Rechargeable Al-Metal Aqueous Battery Using NaMnHCF as a Cathode: Investigating the Role of Coated-Al Anode Treatments for Superior Battery Cycling Performance

Kumar, Sonal; Verma, Vivek; Arora, Hemal; Manalastas, William; Srinivasan, Madhavi

doi:10.1021/acsaem.0c01240

Cited by 58 publications

(50 citation statements)

References 73 publications

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“…Apart from the stability window, the concentration of the electrolyte must be chosen in accordance to its compatibility with other cell components. For this reason, a different story emerges when looking into the effects of repeated plating and stripping of the Al anode [38]. In Figure 1a, it is quite perceptible that the 5M electrolyte leads to an unreliable performance, with drifting potentials and an increase in polarization (from ~0.7 V at 20 h, to 1.0 V at 180 h), possibly due to increased viscosity and reduced ionic conductivity [39].…”

Section: Resultsmentioning

confidence: 99%

Electrode–Electrolyte Interactions in an Aqueous Aluminum–Carbon Rechargeable Battery System

et al. 2021

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Being environmentally friendly, safe and easy to handle, aqueous electrolytes are of particular interest for next-generation electrochemical energy storage devices. When coupled with an abundant, recyclable and low-cost electrode material such as aluminum, the promise of a green and economically sustainable battery system has extraordinary appeal. In this work, we study the interaction of an aqueous electrolyte with an aluminum plate anode and various graphitic cathodes. Upon establishing the boundary conditions for optimal electrolyte performance, we find that a mesoporous reduced graphene oxide powder constitutes a better cathode material option than graphite flakes.

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Section: Resultsmentioning

confidence: 99%

Electrode–Electrolyte Interactions in an Aqueous Aluminum–Carbon Rechargeable Battery System

et al. 2021

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“…[ 6 ] These two pioneering studies have since led a surge in reports of fully reversible aqueous AMBs (AAMB). [ 7–12 ]…”

Section: Introductionmentioning

confidence: 99%

“…[6] These two pioneering studies have since led a surge in reports of fully reversible aqueous AMBs (AAMB). [7][8][9][10][11][12] There are however concerns regarding the validity and effectiveness of the two SEI engineering methods. First, there has not been any experimental or computational characterizations that support an SEI can form on Al from 5 m Al(OTF) 3 , especially given its low concentration compared with alkali metal WiSE.…”

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confidence: 99%

Solid Electrolyte Interphase Engineering for Aqueous Aluminum Metal Batteries: A Critical Evaluation

Dong

Wang

et al. 2021

Advanced Energy Materials

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These issues are especially prominent in aqueous electrolytes, as hydrogen evolution reaction readily occurs at such low potentials and water molecules act as an oxygen source for oxide film formation. [4] Remarkably, two recent works have seemingly been able to address these challenges by engineering a solid electrolyte interphase (SEI) on Al, either "in situ" by 5 m (mol kg −1 ) Al(OTF) 3 (aluminum triflate) water-in-salt electrolyte (Al-WiSE), [5] or "ex situ" by IL pretreatment. [6] These two pioneering studies have since led a surge in reports of fully reversible aqueous AMBs (AAMB). [7][8][9][10][11][12] There are however concerns regarding the validity and effectiveness of the two SEI engineering methods. First, there has not been any experimental or computational characterizations that support an SEI can form on Al from 5 m Al(OTF) 3 , especially given its low concentration compared with alkali metal WiSE. [13,14] The only reason an SEI is believed to exist is by observing a delayed onset of hydrogen evolution reaction on a glassy carbon electrode, which is not a reliable indicator given its high hydrogen evolution reaction overpotentials, particularly relative to Al. [15] On the other hand, while it is proven that IL treatment can form a residue layer on Al, its fundamental ion and electron transport properties as well as its stability in aqueous electrolytes were not investigated; hence, its ability to function as an artificial SEI, is practically unknown. To address these concerns, in this work we critically evaluated each SEI engineering method, elucidated their underlying mechanisms, and revealed whether they can allow for truly rechargeable AAMBs.

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“…In Figure 1a, it is quite perceptible that the 5M electrolyte leads to an unreliable performance, with drifting potentials and an increase in polarization (from ~0.7 V at 20 h, to 1.0 V at 180 h), possibly due to increased viscosity and reduced ionic conductivity. 39 By contrast, the other electrolyte concentrations result in much more stable responses and smaller polarization values (0.35 V for 3M; 0.3 V for 2M; 0.25 V for 1M). Nevertheless, both the 1M and the 3M show sharp overshoot tails after a 6 h rest, instead of the desirable flat potentials.…”

Section: Resultsmentioning

confidence: 97%

Graphitic Cathodes for Aluminum Batteries with Aqueous Electrolytes

Smajic

Alazmi

Wehbe

et al. 2021

Preprint

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Concerns over lithium-ion battery safety and environmental impact have led to increased exploration of alternative energy storage systems. Of these, aluminum is of particular interest, being environmentally friendly, safe and easy to handle. In this work, we explore graphitic cathodes with an aqueous electrolyte (aluminum trifluoromethanesulfonate) and study their electrochemical performance. Finally, a reduced graphene cathode with tailored porosity results in an eco-friendly and inherently safe rechargeable battery with promising electrochemical performance

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Rechargeable Al-Metal Aqueous Battery Using NaMnHCF as a Cathode: Investigating the Role of Coated-Al Anode Treatments for Superior Battery Cycling Performance

Abstract: Al-metal aqueous battery using NaMnHCF as cathode : investigating the role of coated-Al anode treatments for supe-rior battery cycling performance. ACS Applied Energy Materials, 3(9), 8627-8635.

Cited by 58 publications

References 73 publications

Electrode–Electrolyte Interactions in an Aqueous Aluminum–Carbon Rechargeable Battery System

Electrode–Electrolyte Interactions in an Aqueous Aluminum–Carbon Rechargeable Battery System

Solid Electrolyte Interphase Engineering for Aqueous Aluminum Metal Batteries: A Critical Evaluation

Graphitic Cathodes for Aluminum Batteries with Aqueous Electrolytes

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