Erratum: Aluminium Deposition in EMImCl-AlCl<sub>3</sub> Ionic Liquid and Ionogel for Improved Aluminium Batteries [J. Electrochem. Soc., 167, 040516 (2020)]

Schoetz, Theresa; Leung, Oi Man; Efimov, Igor; Zaleski, Chris; Miguel-Ortega, Álvaro; García, Nuria; Magro, P. Tiemblo; León, Carlos Ponce de

doi:10.1149/1945-7111/ab9383

Cited by 4 publications

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“…The ionic conductivities (σ) of the electrolytes were also determined via mathematical fitting (see ESI 5) of the observed currents to Eq. 2, as shown previously 32 from the stripping (i.e. anodic scan) portion of the voltammetric i-E curves.…”

Section: Fig 2 Acoustic Loss Data (Calculated From Eq 1) As a Function Of Potential For The Different Electrolytessupporting

confidence: 71%

Amidine-based ionic liquid analogues with AlCl₃: a credible new electrolyte for rechargeable Al batteries

et al. 2021

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Section: Fig 2 Acoustic Loss Data (Calculated From Eq 1) As a Function Of Potential For The Different Electrolytessupporting

confidence: 71%

Amidine-based ionic liquid analogues with AlCl₃: a credible new electrolyte for rechargeable Al batteries

et al. 2021

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“…These results are due to the lower concentration of Al 2 Cl 7 – anions present at lower Lewis acidities, which can limit the specific capacity of Al batteries as they are necessary to electrodeposit Al metal within the potential stability windows of the electrolytes (Figure B; Al deposition from Al 2 Cl 7 – at −0.2 V vs Al|Al(III)). Note that AlCl 4 – reduces to metallic Al only at −2 V vs Al|Al(III), which is beyond the potential stability window of AlCl 3 –EMImCl ionic liquids; thus, electrochemical decomposition of the less Lewis acidic composition would occur before any metallic Al can be deposited at the anode.…”

Section: Resultsmentioning

confidence: 99%

“…To investigate more quantitatively the hypothesis that mixing EMIm + and BMIm + cations disturbs ion clustering in the ionic liquid electrolyte, the dielectric constant, ε, and specific conductivity, σ, were calculated by CV curve fitting, applying the theory described in Schoetz et al 30 and Lucio et al 31 (eq S4, Supporting Information). Notably, the specific conductivity of the AlCl 3 −EMImCl (66 mol % AlCl 3 ) electrolyte determined by this method (11.9 mS cm −1 ) is in good agreement with data obtained by EIS measurements (12.1−12.0 mS cm −1 , Table S4, Supporting Information).…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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Ionic Liquid Electrolytes with Mixed Organic Cations for Low-Temperature Rechargeable Aluminum–Graphite Batteries

Schoetz

Messinger

2023

ACS Appl. Energy Mater.

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Recently, aluminum–graphite batteries using chloroaluminate ionic liquid electrolytes have been shown to store charge with significant pseudocapacitive contributions, features attractive for energy storage systems that must function with high capacity retention and high specific power at low temperatures. Herein, we present results toward rechargeable aluminum–graphite batteries designed specifically for low-temperature applications, focusing on electrolyte design to reduce the melting point and enhance ion transport properties down to −40 °C. Chloroaluminate ionic liquid electrolytes with mixtures of organic cations, particularly imidazolium cations with different asymmetric functional groups, were used to impart disorder, disrupt ion clustering, and enhance low-temperature ion mobilities. Graphite cathodes with higher pseudocapacitive contributions showed improved specific capacity retention at lower temperatures, while aluminum anodes with higher surface roughness reduced the nucleation energy for aluminum electrodeposition. An aluminum–natural graphite battery with mixed imidazolium cations was shown to exhibit 87% specific capacity retention at −20 °C and 10 mA g–1. Overall, the results demonstrate multiple approaches to improve low-temperature aluminum battery performance and illustrate electrochemical methods that quantify electrolyte properties relevant to ion transport and clustering, which can be universally translated into other battery systems.

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“…[ 13,24–26 ] Further benefits of incorporating a polymer matrix to encapsulate the liquid phase include the possibility of widening the electrolyte potential stability window. [ 12,18,27,28 ]…”

Section: Introductionmentioning

confidence: 99%

Solid Polymer Electrolytes with Enhanced Electrochemical Stability for High‐Capacity Aluminum Batteries

Leung,

Gordon,

Messinger

et al. 2024

Advanced Energy Materials

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Chloroaluminate ionic liquids are commonly used electrolytes in rechargeable aluminum batteries due to their ability to reversibly electrodeposit aluminum at room temperature. Progress in aluminum batteries is currently hindered by the limited electrochemical stability, corrosivity, and moisture sensitivity of these ionic liquids. Here, a solid polymer electrolyte based on 1‐ethyl‐3‐methylimidazolium chloride‐aluminum chloride, polyethylene oxide, and fumed silica is developed, exhibiting increased electrochemical stability over the ionic liquid while maintaining a high ionic conductivity of ≈13 mS cm−1. In aluminum–graphite cells, the solid polymer electrolytes enable charging to 2.8 V, achieving a maximum specific capacity of 194 mA h g−1 at 66 mA g−1. Long‐term cycling at 2.7 V showed a reversible capacity of 123 mA h g−1 at 360 mA g−1 and 98.4% coulombic efficiency after 1000 cycles. Solid‐state nuclear magnetic resonance spectroscopy measurements reveal the formation of five‐coordinate aluminum species that crosslink the polymer network to enable a high ionic liquid loading in the solid electrolyte. This study provides new insights into the molecular‐level design and understanding of polymer electrolytes for high‐capacity aluminum batteries with extended potential limits.

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Erratum: Aluminium Deposition in EMImCl-AlCl₃ Ionic Liquid and Ionogel for Improved Aluminium Batteries [J. Electrochem. Soc., 167, 040516 (2020)]

Cited by 4 publications

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Amidine-based ionic liquid analogues with AlCl₃: a credible new electrolyte for rechargeable Al batteries

Amidine-based ionic liquid analogues with AlCl₃: a credible new electrolyte for rechargeable Al batteries

Ionic Liquid Electrolytes with Mixed Organic Cations for Low-Temperature Rechargeable Aluminum–Graphite Batteries

Solid Polymer Electrolytes with Enhanced Electrochemical Stability for High‐Capacity Aluminum Batteries

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Erratum: Aluminium Deposition in EMImCl-AlCl3 Ionic Liquid and Ionogel for Improved Aluminium Batteries [J. Electrochem. Soc., 167, 040516 (2020)]

Cited by 4 publications

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Amidine-based ionic liquid analogues with AlCl3: a credible new electrolyte for rechargeable Al batteries

Amidine-based ionic liquid analogues with AlCl3: a credible new electrolyte for rechargeable Al batteries

Ionic Liquid Electrolytes with Mixed Organic Cations for Low-Temperature Rechargeable Aluminum–Graphite Batteries

Solid Polymer Electrolytes with Enhanced Electrochemical Stability for High‐Capacity Aluminum Batteries

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Erratum: Aluminium Deposition in EMImCl-AlCl₃ Ionic Liquid and Ionogel for Improved Aluminium Batteries [J. Electrochem. Soc., 167, 040516 (2020)]

Amidine-based ionic liquid analogues with AlCl₃: a credible new electrolyte for rechargeable Al batteries

Amidine-based ionic liquid analogues with AlCl₃: a credible new electrolyte for rechargeable Al batteries