Effect of Collard Greens Extract as an Electrolyte Additive on the Performance of Aluminum-Air Batteries

Phạm, Thi Huong; Lee, Woo-Hyuk; Kim, Jung-Gu

doi:10.1149/1945-7111/ac0ec6

Cited by 5 publications

(3 citation statements)

References 69 publications

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“…The as-derived AAB shows a high discharge capacity of 2767 mAh g –1 and a high energy of 3702 mWh g –1 , outperforming previously reported Al–air batteries based on electrode and electrolyte optimization (Figure d, data summarized in Table S3). ,,,,− As a typical demonstration, an as-assembled AAB using the HCOONa-based hybrid electrolyte shows a high OCP of 1.634 V (Figure e). Moreover, the serial battery with three AABs can power the “XMU” pattern composed of 112 blue light emitting diodes (LEDs, Figure f).…”

Section: Resultsmentioning

confidence: 90%

Electrolyte Solvation Structure Regulation Promotes Aluminum–Air Batteries to Approach Theoretical Discharge Capacity

et al. 2023

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Aluminum−air batteries (AABs) feature high energy density and no limitations for charging facilities but suffer from severe self-corrosion reactions. Suppressing the side reaction between water and aluminum is the fundamental strategy to boost AAB performance. Herein, we first disclose that addition of sodium formate (HCOONa) can largely remold the solvation structure of the classic NaOH electrolyte and greatly reduce the amount of free water, thus constructing AABs close to their theoretical capacity. Ab initio molecular dynamics simulations show that multiple Na + and H 2 O form hydrated Na + ion clusters [Na m (OH 2 ) 7m ] m+ in the HCOONa−NaOH electrolyte. Meanwhile, HCOO − enters the first solvation layer of Na + and forms a "stable triangle" with Na + and H 2 O. The coordination network formed by Na + , H 2 O, and HCOO − results in a very low level of free water. Moreover, HCOO − further forms a self-assembled passivation layer on the Al surface. As such, the self-corrosion rate of Al in the HCOONa-based electrolyte is drastically reduced. More encouragingly, the ultrahigh capacity (2767 mAh g −1 ) delivered by AABs using the hybrid electrolyte reaches 92.9% of its theoretical value, concurrently achieving a high energy density of 3702 Wh kg −1 . This work paves the way for constructing durable AABs through an electrolyte regulation strategy.Article pubs.acs.org/JPCC

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Section: Resultsmentioning

confidence: 90%

Electrolyte Solvation Structure Regulation Promotes Aluminum–Air Batteries to Approach Theoretical Discharge Capacity

et al. 2023

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“…32,33 It is evident from self-corrosion and increases the hydrogen evolution overpotential. 17,19,21,[34][35][36][37][38] As a result, cerium chloride acted as a cathodic inhibitor, constraining the hydrogen evolution reaction primarily. 39 I corr , in contrast, increased as the concentration of cerium chloride increased to 1.5 wt%, indicating the uneven deposition of the cerium hydroxide precipitates on the anode surface due to the solution saturation.…”

Section: Resultsmentioning

confidence: 99%

Effect of Cerium Chloride on the Self-Corrosion and Discharge Activity of Aluminum Anode in Alkaline Aluminum-air Batteries

Harchegani

Riahi

2022

J. Electrochem. Soc.

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One of the key impediments to aluminum (Al) as an anode in alkaline Al-air batteries is self-corrosion, which limits the battery’s efficiency due to capacity loss and lifespan reduction. Thus, it is vital to find an efficient electrolyte additive that reduces self-corrosion in Al anodes. In this study, the effect of adding 0.5 to 1.5 wt% of cerium chloride to 4 mol/l KOH electrolyte on the self-corrosion of pure Al anode was investigated using electrochemical experiments. The results show that the addition of cerium chloride to the electrolyte reduces self-corrosion of the Al anode with a negligible effect on the anode activity. Cerium chloride forms cerium hydroxide (Ce (OH)3) in the alkaline electrolyte, which is adsorbed on the Al surface. Therefore, the corrosion potential increased, and self-corrosion current density decreased. As the cerium chloride concentration increased, the Al anode efficiency increased from 43.8% to 76.1%, and the capacity density increased from 1294 to 2244 mAh/g. Furthermore, increasing the immersion time of the Al anode in the electrolyte containing cerium chloride increased the self-corrosion resistance and provided the self-healing properties for the anode.

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“…[16][17][18] Due to the rising demand for clean energy technology like wind turbines, solar panels, or green batteries, researchers started to explore other alternative design of electrolytes to replace chemical electrolyte in future. [19][20][21] Researchers have reported "water in salt electrolyte" which provides a wider electrochemical potential, non-flammable, and tolerance of high concentration 22,23 on the cost of low conductivity, high viscosity, and salt precipitation at low temperature that in-turn affects the overall electrochemical behaviour. It is predicted that the demand of green electrolyte system will grow unprecedented level.…”

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confidence: 99%

Preliminary Experimental Study of Herbal Electrolyte for Future Green Battery

Ganti,

Singh,

Joshi

2024

J. Electrochem. Soc.

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Batteries are turned into one of the widely used energy source in our day-to day life which relies on the electrochemical dynamics and interaction among the electrolyte and electrodes. An electrolyte is important component of battery to decide the transfers ions back and forth between two electrodes which results electrical energy generation. However, electrolytes used in the conventional batteries are very hazardous due to release of toxic chemicals in the environment which affects the growth of plants and aquatic life. Therefore, it becomes clear that the chemical electrolyte system could no longer be required in future and design and characterization of alternative electrolyte is very important. The new electrolyte concepts hold the important metrices of any battery, higher safety, lower cost, and better cycle time. In the present paper we have carried out the preliminary investigation of the performance of Herbal electrolyte, which is cheap, non-flammable and insensitive to temperature. The main constituents of the proposed electrolyte are aloe vera gel, garlic cloves and Indian Jadi Buti which makes the electrolyte eco-friendly and non-toxic and does not cause any damage to environment when it disposed of.

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Effect of Collard Greens Extract as an Electrolyte Additive on the Performance of Aluminum-Air Batteries

Cited by 5 publications

References 69 publications

Electrolyte Solvation Structure Regulation Promotes Aluminum–Air Batteries to Approach Theoretical Discharge Capacity

Electrolyte Solvation Structure Regulation Promotes Aluminum–Air Batteries to Approach Theoretical Discharge Capacity

Effect of Cerium Chloride on the Self-Corrosion and Discharge Activity of Aluminum Anode in Alkaline Aluminum-air Batteries

Preliminary Experimental Study of Herbal Electrolyte for Future Green Battery

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