016. [DOI: 10.1016/s1872-2067(16)62456-7] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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25
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The Influence of Carbonaceous Matrices and Electrocatalytic MnO₂ Nanopowders on Lithium-Air Battery Performances. NANOMATERIALS 2016; 6:nano6010010. [PMID: 28344267 PMCID: PMC5302542 DOI: 10.3390/nano6010010] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Revised: 12/28/2015] [Accepted: 12/31/2015] [Indexed: 11/17/2022]
Abstract
Here, we report new gas diffusion electrodes (GDEs) prepared by mixing two different pore size carbonaceous matrices and pure and silver-doped manganese dioxide nanopowders, used as electrode supports and electrocatalytic materials, respectively. MnO2 nanoparticles are finely characterized in terms of structural (X-ray powder diffraction (XRPD), energy dispersive X-ray (EDX)), morphological (SEM, high-angle annular dark field (HAADF)-scanning transmission electron microscopy (STEM)/TEM), surface (Brunauer Emmet Teller (BET)-Barrett Joyner Halenda (BJH) method) and electrochemical properties. Two mesoporous carbons, showing diverse surface areas and pore volume distributions, have been employed. The GDE performances are evaluated by chronopotentiometric measurements to highlight the effects induced by the adopted materials. The best combination, hollow core mesoporous shell carbon (HCMSC) with 1.0% Ag-doped hydrothermal MnO2 (M_hydro_1.0%Ag) allows reaching very high specific capacity close to 1400 mAh·g−1. Considerably high charge retention through cycles is also observed, due to the presence of silver as a dopant for the electrocatalytic MnO2 nanoparticles.
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26
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Lu L, Hao Q, Lei W, Xia X, Liu P, Sun D, Wang X, Yang X. Well-Combined Magnetically Separable Hybrid Cobalt Ferrite/Nitrogen-Doped Graphene as Efficient Catalyst with Superior Performance for Oxygen Reduction Reaction. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:5833-43. [PMID: 26390018 DOI: 10.1002/smll.201502322] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Revised: 08/13/2015] [Indexed: 05/08/2023]
Abstract
Catalysts with low-cost, high activity and stability toward oxygen reduction reaction (ORR) are extremely desirable, but its development still remains a great challenge. Here, a novel magnetically separable hybrid of multimetal oxide, cobalt ferrite (CoFe2O4), anchored on nitrogen-doped reduced graphene oxide (CoFe2O4/NG) is prepared via a facile solvothermal method followed by calcination at 500 °C. The structure of CoFe2O4/NG and the interaction of both components are analyzed by several techniques. The possible formation of Co/Fe-N interaction in the CoFe2O4/NG catalyst is found. As a result, the well-combination of CoFe2O4 nanoparticles with NG and its improved crystallinity lead to a synergistic and efficient catalyst with high performance to ORR through a four-electron-transfer process in alkaline medium. The CoFe2O4/NG exhibits particularly comparable catalytic activity as commercial Pt/C catalyst, and superior stability against methanol oxidation and CO poisoning. Meanwhile, it has been proved that both nitrogen doping and the spinel structure of CoFe2O4 can have a significant contribution to the catalytic activity by contrast experiments. Multimetal oxide hybrid demonstrates better catalysis to ORR than a single metal oxide hybrid. All results make the low-cost and magnetically separable CoFe2O4/NG a promising alternative for costly platinum-based ORR catalyst in fuel cells and metal-air batteries.
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Affiliation(s)
- Lei Lu
- Key Laboratory for Soft Chemistry and Functional Materials, School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Qingli Hao
- Key Laboratory for Soft Chemistry and Functional Materials, School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Wu Lei
- Key Laboratory for Soft Chemistry and Functional Materials, School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Xifeng Xia
- Key Laboratory for Soft Chemistry and Functional Materials, School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Peng Liu
- Key Laboratory for Soft Chemistry and Functional Materials, School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Dongping Sun
- Key Laboratory for Soft Chemistry and Functional Materials, School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Xin Wang
- Key Laboratory for Soft Chemistry and Functional Materials, School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Xujie Yang
- Key Laboratory for Soft Chemistry and Functional Materials, School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
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Yuan W, Li J, Xie A, Chen P, Li S, Shen Y. Practical, cost-effective and large-scale production of nitrogen-doped porous carbon particles and their use as metal-free electrocatalysts for oxygen reduction. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.02.242] [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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28
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Oxygen reduction reaction activity of LaMn1-xCoxO3-graphene nanocomposite for zinc-air battery. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.02.048] [Citation(s) in RCA: 93] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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29
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Sponge-like carbon containing nitrogen and iron provides a non-precious oxygen reduction catalyst. J Solid State Electrochem 2015. [DOI: 10.1007/s10008-014-2719-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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30
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Ma Y, Wang H, Feng H, Ji S, Mao X, Wang R. Three-dimensional iron, nitrogen-doped carbon foams as efficient electrocatalysts for oxygen reduction reaction in alkaline solution. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2014.07.130] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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