A Rechargeable Aqueous Lithium-Air Battery with an Acetic Acid Catholyte Operated at High Pressure

Ichida, Syuma; Mori, Daisuke; Taminato, Sou; Zhang, Tao; Takeda, Yasuo; Yamamoto, Osamu; Imanishi, Nobuyuki

doi:10.21926/jept.2201009

Cited by 2 publications

(1 citation statement)

References 21 publications

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“…The same clogging phenomenon is also observed in aqueous electrolytes at higher pH and ambient temperatures. It is presumable that the forward reaction product, LiOH, did not dissolve in alkali conditions (12.8 g/100 g H 2 O) at given temperatures and used to be in the form of LiOH•H 2 O.The problems caused by precipitation can be controlled by maintaining the pH of the electrolyte by adding buffer solutions [52,53]. Another problem of alkaline electrolytes is the formation of LiCO 3 during the cathodic reaction of Li + with CO 2 instead of O 2 .…”

Section: Aqueous Electrolyte Li-o 2 Batterymentioning

confidence: 99%

Status Quo on Graphene Electrode Catalysts for Improved Oxygen Reduction and Evolution Reactions in Li-Air Batteries

et al. 2022

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Reduced global warming is the goal of carbon neutrality. Therefore, batteries are considered to be the best alternatives to current fossil fuels and an icon of the emerging energy industry. Voltaic cells are one of the power sources more frequently employed than photovoltaic cells in vehicles, consumer electronics, energy storage systems, and medical equipment. The most adaptable voltaic cells are lithium-ion batteries, which have the potential to meet the eagerly anticipated demands of the power sector. Working to increase their power generating and storage capability is therefore a challenging area of scientific focus. Apart from typical Li-ion batteries, Li-Air (Li-O2) batteries are expected to produce high theoretical power densities (3505 W h kg−1), which are ten times greater than that of Li-ion batteries (387 W h kg−1). On the other hand, there are many challenges to reaching their maximum power capacity. Due to the oxygen reduction reaction (ORR) and oxygen evolution reaction (OES), the cathode usually faces many problems. Designing robust structured catalytic electrode materials and optimizing the electrolytes to improve their ability is highly challenging. Graphene is a 2D material with a stable hexagonal carbon network with high surface area, electrical, thermal conductivity, and flexibility with excellent chemical stability that could be a robust electrode material for Li-O2 batteries. In this review, we covered graphene-based Li-O2 batteries along with their existing problems and updated advantages, with conclusions and future perspectives.

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Section: Aqueous Electrolyte Li-o 2 Batterymentioning

confidence: 99%

Status Quo on Graphene Electrode Catalysts for Improved Oxygen Reduction and Evolution Reactions in Li-Air Batteries

et al. 2022

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Organic Solvent-Based Li–Air Batteries with Cotton and Charcoal Cathode

Nagy,

Üneri,

Kordován

et al. 2024

J. Electrochem. Soc.

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We report on the construction and investigation of Li–air batteries consisting of a charcoal cathode and cotton texture soaked with different organic solvents containing a lithium triflate (LiOTf) electrolyte. Charcoal was found to be an appropriate cathode for Li–air batteries. Furthermore, cycling tests showed stable operation at over 800 cycles when dimethyl sulfoxide (DMSO) and diethylene glycol dimethyl ether (DEGME) were used as solvents, whereas low electrochemical stability was observed when propylene carbonate was used. The charging, discharging, and long-term discharging steps were mathematically modeled. Electrochemical impedance spectroscopy showed Gerischer impedance, suggesting intensive oxygen transport at the surface of the charcoal cathode. Diffusion, charge transfer, and solid electrolyte interphase processes were identified using distribution of relaxation time analysis. In the polypropylene (PP) membrane soaked with LiOTf in DEGME, three different states of Li ions were identified by 7Li-triple-quantum time proportional phase increment nuclear magnetic resonance measurements. On the basis of the latter results, a mechanism was suggested for Li-ion transport inside the PP membrane. The activity of the charcoal cathode was confirmed by Raman and cyclic voltammetry measurements.

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A Rechargeable Aqueous Lithium-Air Battery with an Acetic Acid Catholyte Operated at High Pressure

Cited by 2 publications

References 21 publications

Status Quo on Graphene Electrode Catalysts for Improved Oxygen Reduction and Evolution Reactions in Li-Air Batteries

Status Quo on Graphene Electrode Catalysts for Improved Oxygen Reduction and Evolution Reactions in Li-Air Batteries

Organic Solvent-Based Li–Air Batteries with Cotton and Charcoal Cathode

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