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Ge K, Shao H, Raymundo-Piñero E, Taberna PL, Simon P. Cation desolvation-induced capacitance enhancement in reduced graphene oxide (rGO). Nat Commun 2024; 15:1935. [PMID: 38431624 PMCID: PMC10908864 DOI: 10.1038/s41467-024-46280-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Accepted: 02/15/2024] [Indexed: 03/05/2024] Open
Abstract
Understanding the local electrochemical processes is of key importance for efficient energy storage applications, including electrochemical double layer capacitors. In this work, we studied the charge storage mechanism of a model material - reduced graphene oxide (rGO) - in aqueous electrolyte using the combination of cavity micro-electrode, operando electrochemical quartz crystal microbalance (EQCM) and operando electrochemical dilatometry (ECD) tools. We evidence two regions with different charge storage mechanisms, depending on the cation-carbon interaction. Notably, under high cathodic polarization (region II), we report an important capacitance increase in Zn2+ containing electrolyte with minimum volume expansion, which is associated with Zn2+ desolvation resulting from strong electrostatic Zn2+-rGO interactions. These results highlight the significant role of ion-electrode interaction strength and cation desolvation in modulating the charging mechanisms, offering potential pathways for optimized capacitive energy storage. As a broader perspective, understanding confined electrochemical systems and the coupling between chemical, electrochemical and transport processes in confinement may open tremendous opportunities for energy, catalysis or water treatment applications in the future.
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Affiliation(s)
- Kangkang Ge
- Université Paul Sabatier, CIRIMAT UMR CNRS 5085, 118 Route de Narbonne, 31062, Toulouse, France
| | - Hui Shao
- i-Lab, CAS Center for Excellence in Nanoscience, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences (CAS), Suzhou, 215123, China
| | - Encarnacion Raymundo-Piñero
- Réseau sur le Stockage Electrochimique de l'Energie (RS2E), FR CNRS 3459, Amiens, France
- Université Orléans, CNRS, CEMHTI UPR3079, Orléans, France
| | - Pierre-Louis Taberna
- Université Paul Sabatier, CIRIMAT UMR CNRS 5085, 118 Route de Narbonne, 31062, Toulouse, France.
- Réseau sur le Stockage Electrochimique de l'Energie (RS2E), FR CNRS 3459, Amiens, France.
| | - Patrice Simon
- Université Paul Sabatier, CIRIMAT UMR CNRS 5085, 118 Route de Narbonne, 31062, Toulouse, France.
- Réseau sur le Stockage Electrochimique de l'Energie (RS2E), FR CNRS 3459, Amiens, France.
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2
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Czagany M, Hompoth S, Keshri AK, Pandit N, Galambos I, Gacsi Z, Baumli P. Supercapacitors: An Efficient Way for Energy Storage Application. MATERIALS (BASEL, SWITZERLAND) 2024; 17:702. [PMID: 38591562 PMCID: PMC10856355 DOI: 10.3390/ma17030702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 01/13/2024] [Accepted: 01/29/2024] [Indexed: 04/10/2024]
Abstract
To date, batteries are the most widely used energy storage devices, fulfilling the requirements of different industrial and consumer applications. However, the efficient use of renewable energy sources and the emergence of wearable electronics has created the need for new requirements such as high-speed energy delivery, faster charge-discharge speeds, longer lifetimes, and reusability. This leads to the need for supercapacitors, which can be a good complement to batteries. However, one of their drawbacks is their lower energy storage capability, which has triggered worldwide research efforts to increase their energy density. With the introduction of novel nanostructured materials, hierarchical pore structures, hybrid devices combining these materials, and unconventional electrolytes, significant developments have been reported in the literature. This paper reviews the short history of the evolution of supercapacitors and the fundamental aspects of supercapacitors, positioning them among other energy-storage systems. The main electrochemical measurement methods used to characterize their energy storage features are discussed with a focus on their specific characteristics and limitations. High importance is given to the integral components of the supercapacitor cell, particularly to the electrode materials and the different types of electrolytes that determine the performance of the supercapacitor device (e.g., storage capability, power output, cycling stability). Current directions in the development of electrode materials, including carbonaceous forms, transition metal-based compounds, conducting polymers, and novel materials are discussed. The synergy between the electrode material and the current collector is a key factor, as well as the fine-tuning of the electrode material and electrolyte.
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Affiliation(s)
- Mate Czagany
- Institute of Physical Metallurgy, Metal Forming and Nanotechnology, University of Miskolc, 3515 Miskolc, Hungary; (S.H.); (Z.G.)
| | - Szabolcs Hompoth
- Institute of Physical Metallurgy, Metal Forming and Nanotechnology, University of Miskolc, 3515 Miskolc, Hungary; (S.H.); (Z.G.)
| | - Anup Kumar Keshri
- Plasma Spray Coating Laboratory, Metallurgical and Materials Engineering, Indian Institute of Technology Patna, Bihta 801106, Bihar, India; (A.K.K.); (N.P.)
| | - Niranjan Pandit
- Plasma Spray Coating Laboratory, Metallurgical and Materials Engineering, Indian Institute of Technology Patna, Bihta 801106, Bihar, India; (A.K.K.); (N.P.)
| | | | - Zoltan Gacsi
- Institute of Physical Metallurgy, Metal Forming and Nanotechnology, University of Miskolc, 3515 Miskolc, Hungary; (S.H.); (Z.G.)
| | - Peter Baumli
- Institute of Physical Metallurgy, Metal Forming and Nanotechnology, University of Miskolc, 3515 Miskolc, Hungary; (S.H.); (Z.G.)
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3
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Song Y, Zhang X, Klusener PAA, Nockemann P. Advancing mesoporous carbon synthesis for supercapacitors: a systematic investigation of cross-linking agent effects on pore structure and functionality. NANOSCALE 2023. [PMID: 38032274 DOI: 10.1039/d3nr03244b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2023]
Abstract
Soft-templating synthesis provides an effective route to prepare ordered mesoporous carbons (MCs) that can be used for supercapacitors. During this process, the cross-linking of carbon precursors is critical to obtain tailored pore structural MCs, thus careful selection of appropriate cross-linking agents is required. Despite the shift from the prevailing cross-linker formaldehyde to its more environmentally friendly alternatives, detailed understanding on the influence of different cross-linking agents on templating synthesis is still lacking. Therefore, it remains challenging to draw a conclusion regarding which cross-linker can effectively enable an ideal cross-linking and a robust templating synthesis of ordered MCs. This work presents a systematic study, by comparing three typical cross-linkers (formaldehyde, glyoxal, and glyoxylic acid), on the pore architecture, surface functionality, and electrochemical performance of resulting MCs. Both the type of cross-linker and its ratio with precursor monomer were found to be crucial for the pore architecture and electrochemical performance of resulting MCs. Glyoxal showed to be a promising cross-linker for easily generating ordered mesopores between 3.3-6.1 nm when the molar ratio between cross-linker and carbon precursor ranged from 1 to 2, whereas glyoxylic acid and formaldehyde induced interrupted or disordered mesopores. When the resulting MCs were used as supercapacitor electrodes, those cross-linked with glyoxal also led to overall higher capacitance in both 6 M KOH aqueous and ionic liquid [N2220][NTf2]/acetonitrile electrolytes thanks to the dominance of ordered mesopore channels, especially MC prepared at glyoxal/precursor molar ratio of 1.5. These findings on the effect of cross-linking on templating synthesis can be used to guide the customisation of MCs for supercapacitors and other applications by smartly choosing a suitable cross-linking agent and its ratio with the precursor.
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Affiliation(s)
- Yaoguang Song
- The QUILL Research Centre, School of Chemistry and Chemical Engineering, Queen's University Belfast, BT9 5AG, Belfast, UK.
| | - Xiaolei Zhang
- Department of Chemical and Process Engineering, University of Strathclyde, G1 1XJ, Glasgow, UK.
| | - Peter A A Klusener
- Shell Global Solutions International B.V., Energy Transition Campus Amsterdam, Grasweg 31, 1031 HW Amsterdam, The Netherlands
| | - Peter Nockemann
- The QUILL Research Centre, School of Chemistry and Chemical Engineering, Queen's University Belfast, BT9 5AG, Belfast, UK.
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4
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Käärik M, Arulepp M, Perkson A, Leis J. Effect of Pore Size Distribution on Energy Storage of Nanoporous Carbon Materials in Neat and Dilute Ionic Liquid Electrolytes. Molecules 2023; 28:7191. [PMID: 37894670 PMCID: PMC10609406 DOI: 10.3390/molecules28207191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 10/17/2023] [Accepted: 10/18/2023] [Indexed: 10/29/2023] Open
Abstract
This study investigates three carbide-derived carbon (CDC) materials (TiC, NbC, and Mo2C) characterized by uni-, bi-, and tri-modal pore sizes, respectively, for energy storage in both neat and acetonitrile-diluted 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide. A distribution of micro- and mesopores was studied through low-temperature N2 and CO2 adsorption. To elucidate the relationships between porosity and the electrochemical properties of carbon materials, cyclic voltammetry, galvanostatic cycling, and electrochemical impedance spectroscopy measurements were conducted using three-electrode test cells. The ultramicroporous TiC-derived carbon is characterized by a high packing density of 0.85 g cm-3, resulting in superior cathodic and anodic capacitances for both neat ionic liquid (IL) and a 1.9 M IL/acetonitrile electrolyte (93.6 and 75.8 F cm-3, respectively, in the dilute IL). However, the bi-modal pore-sized microporous NbC-derived carbon, with slightly lower cathodic and anodic capacitances (i.e., 85.0 and 73.7 F cm-3 in the dilute IL, respectively), has a lower pore resistance, making it more suitable for real-world applications. A symmetric two-electrode capacitor incorporating microporous CDC-NbC electrodes revealed an acceptable cycle life. After 10,000 cycles, the cell retained approximately 75% of its original capacitance, while the equivalent series resistance (ESR) only increased by 13%.
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Affiliation(s)
- Maike Käärik
- Institute of Chemistry, University of Tartu, Ravila 14a, 50411 Tartu, Estonia
| | - Mati Arulepp
- Skeleton Technologies, Sepise 7, 11415 Tallinn, Estonia
| | - Anti Perkson
- Skeleton Technologies, Sepise 7, 11415 Tallinn, Estonia
| | - Jaan Leis
- Institute of Chemistry, University of Tartu, Ravila 14a, 50411 Tartu, Estonia
- Skeleton Technologies, Sepise 7, 11415 Tallinn, Estonia
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Ramach U, Lee J, Altmann F, Schussek M, Olgiati M, Dziadkowiec J, Mears LLE, Celebi AT, Lee DW, Valtiner M. Real-time visualisation of ion exchange in molecularly confined spaces where electric double layers overlap. Faraday Discuss 2023; 246:487-507. [PMID: 37436123 PMCID: PMC10568259 DOI: 10.1039/d3fd00038a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 03/28/2023] [Indexed: 10/13/2023]
Abstract
Ion interactions with interfaces and transport in confined spaces, where electric double layers overlap, are essential in many areas, ranging from crevice corrosion to understanding and creating nano-fluidic devices at the sub 10 nm scale. Tracking the spatial and temporal evolution of ion exchange, as well as local surface potentials, in such extreme confinement situations is both experimentally and theoretically challenging. Here, we track in real-time the transport processes of ionic species (LiClO4) confined between a negatively charged mica surface and an electrochemically modulated gold surface using a high-speed in situ sensing Surface Forces Apparatus. With millisecond temporal and sub-micrometer spatial resolution we capture the force and distance equilibration of ions in the confinement of D ≈ 2-3 nm in an overlapping electric double layer (EDL) during ion exchange. Our data indicate that an equilibrated ion concentration front progresses with a velocity of 100-200 μm s-1 into a confined nano-slit. This is in the same order of magnitude and in agreement with continuum estimates from diffusive mass transport calculations. We also compare the ion structuring using high resolution imaging, molecular dynamics simulations, and calculations based on a continuum model for the EDL. With this data we can predict the amount of ion exchange, as well as the force between the two surfaces due to overlapping EDLs, and critically discuss experimental and theoretical limitations and possibilities.
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Affiliation(s)
- Ulrich Ramach
- Vienna University of Technology, Wiedner Hauptstrasse 8-10, Vienna, Austria.
- CEST (Centre for Electrochemical Surface Technology), Viktor-Kaplan-Strasse 2, Wiener Neustadt, Austria
| | - Jinhoon Lee
- Ulsan National Institute of Science & Technology, 50 UNIST-gil, Eonyang-eup, Ulju-gun, Ulsan, South Korea.
| | - Florian Altmann
- Vienna University of Technology, Wiedner Hauptstrasse 8-10, Vienna, Austria.
| | - Martin Schussek
- Vienna University of Technology, Wiedner Hauptstrasse 8-10, Vienna, Austria.
| | - Matteo Olgiati
- Vienna University of Technology, Wiedner Hauptstrasse 8-10, Vienna, Austria.
- CEST (Centre for Electrochemical Surface Technology), Viktor-Kaplan-Strasse 2, Wiener Neustadt, Austria
| | - Joanna Dziadkowiec
- NJORD Centre, Department of Physics, University of Oslo, Oslo 0371, Norway
| | - Laura L E Mears
- Vienna University of Technology, Wiedner Hauptstrasse 8-10, Vienna, Austria.
| | - Alper T Celebi
- Vienna University of Technology, Wiedner Hauptstrasse 8-10, Vienna, Austria.
| | - Dong Woog Lee
- Ulsan National Institute of Science & Technology, 50 UNIST-gil, Eonyang-eup, Ulju-gun, Ulsan, South Korea.
| | - Markus Valtiner
- Vienna University of Technology, Wiedner Hauptstrasse 8-10, Vienna, Austria.
- CEST (Centre for Electrochemical Surface Technology), Viktor-Kaplan-Strasse 2, Wiener Neustadt, Austria
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6
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Zhao L, Li Y, Yu M, Peng Y, Ran F. Electrolyte-Wettability Issues and Challenges of Electrode Materials in Electrochemical Energy Storage, Energy Conversion, and Beyond. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023:e2300283. [PMID: 37085907 DOI: 10.1002/advs.202300283] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 04/02/2023] [Indexed: 05/03/2023]
Abstract
The electrolyte-wettability of electrode materials in liquid electrolytes plays a crucial role in electrochemical energy storage, conversion systems, and beyond relied on interface electrochemical process. However, most electrode materials do not have satisfactory electrolyte-wettability for possibly electrochemical reaction. In the last 30 years, there are a lot of literature have directed at exploiting methods to improve electrolyte-wettability of electrodes, understanding basic electrolyte-wettability mechanisms of electrode materials, exploring the effect of electrolyte-wettability on its electrochemical energy storage, conversion, and beyond performance. This review systematically and comprehensively evaluates the effect of electrolyte-wettability on electrochemical energy storage performance of the electrode materials used in supercapacitors, metal ion batteries, and metal-based batteries, electrochemical energy conversion performance of the electrode materials used in fuel cells and electrochemical water splitting systems, as well as capacitive deionization performance of the electrode materials used in capacitive deionization systems. Finally, the challenges in approaches for improving electrolyte-wettability of electrode materials, characterization techniques of electrolyte-wettability, as well as electrolyte-wettability of electrode materials applied in special environment and other electrochemical systems with electrodes and liquid electrolytes, which gives future possible directions for constructing interesting electrolyte-wettability to meet the demand of high electrochemical performance, are also discussed.
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Affiliation(s)
- Lei Zhao
- State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Department of Polymeric Materials Science and Engineering, School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou, Gansu, 730050, P. R. China
| | - Yuan Li
- State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Department of Polymeric Materials Science and Engineering, School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou, Gansu, 730050, P. R. China
| | - Meimei Yu
- State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Department of Polymeric Materials Science and Engineering, School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou, Gansu, 730050, P. R. China
| | - Yuanyou Peng
- State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Department of Polymeric Materials Science and Engineering, School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou, Gansu, 730050, P. R. China
| | - Fen Ran
- State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Department of Polymeric Materials Science and Engineering, School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou, Gansu, 730050, P. R. China
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7
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Elliott JP, Osti NC, Tyagi M, Mamontov E, Liu L, Serrano JM, Cao K, Liu G. Exceptionally Fast Ion Diffusion in Block Copolymer-Based Porous Carbon Fibers. ACS APPLIED MATERIALS & INTERFACES 2022; 14:36980-36986. [PMID: 35916606 DOI: 10.1021/acsami.2c12755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Confined ionic liquids in hydrophilic porous media have disrupted lattices and can be divided into two layers: An immobile ion layer adheres to the pore surfaces, and an inner layer exhibits faster mobility than the bulk. In this work, we report the first study of ionic liquids confined in block copolymer-based porous carbon fibers (PCFs) synthesized from polyacrylonitrile-block-polymethyl methacrylate (PAN-b-PMMA). The PCFs contain a network of unimodal mesopores of 13.6 nm in diameter and contain more hydrophilic surface functional groups than previously studied porous carbon. Elastic neutron scattering shows no freezing point for 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIM]BF4) confined in PCFs down to 20 K. Quasi-elastic neutron scattering (QENS) is used to measure the diffusion of [BMIM]BF4 confined in PCFs, which, surprisingly, is 7-fold faster than in the bulk. The unprecedentedly high ion diffusion remarks that PCFs hold exceptional potential for use in electrochemical catalysis, energy conversion, and storage.
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Affiliation(s)
- John P Elliott
- Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Naresh C Osti
- Neutron Scattering Division, Oak Ridge National Laboratory, P.O. Box 2008 MS6455, Oak Ridge, Tennessee 37831, United States
| | - Madhusudan Tyagi
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
- Department of Materials Science, University of Maryland, College Park, Maryland 20742, United States
| | - Eugene Mamontov
- Neutron Scattering Division, Oak Ridge National Laboratory, P.O. Box 2008 MS6455, Oak Ridge, Tennessee 37831, United States
| | - Lifeng Liu
- International Iberian Nanotechnology Laboratory (INL), Avenida Mestre José Veiga, 4715-330 Braga, Portugal
| | - Joel M Serrano
- Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Ke Cao
- Macromolecules Innovation Institute, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Guoliang Liu
- Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24061, United States
- Macromolecules Innovation Institute, Virginia Tech, Blacksburg, Virginia 24061, United States
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8
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Gannett CN, Kim J, Tirtariyadi D, Milner PJ, Abruña HD. Investigation of ion-electrode interactions of linear polyimides and alkali metal ions for next generation alternative-ion batteries. Chem Sci 2022; 13:9191-9201. [PMID: 36093008 PMCID: PMC9384138 DOI: 10.1039/d2sc02939a] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Accepted: 07/04/2022] [Indexed: 11/21/2022] Open
Abstract
Organic electrode materials offer unique opportunities to utilize ion-electrode interactions to develop diverse, versatile, and high-performing secondary batteries, particularly for applications requiring high power densities. However, a lack of well-defined structure-property relationships for redox-active organic materials restricts the advancement of the field. Herein, we investigate a family of diimide-based polymer materials with several charge-compensating ions (Li+, Na+, K+) in order to systematically probe how redox-active moiety, ion, and polymer flexibility dictate their thermodynamic and kinetic properties. When favorable ion-electrode interactions are employed (e.g., soft K+ anions with soft perylenediimide dianions), the resulting batteries demonstrate increased working potentials and improved cycling stabilities. Further, for all polymers examined herein, we demonstrate that K+ accesses the highest percentage of redox-active groups due to its small solvation shell/energy. Through crown ether experiments, cyclic voltammetry, and activation energy measurements, we provide insights into the charge compensation mechanisms of three different polymer structures and rationalize these findings in terms of the differing degrees of improvements observed when cycling with K+. Critically, we find that the most flexible polymer enables access to the highest fraction of active sites due to the small activation energy barrier during charge/discharge. These results suggest that improved capacities may be accessible by employing more flexible structures. Overall, our in-depth structure-activity investigation demonstrates how variables such as polymer structure and cation can be used to optimize battery performance and enable the realization of novel battery chemistries.
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Affiliation(s)
- Cara N Gannett
- Department of Chemistry and Chemical Biology, Cornell University Ithaca NY 14850 USA
| | - Jaehwan Kim
- Department of Chemistry and Chemical Biology, Cornell University Ithaca NY 14850 USA
| | - Dave Tirtariyadi
- Department of Chemistry and Chemical Biology, Cornell University Ithaca NY 14850 USA
| | - Phillip J Milner
- Department of Chemistry and Chemical Biology, Cornell University Ithaca NY 14850 USA
| | - Héctor D Abruña
- Department of Chemistry and Chemical Biology, Cornell University Ithaca NY 14850 USA
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9
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ZIF-8 derived carbon with confined sub-nanometer pores for electrochemically selective separation of chloride ions. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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10
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Uralcan B, Uralcan IB. Origin of Enhanced Performance in Nanoporous Electrical Double Layer Capacitors: Insights on Micropore Structure and Electrolyte Composition from Molecular Simulations. ACS APPLIED MATERIALS & INTERFACES 2022; 14:16800-16808. [PMID: 35377144 DOI: 10.1021/acsami.1c24088] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
We explore the effect of solvation and micropore structure on the energy storage performance of electrical double layer capacitors using constant potential molecular dynamics simulations of realistically modeled nanoporous carbon electrodes and ionic liquid/organic solvent mixtures. We show that the time-dependent charging profiles of electrodes with larger pores reach the plateau regime faster, while the charging time has a nonmonotonic dependence on ion concentration, mirroring the composition dependence of bulk electrolyte conductivity. When the average pore size of the electrode is similar to or slightly larger than the size of a solvated ion, the solvation enhances ion electrosorption into nanopores by disrupting anion-cation coordination and decreasing the barrier to counterion penetration while blocking the co-ions. In these systems, areal capacitance exhibits a significant nonmonotonic dependence on ion concentration, in which capacitance increases with the introduction of solvent in the concentrated regime followed by a decrease with further dilution. This gives rise to a maximum in capacitance at intermediate dilution levels. When pores are significantly larger than solvated ions, capacitance maximum weakens and eventually disappears. These findings provide novel insights on the combined effect of electrolyte composition and electrode pore size on the charging kinetics and equilibrium behavior of realistically modeled electrical double layer capacitors. Generalization of the approach developed here can facilitate the rational optimization of material properties for electrical double layer capacitor applications.
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Affiliation(s)
- Betul Uralcan
- Department of Chemical Engineering and Polymer Research Center, Bogazici University, Bebek 34342, Istanbul, Turkey
| | - Irem Beyza Uralcan
- Department of Physics, Bogazici University, Bebek 34342, Istanbul, Turkey
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11
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Moreno-Fernández G, Mysyk R, Díez N, Carriazo D, López del Amo JM. Ion transport from water-in-salt electrolyte through porosity of hierarchical porous carbons unraveled by solid-state NMR. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2021.139716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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12
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Gao Q, Tsai W, Balke N. In situ and operando force‐based atomic force microscopy for probing local functionality in energy storage materials. ELECTROCHEMICAL SCIENCE ADVANCES 2021. [DOI: 10.1002/elsa.202100038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Affiliation(s)
- Qiang Gao
- Department of Chemistry University of Wisconsin‐Madison Madison Wisconsin USA
| | - Wan‐Yu Tsai
- Chemical Science Division Oak Ridge National Laboratory Oak Ridge Tennessee USA
| | - Nina Balke
- Center for Nanophase Materials Sciences Oak Ridge National Laboratory Oak Ridge Tennessee USA
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13
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Zheng G, Gao X, Xing Z, Hong H, Ju Z. Tremella‐shaped TiCN Nanosheets as Anode mAterials of Lithium‐Ion Batteries. ChemistrySelect 2020. [DOI: 10.1002/slct.202002957] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Guojun Zheng
- School of mAterials and Physics China University of Mining and Technology Xuzhou Jiangsu 221116 P. R. China
| | - Xinran Gao
- School of mAterials and Physics China University of Mining and Technology Xuzhou Jiangsu 221116 P. R. China
| | - Zheng Xing
- School of mAterials and Physics China University of Mining and Technology Xuzhou Jiangsu 221116 P. R. China
| | - Haiping Hong
- Department of Electrical Engineering South Dakota School of Mines and Technology Rapid City, SD 57701 USA
| | - Zhicheng Ju
- School of mAterials and Physics China University of Mining and Technology Xuzhou Jiangsu 221116 P. R. China
- Institute of Coal Chemistry Chinese Academy of Sciences Taiyuan 030001 China
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14
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Fitting the porous texture of carbon electrodes to a binary ionic liquid electrolyte for the realization of low temperature EDLCs. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.136416] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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15
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Liu S, Walton M, Tarakina NV, Akcora P. Solvation in Ionic Liquids with Polymer-Grafted Nanoparticles. J Phys Chem B 2020; 124:4843-4850. [DOI: 10.1021/acs.jpcb.0c02813] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Siqi Liu
- Department of Chemical Engineering & Materials Science, Stevens Institute of Technology Hoboken, New Jersey 07030, United States
| | - Mia Walton
- Department of Chemical Engineering & Materials Science, Stevens Institute of Technology Hoboken, New Jersey 07030, United States
| | - Nadezda V. Tarakina
- Department of Colloid Chemistry, Max Planck Institute of Colloids and Interfaces Research Campus Golm, Potsdam 14476, Germany
| | - Pinar Akcora
- Department of Chemical Engineering & Materials Science, Stevens Institute of Technology Hoboken, New Jersey 07030, United States
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16
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Wang YP, Ren K, Liu S. The joint effect of surface polarity and concentration on the structure and dynamics of acetonitrile solution: a molecular dynamics simulation study. Phys Chem Chem Phys 2020; 22:10322-10334. [PMID: 32363373 DOI: 10.1039/d0cp00819b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The interfacial properties of the acetonitrile (ACN)-water-silica interface have great implications in both liquid chromatography and heterogeneous catalysis. We have performed molecular dynamics (MD) simulations of ACN and water binary solutions to give a comprehensive study of the collective effect of silica surface polarity and ACN concentration on interfacial structures and dynamics by tuning both surface charges and ACN concentration. MD simulation results indicate that many properties in the liquid-solid interface region undergo a monotonic change as the silica surface is tuned from polar to apolar due to the weakening of hydrogen bonding, while their dependence on ACN concentration is presumably governed by the preferential adsorption of water at the silica surface over ACN. However, at apolar surfaces, the interfacial structures of both water and ACN behave like the liquid-vapor interface, and this resemblance leads to an enrichment of ACN at the interface as well as accelerated dynamics, which is very different from that in the bulk solution. The organization of ACN molecules at both polar and apolar surfaces can be attributed to the amphiphilic nature of ACN, by which the micro-heterogeneity domain formed can persist both in the bulk and at the liquid-solid interface. Moreover, extending diffusion analysis to the second layer of the interface shows that the interfacial transport pathways at polar surfaces are likely very different from that of apolar surfaces. These simulation results give a full spectrum description of the ACN/water liquid-solid interface at the microscopic level and will be helpful for explaining related spectroscopic experiments and understanding the microscopic mechanisms of separation protocols in current chromatography applications.
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Affiliation(s)
- Yong-Peng Wang
- School of Materials Science and Engineering, Key Laboratory for Polymeric Composite & Functional Materials of Ministry of Education, Sun Yat-sen University, Guangzhou 510275, P. R. China.
| | - Kezhou Ren
- School of Materials Science and Engineering, Key Laboratory for Polymeric Composite & Functional Materials of Ministry of Education, Sun Yat-sen University, Guangzhou 510275, P. R. China.
| | - Shule Liu
- School of Materials Science and Engineering, Key Laboratory for Polymeric Composite & Functional Materials of Ministry of Education, Sun Yat-sen University, Guangzhou 510275, P. R. China.
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17
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Mo T, Bi S, Zhang Y, Presser V, Wang X, Gogotsi Y, Feng G. Ion Structure Transition Enhances Charging Dynamics in Subnanometer Pores. ACS NANO 2020; 14:2395-2403. [PMID: 31999427 DOI: 10.1021/acsnano.9b09648] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Using electrodes with subnanometer pores and ionic liquid electrolytes can improve the charge storage capacity at the expense of the charging rate. The fundamental understanding of the charging dynamics of nanoporous electrodes can help to avoid compromising the power density. In this work, we performed molecular dynamics simulations to reveal the charging mechanism of subnanometer pores in ionic liquids. Different from the traditional view that a smaller pore results in slower charging, a non-monotonic relation is found between the charging rate and pore size, in which the charging process is accelerated in some subnanometer pores. Our analysis uncovers that the mechanism of the charging enhancement can be attributed to the transition of in-pore ion structure.
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Affiliation(s)
- Tangming Mo
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering , Huazhong University of Science and Technology (HUST) , Wuhan 430074 , China
- Nano Interface Centre for Energy, School of Energy and Power Engineering , Huazhong University of Science and Technology , Wuhan 430074 , China
| | - Sheng Bi
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering , Huazhong University of Science and Technology (HUST) , Wuhan 430074 , China
- Nano Interface Centre for Energy, School of Energy and Power Engineering , Huazhong University of Science and Technology , Wuhan 430074 , China
| | - Yuan Zhang
- INM - Leibniz Institute for New Materials , Campus D2 2 , 66123 Saarbrücken , Germany
- Department of Materials Science and Engineering , Saarland University , 66123 Saarbrücken , Germany
| | - Volker Presser
- INM - Leibniz Institute for New Materials , Campus D2 2 , 66123 Saarbrücken , Germany
- Department of Materials Science and Engineering , Saarland University , 66123 Saarbrücken , Germany
| | - Xuehang Wang
- Department of Materials Science and Engineering, A. J. Drexel Nanomaterials Institute , Drexel University , Philadelphia , Pennsylvania 19104 , United States
| | - Yury Gogotsi
- Department of Materials Science and Engineering, A. J. Drexel Nanomaterials Institute , Drexel University , Philadelphia , Pennsylvania 19104 , United States
| | - Guang Feng
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering , Huazhong University of Science and Technology (HUST) , Wuhan 430074 , China
- Nano Interface Centre for Energy, School of Energy and Power Engineering , Huazhong University of Science and Technology , Wuhan 430074 , China
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18
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Shao H, Wu YC, Lin Z, Taberna PL, Simon P. Nanoporous carbon for electrochemical capacitive energy storage. Chem Soc Rev 2020; 49:3005-3039. [DOI: 10.1039/d0cs00059k] [Citation(s) in RCA: 213] [Impact Index Per Article: 53.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
This review summarizes the recent advances of nanoporous carbon materials in the application of EDLCs, including a better understanding of the charge storage mechanisms by combining the advanced techniques and simulations methods.
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Affiliation(s)
- Hui Shao
- Université Paul Sabatier
- CIRIMAT UMR CNRS 5085
- 31062 Toulouse
- France
- Réseau sur le Stockage Electrochimique de l'Energie (RS2E)
| | - Yih-Chyng Wu
- Université Paul Sabatier
- CIRIMAT UMR CNRS 5085
- 31062 Toulouse
- France
- Réseau sur le Stockage Electrochimique de l'Energie (RS2E)
| | - Zifeng Lin
- College of Materials Science and Engineering
- Sichuan University
- Chengdu 610065
- P. R. China
| | - Pierre-Louis Taberna
- Université Paul Sabatier
- CIRIMAT UMR CNRS 5085
- 31062 Toulouse
- France
- Réseau sur le Stockage Electrochimique de l'Energie (RS2E)
| | - Patrice Simon
- Université Paul Sabatier
- CIRIMAT UMR CNRS 5085
- 31062 Toulouse
- France
- Réseau sur le Stockage Electrochimique de l'Energie (RS2E)
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19
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Liu S, Liedel C, Tarakina NV, Osti NC, Akcora P. Dynamics of ionic liquids in the presence of polymer-grafted nanoparticles. NANOSCALE 2019; 11:19832-19841. [PMID: 31368472 DOI: 10.1039/c9nr04204k] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We incorporated polymer-grafted nanoparticles into ionic and zwitterionic liquids to explore the solvation and confinement effects on their heterogeneous dynamics using quasi-elastic neutron scattering (QENS). 1-Hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (HMIM-TFSI) mixed with deuterated poly(methyl methacrylate) (d-PMMA)-grafted nanoparticles is studied to unravel how dynamic coupling between PMMA and HMIM-TFSI influence the fast and slow diffusion characteristics of the HMIM+ cations. The zwitterionic liquid, 1-butyl-3-methyl imidazole-2-ylidene borane (BMIM-BH3) is critically selected and mixed with PMMA-grafted nanoparticles for comparison in this work as its ions do not self-dissociate and it does not couple with PMMA through ion-dipole interactions as HMIM-TFSI does. We find that long-range unrestricted diffusion of HMIM+ cations is higher in well-dispersed particles than in aggregated particle systems, whereas the localized diffusion of HMIM+ is measured to be higher in close-packed particles. Translational diffusion dynamics of BMIM-BH3 is not influenced by any particle structures suggesting that zwitterions do not interact with PMMA. This difference between two ionic liquid types enables us to decouple polymer effects from the diffusion of ionic liquids, which is integral to understand the ionic transport mechanism in ionic liquids confined in polymer-grafted nanoparticle electrolytes.
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Affiliation(s)
- Siqi Liu
- Department of Chemical Engineering & Materials Science, Stevens Institute of Technology, Hoboken, NJ 07030, USA.
| | - Clemens Liedel
- Department of Colloid Chemistry, Max Planck Institute of Colloids and Interfaces, Research Campus Golm, Potsdam 14476, Germany
| | - Nadezda V Tarakina
- Department of Colloid Chemistry, Max Planck Institute of Colloids and Interfaces, Research Campus Golm, Potsdam 14476, Germany
| | - Naresh C Osti
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - Pinar Akcora
- Department of Chemical Engineering & Materials Science, Stevens Institute of Technology, Hoboken, NJ 07030, USA.
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20
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Pal B, Yang S, Ramesh S, Thangadurai V, Jose R. Electrolyte selection for supercapacitive devices: a critical review. NANOSCALE ADVANCES 2019; 1:3807-3835. [PMID: 36132093 PMCID: PMC9417677 DOI: 10.1039/c9na00374f] [Citation(s) in RCA: 169] [Impact Index Per Article: 33.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 08/20/2019] [Indexed: 05/03/2023]
Abstract
Electrolytes are one of the vital constituents of electrochemical energy storage devices and their physical and chemical properties play an important role in these devices' performance, including capacity, power density, rate performance, cyclability and safety. This article reviews the current state of understanding of the electrode-electrolyte interaction in supercapacitors and battery-supercapacitor hybrid devices. The article discusses factors that affect the overall performance of the devices such as the ionic conductivity, mobility, diffusion coefficient, radius of bare and hydrated spheres, ion solvation, viscosity, dielectric constant, electrochemical stability, thermal stability and dispersion interaction. The requirements needed to design better electrolytes and the challenges that still need to be addressed for building better supercapacitive devices for the competitive energy storage market have also been highlighted.
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Affiliation(s)
- Bhupender Pal
- Nanostructured Renewable Energy Materials Laboratory, Faculty of Industrial Sciences and Technology, Universiti Malaysia Pahang 26300 Gambang Kuantan Malaysia
| | - Shengyuan Yang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, International Joint Laboratory for Advanced Fiber and Low-dimension Materials, College of Materials Science and Engineering, Donghua University Shanghai 201620 P. R. China
| | - Subramaniam Ramesh
- Centre for Ionics University of Malaya, Department of Physics, Faculty of Science, University of Malaya 50603 Kuala Lumpur Malaysia
| | | | - Rajan Jose
- Nanostructured Renewable Energy Materials Laboratory, Faculty of Industrial Sciences and Technology, Universiti Malaysia Pahang 26300 Gambang Kuantan Malaysia
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21
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Effect of alkali and halide ion doping on the energy storage characteristics of ionic liquid based supercapacitors. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.06.176] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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22
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Bis(oxalate)borate-containing electrolytes for high voltage electric double-layer capacitors: A comparative study. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.134649] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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23
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Liu C, Wu JC, Zhou H, Liu M, Zhang D, Li S, Gao H, Yang J. Great Enhancement of Carbon Energy Storage through Narrow Pores and Hydrogen-Containing Functional Groups for Aqueous Zn-Ion Hybrid Supercapacitor. Molecules 2019; 24:molecules24142589. [PMID: 31315294 PMCID: PMC6680928 DOI: 10.3390/molecules24142589] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2019] [Revised: 07/15/2019] [Accepted: 07/15/2019] [Indexed: 11/16/2022] Open
Abstract
The proton transfer mechanism on the carbon cathode surface has been considered as an effective way to boost the electrochemical performance of Zn-ion hybrid supercapacitors (SCs) with both ionic liquid and organic electrolytes. However, cheaper, potentially safer, and more environmental friendly supercapacitor can be achieved by using aqueous electrolyte. Herein, we introduce the proton transfer mechanism into a Zn-ion hybrid supercapacitor with the ZnSO4 aqueous electrolyte and functionalized activated carbon cathode materials (FACs). We reveal both experimentally and theoretically an enhanced performance by controlling the micropores structure and hydrogen-containing functional groups (-OH and -NH functions) of the activated carbon materials. The Zn-ion SCs with FACs exhibit a high capacitance of 435 F g-1 and good stability with 89% capacity retention over 10,000 cycles. Moreover, the proton transfer effect can be further enhanced by introducing extra hydrogen ions in the electrolyte with low pH value. The highest capacitance of 544 F g-1 is obtained at pH = 3. The proton transfer process tends to take place preferentially on the hydroxyl-groups based on the density functional theory (DFT) calculation. The results would help to develop carbon materials for cheaper and safer Zn-ion hybrid SCs with higher energy.
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Affiliation(s)
- Chao Liu
- School of Material Science and Engineering, Jiangsu University, 301, Xuefu Road, Zhenjiang, Jiangsu 212013, China
| | - Jian-Chun Wu
- School of Material Science and Engineering, Jiangsu University, 301, Xuefu Road, Zhenjiang, Jiangsu 212013, China
| | - Haitao Zhou
- School of Material Science and Engineering, Jiangsu University, 301, Xuefu Road, Zhenjiang, Jiangsu 212013, China.
| | - Menghao Liu
- School of Material Science and Engineering, Jiangsu University, 301, Xuefu Road, Zhenjiang, Jiangsu 212013, China
| | - Dong Zhang
- School of Material Science and Engineering, Jiangsu University, 301, Xuefu Road, Zhenjiang, Jiangsu 212013, China
| | - Shilin Li
- School of Material Science and Engineering, Jiangsu University, 301, Xuefu Road, Zhenjiang, Jiangsu 212013, China
| | - Hongquan Gao
- School of Material Science and Engineering, Jiangsu University, 301, Xuefu Road, Zhenjiang, Jiangsu 212013, China
| | - Jianhong Yang
- School of Material Science and Engineering, Jiangsu University, 301, Xuefu Road, Zhenjiang, Jiangsu 212013, China.
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24
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Wang Y, Wang C, Zhang Y, Huo F, He H, Zhang S. Molecular Insights into the Regulatable Interfacial Property and Flow Behavior of Confined Ionic Liquids in Graphene Nanochannels. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1804508. [PMID: 30680916 DOI: 10.1002/smll.201804508] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Revised: 12/06/2018] [Indexed: 06/09/2023]
Abstract
The understanding of confined structure and flow property of ionic liquid (IL) in a nanochannel are essential for the efficient application of ILs in the green chemical processes. In this work, the ionic structure and various flow behaviors of ILs inside graphene nanochannels via molecular dynamics simulations are shown. The effect of the nanochannel structure on confined flow is explored, showing that the width mainly heightens the viscosity while the oxidation degree primarily enhances the interfacial friction coefficient. Tuning the width and oxidation degree of nanochannel, three different flow behaviors including Poiseuille, partial plunger and full plunger flow can be achieved, where the second one does not occur in water or other organic solvents. To describe the special flow behavior, an effective influence extent of the nanochannel (w EIE ) is defined, whose value can distinguish the above flows effectively. Based on w EIE , the phase diagrams of flow behavior for the nanochannel structure and pressure gradient are obtained, showing that the critical pressure gradient decreases with width and increases with the oxidation degree. Based on the quantitative relations between confined structures, viscosity, friction coefficient, flow behavior, and nanochannel structure, the intrinsic mechanism of regulating the flow behavior and rational design of nanochannel are finally discussed.
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Affiliation(s)
- Yanlei Wang
- Beijing Key Laboratory of Ionic Liquids Clean Process, CAS Key Laboratory of Green Process and Engineering, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
| | - Chenlu Wang
- Beijing Key Laboratory of Ionic Liquids Clean Process, CAS Key Laboratory of Green Process and Engineering, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
| | - Yaqin Zhang
- Beijing Key Laboratory of Ionic Liquids Clean Process, CAS Key Laboratory of Green Process and Engineering, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
| | - Feng Huo
- Beijing Key Laboratory of Ionic Liquids Clean Process, CAS Key Laboratory of Green Process and Engineering, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
| | - Hongyan He
- Beijing Key Laboratory of Ionic Liquids Clean Process, CAS Key Laboratory of Green Process and Engineering, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
| | - Suojiang Zhang
- Beijing Key Laboratory of Ionic Liquids Clean Process, CAS Key Laboratory of Green Process and Engineering, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
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25
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Wang C, Wang Y, Lu Y, He H, Huo F, Dong K, Wei N, Zhang S. Height-driven structure and thermodynamic properties of confined ionic liquids inside carbon nanochannels from molecular dynamics study. Phys Chem Chem Phys 2019; 21:12767-12776. [PMID: 31020276 DOI: 10.1039/c9cp00732f] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Understanding the structural transition of ionic liquids (ILs) confined in a nanospace is imperative for the application of ILs in energy storage, gas separation, and other chemical engineering techniques. In this work, the quantitative relations between the properties and height of the nanochannel (H) for the ([Emim]+[TF2N]-) IL are explored through molecular dynamics simulations. Interestingly, the entropy of the confined IL exhibits a nonmonotonic behavior as H increases: initially increasing for H < 1.0 nm and then decreasing for 1.0 < H < 1.1 nm, followed by increasing again for H > 1.1 nm; it finally approaches that of liquid bulk ILs. The vibrational spectrum of the confined IL is analyzed to investigate the nature of nonmonotonic entropy, showing that the liquidity and partial solidity will be respectively attenuated and enhanced as H decreases from 5.0 to 0.75 nm. Moreover, the hydrogen bond (HB) network and external force are also calculated, showing similar nonmonotonic behaviors when compared with the thermodynamic properties. The entropy gain of the confined IL originates from the reduced HB interactions, weaker external force, and partial solid nature, where more phase space sampling for ILs inside a bilayer graphene nanochannel (BLGC) can be achieved. All the above relations demonstrate that there exists a critical height of the nanochannel (HCR = 1.0 nm) at which the confined IL possesses weaker HB interaction, higher entropy, and better stability. The critical height of the nanochannel is also identified in the analysis of the local structures of cation head groups and anions, indicating that the confined IL could have a faster in-plane diffusive ability. These factors can serve as key indicators in quantitatively characterizing the mechanism for the structural transition of ILs inside a nanochannel and facilitate the rational design of nanopores and nanochannels to regulate the properties and structures of ILs in practical application scenarios.
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Affiliation(s)
- Chenlu Wang
- Beijing Key Laboratory of Ionic Liquids Clean Process, CAS Key Laboratory of Green Process and Engineering, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, People's Republic of China. and Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment and Technology, Jiangnan University, Wuxi 214122, People's Republic of China.
| | - Yanlei Wang
- Beijing Key Laboratory of Ionic Liquids Clean Process, CAS Key Laboratory of Green Process and Engineering, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.
| | - Yumiao Lu
- Beijing Key Laboratory of Ionic Liquids Clean Process, CAS Key Laboratory of Green Process and Engineering, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.
| | - Hongyan He
- Beijing Key Laboratory of Ionic Liquids Clean Process, CAS Key Laboratory of Green Process and Engineering, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.
| | - Feng Huo
- Beijing Key Laboratory of Ionic Liquids Clean Process, CAS Key Laboratory of Green Process and Engineering, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.
| | - Kun Dong
- Beijing Key Laboratory of Ionic Liquids Clean Process, CAS Key Laboratory of Green Process and Engineering, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.
| | - Ning Wei
- Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment and Technology, Jiangnan University, Wuxi 214122, People's Republic of China.
| | - Suojiang Zhang
- Beijing Key Laboratory of Ionic Liquids Clean Process, CAS Key Laboratory of Green Process and Engineering, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.
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26
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Xu J, Wang X, Zhou X, Yuan N, Ge S, Ding J. Activated carbon coated CNT core-shell nanocomposite for supercapacitor electrode with excellent rate performance at low temperature. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.02.021] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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27
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Liu L, Wang X, Izotov V, Havrykov D, Koltsov I, Han W, Zozulya Y, Linyucheva O, Zahorodna V, Gogotsi O, Gogotsi Y. Capacitance of coarse-grained carbon electrodes with thickness up to 800 μm. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.02.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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28
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Banda H, Périé S, Daffos B, Taberna PL, Dubois L, Crosnier O, Simon P, Lee D, De Paëpe G, Duclairoir F. Sparsely Pillared Graphene Materials for High-Performance Supercapacitors: Improving Ion Transport and Storage Capacity. ACS NANO 2019; 13:1443-1453. [PMID: 30642165 PMCID: PMC6961951 DOI: 10.1021/acsnano.8b07102] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Accepted: 01/14/2019] [Indexed: 05/20/2023]
Abstract
Graphene-based materials are extensively studied as promising candidates for supercapacitors (SCs) owing to the high surface area, electrical conductivity, and mechanical flexibility of graphene. Reduced graphene oxide (RGO), a close graphene-like material studied for SCs, offers limited specific capacitances (100 F·g-1) as the reduced graphene sheets partially restack through π-π interactions. This paper presents pillared graphene materials designed to minimize such graphitic restacking by cross-linking the graphene sheets with a bifunctional pillar molecule. Solid-state NMR, X-ray diffraction, and electrochemical analyses reveal that the synthesized materials possess covalently cross-linked graphene galleries that offer additional sites for ion sorption in SCs. Indeed, high specific capacitances in SCs are observed for the graphene materials synthesized with an optimized number of pillars. Specifically, the straightforward synthesis of a graphene hydrogel containing pillared structures and an interconnected porous network delivered a material with gravimetric capacitances two times greater than that of RGO (200 F·g-1 vs 107 F·g-1) and volumetric capacitances that are nearly four times larger (210 F·cm-3 vs 54 F·cm-3). Additionally, despite the presence of pillars inside the graphene galleries, the optimized materials show efficient ion transport characteristics. This work therefore brings perspectives for the next generation of high-performance SCs.
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Affiliation(s)
- Harish Banda
- Université
Grenoble Alpes, CEA, CNRS, INAC, Grenoble 38000, France
| | - Sandy Périé
- Université
Grenoble Alpes, CEA, CNRS, INAC, Grenoble 38000, France
| | - Barbara Daffos
- CIRIMAT, Université de Toulouse,
CNRS, INPT, UPS, Toulouse 31062, France
- Réseau
sur le Stockage Electrochimique de l’Energie (RS2E), CNRS FR3459, Amiens 80039, France
| | - Pierre-Louis Taberna
- CIRIMAT, Université de Toulouse,
CNRS, INPT, UPS, Toulouse 31062, France
- Réseau
sur le Stockage Electrochimique de l’Energie (RS2E), CNRS FR3459, Amiens 80039, France
| | - Lionel Dubois
- Université
Grenoble Alpes, CEA, CNRS, INAC, Grenoble 38000, France
| | - Olivier Crosnier
- Institut
des Matériaux Jean Rouxel (IMN), Université de Nantes, CNRS, Nantes 44300, France
- Réseau
sur le Stockage Electrochimique de l’Energie (RS2E), CNRS FR3459, Amiens 80039, France
| | - Patrice Simon
- CIRIMAT, Université de Toulouse,
CNRS, INPT, UPS, Toulouse 31062, France
- Réseau
sur le Stockage Electrochimique de l’Energie (RS2E), CNRS FR3459, Amiens 80039, France
| | - Daniel Lee
- Université
Grenoble Alpes, CEA, CNRS, INAC, Grenoble 38000, France
| | - Gaël De Paëpe
- Université
Grenoble Alpes, CEA, CNRS, INAC, Grenoble 38000, France
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29
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Mizera A, Grabowski SJ, Ławniczak P, Wysocka-Żołopa M, Dubis AT, Łapiński A. A study of the optical, electrical and structural properties of poly(pyrrole-3,4-dicarboxylic acid). POLYMER 2019. [DOI: 10.1016/j.polymer.2018.12.056] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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30
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Investigation of ion transport in chemically tuned pillared graphene materials through electrochemical impedance analysis. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2018.11.122] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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31
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Scalia A, Varzi A, Moretti A, Ruschhaupt P, Lamberti A, Tresso E, Passerini S. Electrolytes based on N-Butyl-N-Methyl-Pyrrolidinium 4,5-Dicyano-2-(Trifluoromethyl) Imidazole for High Voltage Electrochemical Double Layer Capacitors. ChemElectroChem 2019. [DOI: 10.1002/celc.201801172] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Alberto Scalia
- Helmholtz Institute Ulm (HIU); Helmholtzstrasse 11 89081 Ulm Germany
- Karlsruhe Institute of Technology (KIT); P.O. Box 3640 76021 Karlsruhe Germany
- Department of Applied Science and Technology - DISAT Politecnico di Torino; Corso Duca degli Abruzzi 24 10129 Torino Italy
| | - Alberto Varzi
- Helmholtz Institute Ulm (HIU); Helmholtzstrasse 11 89081 Ulm Germany
- Karlsruhe Institute of Technology (KIT); P.O. Box 3640 76021 Karlsruhe Germany
| | - Arianna Moretti
- Helmholtz Institute Ulm (HIU); Helmholtzstrasse 11 89081 Ulm Germany
- Karlsruhe Institute of Technology (KIT); P.O. Box 3640 76021 Karlsruhe Germany
| | - Peter Ruschhaupt
- Helmholtz Institute Ulm (HIU); Helmholtzstrasse 11 89081 Ulm Germany
- Karlsruhe Institute of Technology (KIT); P.O. Box 3640 76021 Karlsruhe Germany
| | - Andrea Lamberti
- Department of Applied Science and Technology - DISAT Politecnico di Torino; Corso Duca degli Abruzzi 24 10129 Torino Italy
| | - Elena Tresso
- Department of Applied Science and Technology - DISAT Politecnico di Torino; Corso Duca degli Abruzzi 24 10129 Torino Italy
| | - Stefano Passerini
- Helmholtz Institute Ulm (HIU); Helmholtzstrasse 11 89081 Ulm Germany
- Karlsruhe Institute of Technology (KIT); P.O. Box 3640 76021 Karlsruhe Germany
- Department of Applied Science and Technology - DISAT Politecnico di Torino; Corso Duca degli Abruzzi 24 10129 Torino Italy
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32
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Ali BA, Allam NK. A first-principles roadmap and limits to design efficient supercapacitor electrode materials. Phys Chem Chem Phys 2019; 21:17494-17511. [DOI: 10.1039/c9cp02614b] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A road map to guide researchers to predict the desired properties is presented based on the DFT calculations to allow researchers decide which property of the material they wish to predict or develop and how to choose the proper DFT route to do so.
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Affiliation(s)
- Basant A. Ali
- Energy Materials Laboratory
- School of Sciences and Engineering
- The American University in Cairo
- New Cairo 11835
- Egypt
| | - Nageh K. Allam
- Energy Materials Laboratory
- School of Sciences and Engineering
- The American University in Cairo
- New Cairo 11835
- Egypt
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33
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Wang X, Mehandzhiyski AY, Arstad B, Van Aken KL, Mathis TS, Gallegos A, Tian Z, Ren D, Sheridan E, Grimes BA, Jiang DE, Wu J, Gogotsi Y, Chen D. Selective Charging Behavior in an Ionic Mixture Electrolyte-Supercapacitor System for Higher Energy and Power. J Am Chem Soc 2017; 139:18681-18687. [PMID: 29185334 DOI: 10.1021/jacs.7b10693] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Ion-ion interactions in supercapacitor (SC) electrolytes are considered to have significant influence over the charging process and therefore the overall performance of the SC system. Current strategies used to weaken ionic interactions can enhance the power of SCs, but consequently, the energy density will decrease due to the increased distance between adjacent electrolyte ions at the electrode surface. Herein, we report on the simultaneous enhancement of the power and energy densities of a SC using an ionic mixture electrolyte with different types of ionic interactions. Two types of cations with stronger ionic interactions can be packed in a denser arrangement in mesopores to increase the capacitance, whereas only cations with weaker ionic interactions are allowed to enter micropores without sacrificing the power density. This unique selective charging behavior in different confined porous structure was investigated by solid-state nuclear magnetic resonance experiments and further confirmed theoretically by both density functional theory and molecular dynamics simulations. Our results offer a distinct insight into pairing ionic mixture electrolytes with materials with confined porous characteristics and further propose that it is possible to control the charging process resulting in comprehensive enhancements in SC performance.
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Affiliation(s)
- Xuehang Wang
- Department of Chemical Engineering, Norwegian University of Science and Technology , 7491 Trondheim, Norway.,Department of Materials Science and Engineering and A. J. Drexel Nanomaterials Institute, Drexel University , Philadelphia, Pennsylvania 19104, United States
| | | | - Bjørnar Arstad
- SINTEF Materials and Chemistry, Blindern , 0314 Oslo, Norway
| | - Katherine L Van Aken
- Department of Materials Science and Engineering and A. J. Drexel Nanomaterials Institute, Drexel University , Philadelphia, Pennsylvania 19104, United States
| | - Tyler S Mathis
- Department of Materials Science and Engineering and A. J. Drexel Nanomaterials Institute, Drexel University , Philadelphia, Pennsylvania 19104, United States
| | | | | | - Dingding Ren
- Department of Electronic Systems, Norwegian University of Science and Technology , 7491 Trondheim, Norway
| | - Edel Sheridan
- SINTEF Materials and Chemistry , 7491 Trondheim, Norway
| | - Brian Arthur Grimes
- Department of Chemical Engineering, Norwegian University of Science and Technology , 7491 Trondheim, Norway
| | | | | | - Yury Gogotsi
- Department of Materials Science and Engineering and A. J. Drexel Nanomaterials Institute, Drexel University , Philadelphia, Pennsylvania 19104, United States
| | - De Chen
- Department of Chemical Engineering, Norwegian University of Science and Technology , 7491 Trondheim, Norway
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34
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Futamura R, Iiyama T, Takasaki Y, Gogotsi Y, Biggs MJ, Salanne M, Ségalini J, Simon P, Kaneko K. Partial breaking of the Coulombic ordering of ionic liquids confined in carbon nanopores. NATURE MATERIALS 2017; 16:1225-1232. [PMID: 28920938 PMCID: PMC5702543 DOI: 10.1038/nmat4974] [Citation(s) in RCA: 121] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Accepted: 07/25/2017] [Indexed: 05/20/2023]
Abstract
Ionic liquids are composed of equal quantities of positive and negative ions. In the bulk, electrical neutrality occurs in these liquids due to Coulombic ordering, in which ion shells of alternating charge form around a central ion. Their structure under confinement is far less well understood. This hinders the widespread application of ionic liquids in technological applications. Here we use scattering experiments to resolve the structure of a widely used ionic liquid (EMI-TFSI) when it is confined inside nanoporous carbons. We show that Coulombic ordering reduces when the pores can accommodate only a single layer of ions. Instead, equally charged ion pairs are formed due to the induction of an electric potential of opposite sign in the carbon pore walls. This non-Coulombic ordering is further enhanced in the presence of an applied external electric potential. This finding opens the door for the design of better materials for electrochemical applications.
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Affiliation(s)
- Ryusuke Futamura
- Center for Energy and Environmental Science, Shinshu University,
4-17-1, Wakasato, Nagano-City, 380-8553, Japan
| | - Taku Iiyama
- Center for Energy and Environmental Science, Shinshu University,
4-17-1, Wakasato, Nagano-City, 380-8553, Japan
- Faculty of Science, Department of Chemistry, Shinshu University,
3-1-1, Asahi, Matsumoto-City, 390-8621, Japan
| | - Yuma Takasaki
- Faculty of Science, Department of Chemistry, Shinshu University,
3-1-1, Asahi, Matsumoto-City, 390-8621, Japan
| | - Yury Gogotsi
- Center for Energy and Environmental Science, Shinshu University,
4-17-1, Wakasato, Nagano-City, 380-8553, Japan
- Department of Material Science and Engineering, and A.J. Drexel
Nanomaterials Institute, Drexel University, 3141 Chestnut Street Philadelphia,
Pennsylvania 19104, USA
| | - Mark J. Biggs
- School of Science, Loughborough University, Leicestershire, LE11
3TU, UK
- School of Chemical Engineering, The University of Adelaide,
Adelaide, 5005 Australia
| | - Mathieu Salanne
- Sorbonne Universités, UPMC Univ. Paris 06, CNRS, Laboratoire
PHENIX, F-75005 Paris, France
- Réseau sur le Stockage Electrochimique de l’Energie,
RS2E FR CNRS 3459
| | - Julie Ségalini
- Université Paul Sabatier, CIRIMAT UMR, CNRS 5085, 5085, 118
route de Narbonne, 31062 Toulouse Cedex 4, France
| | - Patrice Simon
- Center for Energy and Environmental Science, Shinshu University,
4-17-1, Wakasato, Nagano-City, 380-8553, Japan
- Réseau sur le Stockage Electrochimique de l’Energie,
RS2E FR CNRS 3459
- Université Paul Sabatier, CIRIMAT UMR, CNRS 5085, 5085, 118
route de Narbonne, 31062 Toulouse Cedex 4, France
- Correspondence and requests for materials should be addressed to
K.K. () and P.S.
()
| | - Katsumi Kaneko
- Center for Energy and Environmental Science, Shinshu University,
4-17-1, Wakasato, Nagano-City, 380-8553, Japan
- Correspondence and requests for materials should be addressed to
K.K. () and P.S.
()
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35
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An Atomistic Carbide-Derived Carbon Model Generated Using ReaxFF-Based Quenched Molecular Dynamics. C — JOURNAL OF CARBON RESEARCH 2017. [DOI: 10.3390/c3040032] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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36
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Lee J, Srimuk P, Aristizabal K, Kim C, Choudhury S, Nah YC, Mücklich F, Presser V. Pseudocapacitive Desalination of Brackish Water and Seawater with Vanadium-Pentoxide-Decorated Multiwalled Carbon Nanotubes. CHEMSUSCHEM 2017; 10:3611-3623. [PMID: 28741864 DOI: 10.1002/cssc.201701215] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Indexed: 06/07/2023]
Abstract
A hybrid membrane pseudocapacitive deionization (MPDI) system consisting of a hydrated vanadium pentoxide (hV2 O5 )-decorated multi-walled carbon nanotube (MWCNT) electrode and one activated carbon electrode enables sodium ions to be removed by pseudocapacitive intercalation with the MWCNT-hV2 O5 electrode and chloride ion to be removed by non-faradaic electrosorption of the porous carbon electrode. The MWCNT-hV2 O5 electrode was synthesized by electrochemical deposition of hydrated vanadium pentoxide on the MWCNT paper. The stable electrochemical operating window for the MWCNT-hV2 O5 electrode was between -0.5 V and +0.4 V versus Ag/AgCl, which provided a specific capacity of 44 mAh g-1 (corresponding with 244 F g-1 ) in aqueous 1 m NaCl. The desalination performance of the MPDI system was investigated in aqueous 200 mm NaCl (brackish water) and 600 mm NaCl (seawater) solutions. With the aid of an anion and a cation exchange membrane, the MPDI hybrid cell was operated from -0.4 to +0.8 V cell voltage without crossing the reduction and oxidation potential limit of both electrodes. For the 600 mm NaCl solution, the NaCl salt adsorption capacity of the cell was 23.6±2.2 mg g-1 , which is equivalent to 35.7±3.3 mg g-1 normalized to the mass of the MWCNT-hV2 O5 electrode. Additionally, we propose a normalization method for the electrode material with faradaic reactions based on sodium uptake capacities.
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Affiliation(s)
- Juhan Lee
- Leibniz Institute for New Materials (INM), Campus D2 2, 66123, Saarbrücken, Germany
- Department of Materials Science and Engineering, Saarland University, Campus D2 2, 66123, Saarbrücken, Germany
| | - Pattarachai Srimuk
- Leibniz Institute for New Materials (INM), Campus D2 2, 66123, Saarbrücken, Germany
- Department of Materials Science and Engineering, Saarland University, Campus D2 2, 66123, Saarbrücken, Germany
| | - Katherine Aristizabal
- Department of Materials Science and Engineering, Saarland University, Campus D2 2, 66123, Saarbrücken, Germany
| | - Choonsoo Kim
- Leibniz Institute for New Materials (INM), Campus D2 2, 66123, Saarbrücken, Germany
| | - Soumyadip Choudhury
- Leibniz Institute for New Materials (INM), Campus D2 2, 66123, Saarbrücken, Germany
| | - Yoon-Chae Nah
- Interdisciplinary Program in Creative Engineering, School of Energy, Materials, and Chemical Engineering, Korea University of Technology and Education, 1600 Chungjeol-ro, Cheonan, 31253, Republic of Korea
| | - Frank Mücklich
- Department of Materials Science and Engineering, Saarland University, Campus D2 2, 66123, Saarbrücken, Germany
| | - Volker Presser
- Leibniz Institute for New Materials (INM), Campus D2 2, 66123, Saarbrücken, Germany
- Department of Materials Science and Engineering, Saarland University, Campus D2 2, 66123, Saarbrücken, Germany
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37
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Chen TH, Yang CH, Su CY, Lee TC, Dong QF, Chang JK. Electrolyte Engineering: Optimizing High-Rate Double-Layer Capacitances of Micropore- and Mesopore-Rich Activated Carbon. CHEMSUSCHEM 2017; 10:3534-3539. [PMID: 28834366 DOI: 10.1002/cssc.201701476] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Indexed: 06/07/2023]
Abstract
Various types of electrolyte cations as well as binary cations are used to optimize the capacitive performance of activated carbon (AC) with different pore structures. The high-rate capability of micropore-rich AC, governed by the mobility of desolvated cations, can outperform that of mesopore-rich AC, which essentially depends on the electrolyte conductivity.
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Affiliation(s)
- Ting-Hao Chen
- Institute of Materials Science and Engineering, National Central University, 300, Zhongda Rd., Zhongli District, Taoyuan City, 32001, Taiwan
| | - Cheng-Hsien Yang
- Institute of Materials Science and Engineering, National Central University, 300, Zhongda Rd., Zhongli District, Taoyuan City, 32001, Taiwan
| | - Ching-Yuan Su
- Department of Mechanical Engineering, National Central University, Taiwan
| | - Tai-Chou Lee
- Department of Chemical and Materials Engineering, National Central University, Taiwan
| | - Quan-Feng Dong
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Department of Chemistry, Xiamen University, P.R. China
| | - Jeng-Kuei Chang
- Institute of Materials Science and Engineering, National Central University, 300, Zhongda Rd., Zhongli District, Taoyuan City, 32001, Taiwan
- Department of Mechanical Engineering, National Central University, Taiwan
- Department of Chemical and Materials Engineering, National Central University, Taiwan
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38
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Osti NC, Van Aken KL, Thompson MW, Tiet F, Jiang DE, Cummings PT, Gogotsi Y, Mamontov E. Solvent Polarity Governs Ion Interactions and Transport in a Solvated Room-Temperature Ionic Liquid. J Phys Chem Lett 2017; 8:167-171. [PMID: 27966964 DOI: 10.1021/acs.jpclett.6b02587] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We explore the influence of the solvent dipole moment on cation-anion interactions and transport in 1-butyl-3-methyl-imidazolium bis(trifluoromethylsulfonyl), [BMIM+][Tf2N-]. Free energy profiles derived from atomistic molecular dynamics (MD) simulations show a correlation of the cation-anion separation and the equilibrium depth of the potential of mean force with the dipole moment of the solvent. Correlations of the ion diffusivity with the dipole moment and the concentration of the solvent were further demonstrated by classical MD simulations. Quasi-elastic neutron scattering experiments with deuterated solvents reveal a complex picture of nanophase separation into the ionic liquid-rich and solvent-rich phases. The experiment corroborates the trend of concentration- and dipole moment-dependent enhancement of ion mobility by the solvent, as suggested by the simulations. Despite the considerable structural complexity of ionic liquid-solvent mixtures, we can rationalize and generalize the trends governing ionic transport in these complex electrolytes.
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Affiliation(s)
- Naresh C Osti
- Chemical and Engineering Materials Division, Oak Ridge National Laboratory , PO Box 2008 MS6455, Oak Ridge, Tennessee 37831, United States
| | - Katherine L Van Aken
- Department of Materials Science and Engineering, and A. J. Drexel Nanomaterials Institute, Drexel University , 3141 Chestnut Street, Philadelphia, Pennsylvania 19104, United States
| | - Matthew W Thompson
- Department of Chemical and Biomolecular Engineering, Vanderbilt University , 2201 West End Avenue, Nashville, Tennessee 37235, United States
| | - Felix Tiet
- Department of Chemical and Biomolecular Engineering, Vanderbilt University , 2201 West End Avenue, Nashville, Tennessee 37235, United States
| | - De-En Jiang
- Department of Chemistry, University of California , 900 University Avenue, Riverside, California 92521, United States
| | - Peter T Cummings
- Department of Chemical and Biomolecular Engineering, Vanderbilt University , 2201 West End Avenue, Nashville, Tennessee 37235, United States
| | - Yury Gogotsi
- Department of Materials Science and Engineering, and A. J. Drexel Nanomaterials Institute, Drexel University , 3141 Chestnut Street, Philadelphia, Pennsylvania 19104, United States
| | - Eugene Mamontov
- Chemical and Engineering Materials Division, Oak Ridge National Laboratory , PO Box 2008 MS6455, Oak Ridge, Tennessee 37831, United States
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39
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Affiliation(s)
- Shiguo Zhang
- College
of Materials Science and Engineering, Hunan University, Changsha 410082, China
- Center for Green Chemistry and Catalysis, State Key Laboratory for Oxo Synthesis & Selective Oxidation, State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, No.18, Tianshui Middle Road, 730000 Lanzhou, China
| | - Jiaheng Zhang
- School
of Materials Science and Engineering, Harbin Institute of Technology, Shenzhen 518055, China
| | - Yan Zhang
- College
of Materials Science and Engineering, Hunan University, Changsha 410082, China
| | - Youquan Deng
- Center for Green Chemistry and Catalysis, State Key Laboratory for Oxo Synthesis & Selective Oxidation, State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, No.18, Tianshui Middle Road, 730000 Lanzhou, China
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40
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Dodevski V, Stojmenović M, Vujković M, Krstić J, Krstić S, Bajuk-Bogdanović D, Kuzmanović B, Kaluđerović B, Mentus S. Complex insight into the charge storage behavior of active carbons obtained by carbonization of the plane tree seed. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.10.182] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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41
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Fic K, Meller M, Menzel J, Frackowiak E. Around the thermodynamic limitations of supercapacitors operating in aqueous electrolytes. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.02.077] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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42
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Haskins JB, Wu JJ, Lawson JW. Computational and Experimental Study of Li-Doped Ionic Liquids at Electrified Interfaces. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2016; 120:11993-12011. [PMID: 33005284 PMCID: PMC7526643 DOI: 10.1021/acs.jpcc.6b02449] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
We evaluate the influence of Li-salt doping on the dynamics, capacitance, and structure of three ionic liquid electrolytes, [pyr14][TFSI], [pyr13][FSI], and [EMIM][BF4], using molecular dynamics and polarizable force fields. In this respect, our focus is on the properties of the electric double layer (EDL) formed by the electrolytes at the electrode surface as a function of surface potential (Ψ). The rates of EDL formation are found to be on the order of hundreds of picoseconds and only slightly influenced by the addition of Li-salt. The EDLs of three electrolytes are shown to have different energy storage capacities, which we relate to the EDL formation free energy. The differential capacitance obtained from our computations exhibits asymmetry about the potential of zero charge and is consistent with the camel-like profiles noted from mean field theories and experiments on metallic electrodes. The introduction of Li-salt reduces the noted asymmetry in the differential capacitance profile. Complementary experimental capacitance measurements have been made on our three electrolytes in their neat forms and with Li-salt. The measurements, performed on glassy carbon electrodes, produce U-like profiles, and Li-salt doping is shown to strongly affect capacitance at high magnitudes of Ψ. Differences in the theoretical and experimental shapes and magnitudes of capacitance are rationalized in terms of the electrode surface and pseudocapacitive effects. In both neat and Li-doped liquids, the details of the computational capacitance profile are well described by Ψ-induced changes in the density and molecular orientation of ions in the molecular layer closest to the electrode. Our results suggest that the addition of Li+ induces disorder in the EDL, which originates from the strong binding of anions to Li+. An in-depth analysis of the distribution of Li+ in the EDL reveals that it does not readily enter the molecular layer at the electrode surface, preferring instead to be localized farther away from the surface in the second molecular layer. This behavior is validated through an analysis of the free energy of Li+ solvation as a function of distance from the electrode. Free energy wells are found to coincide with localized concentrations of Li+, the depths of which increase with Ψ and suggest a source of impedance for Li+ to reach the electrode. Finally, we make predictions of the specific energy at ideal graphite utilizing the computed capacitance and previously derived electrochemical windows of the liquids.
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Affiliation(s)
- Justin B Haskins
- AMA Inc., Thermal Materials Protection Branch, NASA Ames Research Center, Moffett Field, California 94035, USA
| | - James J Wu
- Photovoltaic and Electrochemical Systems Branch, NASA Glenn Research Center, Cleveland, Ohio 44135, USA
| | - John W Lawson
- Thermal Materials Protection Branch, NASA Ames Research Center, Moffett Field, California 94035, USA
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43
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Huang P, Lethien C, Pinaud S, Brousse K, Laloo R, Turq V, Respaud M, Demortiere A, Daffos B, Taberna PL, Chaudret B, Gogotsi Y, Simon P. On-chip and freestanding elastic carbon films for micro-supercapacitors. Science 2016; 351:691-5. [DOI: 10.1126/science.aad3345] [Citation(s) in RCA: 540] [Impact Index Per Article: 67.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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44
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Zhong C, Deng Y, Hu W, Qiao J, Zhang L, Zhang J. A review of electrolyte materials and compositions for electrochemical supercapacitors. Chem Soc Rev 2016; 44:7484-539. [PMID: 26050756 DOI: 10.1039/c5cs00303b] [Citation(s) in RCA: 1009] [Impact Index Per Article: 126.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Electrolytes have been identified as some of the most influential components in the performance of electrochemical supercapacitors (ESs), which include: electrical double-layer capacitors, pseudocapacitors and hybrid supercapacitors. This paper reviews recent progress in the research and development of ES electrolytes. The electrolytes are classified into several categories, including: aqueous, organic, ionic liquids, solid-state or quasi-solid-state, as well as redox-active electrolytes. Effects of electrolyte properties on ES performance are discussed in detail. The principles and methods of designing and optimizing electrolytes for ES performance and application are highlighted through a comprehensive analysis of the literature. Interaction among the electrolytes, electro-active materials and inactive components (current collectors, binders, and separators) is discussed. The challenges in producing high-performing electrolytes are analyzed. Several possible research directions to overcome these challenges are proposed for future efforts, with the main aim of improving ESs' energy density without sacrificing existing advantages (e.g., a high power density and a long cycle-life) (507 references).
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Affiliation(s)
- Cheng Zhong
- Key Laboratory of Advanced Ceramics and Machining Technology (Ministry of Education), School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China.
| | - Yida Deng
- Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University, Tianjin 300072, China
| | - Wenbin Hu
- Key Laboratory of Advanced Ceramics and Machining Technology (Ministry of Education), School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China. and Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University, Tianjin 300072, China
| | - Jinli Qiao
- School of Environmental Engineering, Donghua University, Shanghai, China
| | - Lei Zhang
- Energy, Mining & Environment, National Research Council of Canada, Vancouver, BC, Canada
| | - Jiujun Zhang
- Energy, Mining & Environment, National Research Council of Canada, Vancouver, BC, Canada
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45
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Boota M, Paranthaman MP, Naskar AK, Li Y, Akato K, Gogotsi Y. Waste Tire Derived Carbon-Polymer Composite Paper as Pseudocapacitive Electrode with Long Cycle Life. CHEMSUSCHEM 2015; 8:3576-3581. [PMID: 26404735 DOI: 10.1002/cssc.201500866] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Revised: 07/29/2015] [Indexed: 06/05/2023]
Abstract
Recycling hazardous wastes to produce value-added products is becoming essential for the sustainable progress of our society. Herein, highly porous carbon (1625 m(2) g(-1)) is synthesized using waste tires as the precursor and used as a supercapacitor electrode material. The narrow pore-size distribution and high surface area led to good charge storage capacity, especially when used as a three-dimensional nanoscaffold to polymerize polyaniline (PANI). The composite paper was highly flexible, conductive, and exhibited a capacitance of 480 F g(-1) at 1 mV s(-1) with excellent capacitance retention of up to 98% after 10,000 charge/discharge cycles. The high capacitance and long cycle life were ascribed to the short diffusional paths, uniform PANI coating, and tight confinement of the PANI in the inner pores of the tire-derived carbon through π-π interactions, which minimized the degradation of the PANI upon cycling. We anticipate that the same strategy can be applied to deposit other pseudocapacitive materials to achieve even higher electrochemical performance and longer cycle life-a key challenge for redox active polymers.
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Affiliation(s)
- M Boota
- A. J. Drexel Nanomaterials Institute and Department of Materials Science and Engineering, Drexel University, Philadelphia, PA, 19104, USA
| | - M Parans Paranthaman
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee, 37831, USA.
- The Bredesen Center for Interdisciplinary Research and Graduate Education, The University of Tennessee, Knoxville, Tennessee, 37996, USA.
| | - Amit K Naskar
- The Bredesen Center for Interdisciplinary Research and Graduate Education, The University of Tennessee, Knoxville, Tennessee, 37996, USA
- Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee, 37831, USA
| | - Yunchao Li
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee, 37831, USA
- The Bredesen Center for Interdisciplinary Research and Graduate Education, The University of Tennessee, Knoxville, Tennessee, 37996, USA
| | - Kokouvi Akato
- Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee, 37831, USA
| | - Y Gogotsi
- A. J. Drexel Nanomaterials Institute and Department of Materials Science and Engineering, Drexel University, Philadelphia, PA, 19104, USA.
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46
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He X, Monk J, Singh R, Hung FR. Molecular modelling of ionic liquids in the ordered mesoporous carbon CMK-5. MOLECULAR SIMULATION 2015. [DOI: 10.1080/08927022.2015.1089992] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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47
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Mykhailiv O, Lapinski A, Molina-Ontoria A, Regulska E, Echegoyen L, Dubis AT, Plonska-Brzezinska ME. Influence of the Synthetic Conditions on the Structural and Electrochemical Properties of Carbon Nano-Onions. Chemphyschem 2015; 16:2182-91. [DOI: 10.1002/cphc.201500061] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Indexed: 11/08/2022]
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48
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Wu C, Yan P, Zhang R, Jin J, Zhang X, Kang H. Comparative study of HNO3 activation effect on porous carbons having different porous characteristics. J APPL ELECTROCHEM 2015. [DOI: 10.1007/s10800-015-0840-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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49
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Van Aken KL, Beidaghi M, Gogotsi Y. Formulation of Ionic‐Liquid Electrolyte To Expand the Voltage Window of Supercapacitors. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201412257] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Katherine L. Van Aken
- A. J. Drexel Nanomaterials Institute and Department of Materials Science and Engineering, Drexel University, Philadelphia, PA 19104 (USA)
| | - Majid Beidaghi
- A. J. Drexel Nanomaterials Institute and Department of Materials Science and Engineering, Drexel University, Philadelphia, PA 19104 (USA)
| | - Yury Gogotsi
- A. J. Drexel Nanomaterials Institute and Department of Materials Science and Engineering, Drexel University, Philadelphia, PA 19104 (USA)
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Van Aken KL, Beidaghi M, Gogotsi Y. Formulation of Ionic‐Liquid Electrolyte To Expand the Voltage Window of Supercapacitors. Angew Chem Int Ed Engl 2015; 54:4806-9. [DOI: 10.1002/anie.201412257] [Citation(s) in RCA: 198] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Revised: 02/09/2015] [Indexed: 11/07/2022]
Affiliation(s)
- Katherine L. Van Aken
- A. J. Drexel Nanomaterials Institute and Department of Materials Science and Engineering, Drexel University, Philadelphia, PA 19104 (USA)
| | - Majid Beidaghi
- A. J. Drexel Nanomaterials Institute and Department of Materials Science and Engineering, Drexel University, Philadelphia, PA 19104 (USA)
| | - Yury Gogotsi
- A. J. Drexel Nanomaterials Institute and Department of Materials Science and Engineering, Drexel University, Philadelphia, PA 19104 (USA)
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