Investigation of Ether-Based Ionic Liquid Electrolytes for Lithium-O<sub>2</sub>Batteries

Ferrari, Stefania; Quartarone, Eliana; Tomasi, Corrado; Bini, Marcella; Galinetto, P.; Fagnoni, Maurizio; Mustarelli, Piercarlo

doi:10.1149/2.0011502jes

Cited by 38 publications

(27 citation statements)

References 45 publications

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“…Ionic liquids (ILs) have attracted considerable interest in recent years for potential application as electrolyte in novel battery systems or as additive in electrolyte mixtures because of a number of interesting properties such as very low vapour pressure, low flammability and high thermal and electrochemical stability, and inherent ionic conductivity. For these applications the electrochemical stability is a key aspect, since the high cell voltages of such systems are likely to exceed the stability range of traditional organic electrolytes.…”

Section: Introductionmentioning

confidence: 99%

Effect of Li⁺ and Mg²⁺ on the Electrochemical Decomposition of the Ionic Liquid 1‐Butyl‐1‐ methylpyrrolidinium bis(trifluoromethanesulfonyl)imide and Related Electrolytes

et al. 2019

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We investigated the decomposition of 1‐butyl‐1‐methylpyrrolidinium bis(trifluoromethanesulfonyl)imide (BMP‐TFSI) based electrolytes on Au and glassy carbon (GC) in the absence and presence of Li(TFSI) and Mg(TFSI)2. Detecting the volatile reaction products via differential electrochemical mass spectrometry (DEMS) measurements allowed us to gain insight into the decomposition mechanisms. In neat ionic liquid (IL) and on Au electrodes both ions are decomposed at reductive potentials. The TFSI− anion mainly decomposes by releasing CF3, while for the BMP+ cation ring opening and scission of either the methyl or the butyl side chain occur in parallel. At oxidative potentials the decomposition of the anion is the predominant process. Changing to the GC electrode increases the fraction of TFSI− decomposition products at both cathodic and anodic potentials. The addition of Li+ largely hinders the formation of volatile BMP‐TFSI decomposition. In contrast, addition of Mg2+ promotes the TFSI− decomposition at the expense of the BMP+ decomposition.

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Section: Introductionmentioning

confidence: 99%

Effect of Li⁺ and Mg²⁺ on the Electrochemical Decomposition of the Ionic Liquid 1‐Butyl‐1‐ methylpyrrolidinium bis(trifluoromethanesulfonyl)imide and Related Electrolytes

et al. 2019

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“…In addition, the performance of ionic liquids could be synergistically improved by blending with aprotic solvents, such as PYR 14 TFSI/TEGDME electrolyte, [120] 1-butyl-1-methyl-pyrrolidinium bis(trifluoromethylsulfonyl)imide ([BMP][NTf 2 ])/ DMSO electrolyte, [127] N-methoxyethyl-N-methylpyrrolidinium bis(trifluoromethanesulfonyl)-imide (PYR 1,2O1 TFSI)/TEGDME electrolyte, [128] …”

Section: Wwwadvsustainsyscommentioning

confidence: 99%

“…In addition, the performance of ionic liquids could be synergistically improved by blending with aprotic solvents, such as PYR 14 TFSI/TEGDME electrolyte, 1‐butyl‐1‐methyl‐pyrrolidinium bis(trifluoromethylsulfonyl)imide ([BMP][NTf 2 ])/DMSO electrolyte, N ‐methoxyethyl‐ N ‐methylpyrrolidinium bis(trifluoromethanesulfonyl)‐imide (PYR 1,2O1 TFSI)/TEGDME electrolyte, N‐ butyl‐ N,N ‐dimethyl‐ N ‐ethylammonium bis(trifluoromethyl)sulfonylimide [N 1124 ][TFSI]/TEGDME electrolyte, and PYR 14 TFSI/DME electrolyte . For example, PYR 14 TFSI/TEGDME electrolyte demonstrated enhanced kinetics and reversibility for the oxygen reactions due to the significantly improved conductivity of the TEGDME electrolyte by blending with PYR 14 TFSI ionic liquid, resulting in a lower overpotential during the charge process compared with the solely TEGDME electrolyte .…”

Section: Nonaqueous Electrolytementioning

confidence: 99%

Review of Electrolytes in Nonaqueous Lithium–Oxygen Batteries

Guo

Luo

Chen

et al. 2018

Advanced Sustainable Systems

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Based on an inexhaustible and ubiquitous source of oxygen, the lithium-oxygen batteries are currently the subject of much scientific investigation because of their potential for extremely high energy density. The electrocatalytic materials for them have been extensively researched during the past decade. Even though they are a key component in the lithium-oxygen batteries, however, the study of electrolytes is still in its primary stage. Electrolytes have an important influence on the electrochemical performance of lithium-oxygen batteries, especially on their cycling stability and rate capacity. Therefore, it is important to select an ideal electrolyte with excellent stability against attack by reaction intermediates, along with excellent oxygen solubility and diffusivity. In this review, the physicochemical and electrochemical properties of organic electrolytes for lithium-oxygen batteries are discussed and compared. Furthermore, possible research directions are proposed for the development of an ideal electrolyte for enhanced electrochemical performance. Disciplines Engineering | Physical Sciences and Mathematics Publication DetailsGuo, H., Luo, W., Chen, J., Chou, S., Liu, H. & Wang, J. (2018 Figure 1. Unlike the intercalation mechanism of lithium-ion batteries or sodium-ion batteries, the Li-O 2 battery systems employ a dissolution/ deposition reaction with an air electrode that uses oxygen as the cathode electrode during the electrochemical processes. Research on the Li-O 2 battery is complicated by the need for exposure the air cathode to O 2 atmosphere.Many advances have been achieved, which include advances on cathode materials, electrolytes, anode materials, and redox mediators. [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24] Several excellent reviews have been published to summarize recent developments and our current understanding of Li-O 2 batteries, especially with respect to the cathode electrocatalytic materials. [25][26][27][28][29][30][31][32][33][34][35] These reviews have comprehensively discussed the relationship between the structure of electrocatalytic materials and the electrochemical performance of Li-O 2 batteries. There are, however, few reviews focused on the effects of different electrolytes on the electrochemical performance of the Li-O 2 batteries. [36][37][38] For the aqueous Li-O 2 batteries, LiOH is generated or oxidized at the cathode during discharge and charge processes because H 2 O and O 2 are involved in the reactions. In the case of the nonaqueous Li-O 2 batteries, there are two essential processes that determine their electrochemical performance: the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER). During the ORR process, the Li 2 O 2 is precipitated as the final discharge product on the air cathode, while during the OER process, Li 2 O 2 is then decomposed and the O 2 is regenerated. Therefore, there are huge differences between aqueous and nonaqueous Li-O 2 batteries. Since the nonaqueous Li-O 2 batteries have dominated ...

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“…However, this reaction suffers from low reversibility leading to a low cyclability of the battery. Recently, Room Temperature Ionic Liquids (RTILs) attracted much attention for Li−O 2 battery electrolyte . Namely, Nakamoto et al .…”

Section: Ionic Conductivity Viscosity Degradation Temperature Capamentioning

confidence: 99%

“…Recently, Room Temperature Ionic Liquids (RTILs) attracted much attention for LiÀO 2 battery electrolyte. [2][3][4][5][6][7][8][9][10][11][12] Namely, Nakamoto et al [13] demonstrated the advantage of the RTILs stability against electrochemical oxidation vs. Li + /Li and O 2 redox reversibility. Cai et al [14] proved that ionic liquid could show higher specific capacity compared to carbonate solvent electrolytes.…”

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confidence: 99%

Suitability of Blended Ionic Liquid‐Dimethylsulfoxide Electrolyte for Lithium‐Oxygen Battery

Knipping

Aucher

Guirado

et al. 2018

Batteries & Supercaps

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Electrolytes composed of dimethylsulfoxide (DMSO), 1‐ethyl‐3‐methylimidazolium bis(trifluoromethylsulfonyl)imide (EMI TFSI) and LiClO4 are characterized for application in lithium‐oxygen batteries. The increase of EMI TFSI content in the electrolyte enables to improve its thermal stability and to decrease the overpotential of the cell. The optimum addition of EMI TFSI enables to reduce the overpotential from 1.43 V to 1.06 V, with a cyclability of 69 cycles with 600 mAh g−1 of limited capacity.

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Investigation of Ether-Based Ionic Liquid Electrolytes for Lithium-O₂Batteries

Cited by 38 publications

References 45 publications

Effect of Li⁺ and Mg²⁺ on the Electrochemical Decomposition of the Ionic Liquid 1‐Butyl‐1‐ methylpyrrolidinium bis(trifluoromethanesulfonyl)imide and Related Electrolytes

Effect of Li⁺ and Mg²⁺ on the Electrochemical Decomposition of the Ionic Liquid 1‐Butyl‐1‐ methylpyrrolidinium bis(trifluoromethanesulfonyl)imide and Related Electrolytes

Review of Electrolytes in Nonaqueous Lithium–Oxygen Batteries

Suitability of Blended Ionic Liquid‐Dimethylsulfoxide Electrolyte for Lithium‐Oxygen Battery

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Investigation of Ether-Based Ionic Liquid Electrolytes for Lithium-O2Batteries

Cited by 38 publications

References 45 publications

Effect of Li+ and Mg2+ on the Electrochemical Decomposition of the Ionic Liquid 1‐Butyl‐1‐ methylpyrrolidinium bis(trifluoromethanesulfonyl)imide and Related Electrolytes

Effect of Li+ and Mg2+ on the Electrochemical Decomposition of the Ionic Liquid 1‐Butyl‐1‐ methylpyrrolidinium bis(trifluoromethanesulfonyl)imide and Related Electrolytes

Review of Electrolytes in Nonaqueous Lithium–Oxygen Batteries

Suitability of Blended Ionic Liquid‐Dimethylsulfoxide Electrolyte for Lithium‐Oxygen Battery

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Product

Resources

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Investigation of Ether-Based Ionic Liquid Electrolytes for Lithium-O₂Batteries

Effect of Li⁺ and Mg²⁺ on the Electrochemical Decomposition of the Ionic Liquid 1‐Butyl‐1‐ methylpyrrolidinium bis(trifluoromethanesulfonyl)imide and Related Electrolytes

Effect of Li⁺ and Mg²⁺ on the Electrochemical Decomposition of the Ionic Liquid 1‐Butyl‐1‐ methylpyrrolidinium bis(trifluoromethanesulfonyl)imide and Related Electrolytes