N,N-Dimethylethanesulfonamide as an Electrolyte Solvent Stable for the Positive Electrode Reaction of Aprotic Li–O2 Batteries

Nishioka, Kazuhiko; Saito, Morihiro; Ono, Manai; Matsuda, Shôichi; Nakanishi, Shuji

doi:10.1021/acsaem.1c03999

Cited by 12 publications

(9 citation statements)

References 42 publications

(97 reference statements)

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“…In the system with the TEGDME-based electrolyte containing LiBr and LiNO 3 as a redox mediator, the following reaction mechanism was proposed. 52 products of TEGDME are the main origins of the generated CO 2 . We also performed in situ MS at the fifth charge (Figure S4).…”

Section: Resultsmentioning

confidence: 99%

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Carbon Gel-Based Self-Standing Membranes as the Positive Electrodes of Lithium–Oxygen Batteries under Lean-Electrolyte and High-Areal-Capacity Conditions

et al. 2023

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Lithium−oxygen batteries (LOBs) are promising nextgeneration rechargeable batteries due to their high theoretical energy densities. The optimization of the porous carbon-based positive electrode is a crucial challenge in the practical implementation of LOB technologies. Although numerous studies have been conducted regarding the relationships between LOB performance and the physicochemical properties of carbon electrodes, most of these studies evaluate the performances of the electrodes under unrealistic conditions with inappropriate technological parameters. In this study, we prepared carbon gel-based self-standing membranes as positive electrodes and evaluated their performances in LOBs under lean-electrolyte, high-areal-capacity conditions. We clarified the following three crucial points: (1) The nanometer-sized pores exhibited limited effects in improving the cycle performance, although they contributed in enhancing the discharge capacity. (2) The macro-sized pores displayed positive effects in enhancing the discharge capacity. (3) The crystallinity and/or surface functional groups influence the discharge potential and cycle life. The results of this study suggest the significance of controlling the physicochemical properties of a porous carbon-based positive electrode in preparing a LOB with a practically high energy density and an extended cycle life.

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Section: Resultsmentioning

confidence: 99%

“…In the system with the TEGDME-based electrolyte containing LiBr and LiNO 3 as a redox mediator, the following reaction mechanism was proposed . First, Li 2 O 2 formed on the carbon electrode during the early stage of discharge, and then Li 2 O 2 formed during the latter stage of discharge accumulated on the electrodes.…”

Section: Results and Discussionmentioning

confidence: 99%

Carbon Gel-Based Self-Standing Membranes as the Positive Electrodes of Lithium–Oxygen Batteries under Lean-Electrolyte and High-Areal-Capacity Conditions

et al. 2023

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“…However, this safety feature often comes at the expense of increased viscosity. [25] In addition to the commonly discussed electrolyte properties, it's crucial to consider lesser-discussed factors such as flammability and the overall wettability of the battery system. [7,10,26] These properties hold significant importance for the widespread industrial applications of batteries in electric vehicles and consumer products.…”

Section: Correlation Of Organosulfur Structures and Their Physical Pr...mentioning

confidence: 99%

Sulfur Solutions: Advancing High Voltage and High Energy Lithium Batteries with Organosulfur Electrolytes

Dato,

Edgington,

Hung

et al. 2024

Advanced Energy Materials

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Achieving energy densities exceeding 350 Wh kg−1 while operating at elevated voltages (>4.5 V vs Li/Li+) is attainable through judicious selection of electrochemical pairs at the cathode and anode. However, current state‐of‐the‐art electrolytes exhibit limited stability when exposed to systems operating at or above 4.3 V. This limitation contributes to the degradation of electrode materials and raises critical safety concerns, impeding the commercialization of such systems. Consequently, there has been a notable surge in research efforts aimed at developing innovative electrolyte compositions capable of supporting high‐voltage lithium‐ion batteries (LIBs). A substantial portion of this research has focused on the family of organosulfur molecules, which possess high oxidative stability. Organosulfur salts also facilitate the formation of dense, ionically conductive solid electrolyte interfaces (SEI) and demonstrate excellent solubility. This article provides a comprehensive overview of the field of organosulfur electrolyte components for their applications in energy storage, encompassing solvents, alternative conducting salts, and additives. It emphasizes the idea that the deliberate design of electrolyte compositions is instrumental in controlling electrode passivation, with organosulfur‐based structures historically proving advantageous in every aspect of the electrolyte. Crucially, it should be noted that many of these components are commercially available, holding significant implications for industrial applications.

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“…In the quest for LOBs with high energy densities and long cycle lifetimes, considerable progress has been made in developing novel materials such as porous carbon electrodes, , electrolytes with stability against reactive oxygen species, , and protective layers for lithium electrodes. , However, most gas diffusion layer development has centered on carbon fiber-based materials, which are used in polymer electrolyte fuel cells. There has been limited effort in the development of effective gas diffusion layer materials for nonaqueous LOBs.…”

Section: Introductionmentioning

confidence: 99%

Metal-Coated Polymer Fiber Mesh as an Ultralightweight Gas-Diffusible Current Collector for High-Energy-Density Rechargeable Lithium–Oxygen Batteries

Miyakawa

Goto

Ono

et al. 2023

ACS Appl. Energy Mater.

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Lithium−oxygen batteries (LOBs) have received great attention as nextgeneration energy storage devices owing to their superior theoretical energy densities. Although there has been considerable technological progress in the field of LOBs, the development of gas diffusion layer materials at the positive oxygen electrode is limited despite their importance in providing an oxygen supply needed to achieve practical power densities. In the present study, we demonstrate the concept of a gas-diffusible current collector, which combines the functions of oxygen mass transport and electron transfer with minimal mass loading. To verify this concept, we fabricated a Ni-coated polymer fiber mesh and investigated its applicability in LOBs. LOB cells equipped with an ultralightweight gas-diffusible current collector exhibit a performance equivalent to that of cells equipped with conventional heavy components at 0.4 mA/cm 2 current density and 4.0 mAh/cm 2 areal capacity. We believe that the concept of an ultralightweight gasdiffusible current collector demonstrated in this study opens future directions in the search for metal−air batteries with high energy and power densities.

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N,N-Dimethylethanesulfonamide as an Electrolyte Solvent Stable for the Positive Electrode Reaction of Aprotic Li–O₂ Batteries

Cited by 12 publications

References 42 publications

Carbon Gel-Based Self-Standing Membranes as the Positive Electrodes of Lithium–Oxygen Batteries under Lean-Electrolyte and High-Areal-Capacity Conditions

Carbon Gel-Based Self-Standing Membranes as the Positive Electrodes of Lithium–Oxygen Batteries under Lean-Electrolyte and High-Areal-Capacity Conditions

Sulfur Solutions: Advancing High Voltage and High Energy Lithium Batteries with Organosulfur Electrolytes

Metal-Coated Polymer Fiber Mesh as an Ultralightweight Gas-Diffusible Current Collector for High-Energy-Density Rechargeable Lithium–Oxygen Batteries

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