Effects of Operating Temperature on the Electrical Performance of a Li-air Battery operated with Ionic Liquid Electrolyte

Yoo, Kisoo; Dive, Aniruddha Mukund; Kazemiabnavi, Saeed; Banerjee, Soumik; Dutta, Prashanta

doi:10.1016/j.electacta.2016.02.099

Cited by 29 publications

(24 citation statements)

References 41 publications

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“…[126] Atomistic calculations revealed that transport properties,n ot only Li + diffusivity but also O 2 solubility,a re promoted in RTIL electrolytes at higher operating temperatures.T his behavior is quite different from that of common aprotic electrolytes,where the solubility of O 2 decreases with rising temperature. [127] This means that RTILs may work better than aprotic electrolytes in Li-air batteries at high temperature.…”

Section: Angewandte Chemiementioning

confidence: 99%

Electrolytes for Rechargeable Lithium–Air Batteries

et al. 2019

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Lithium–air batteries are promising devices for electrochemical energy storage because of their ultrahigh energy density. However, it is still challenging to achieve practical Li–air batteries because of their severe capacity fading and poor rate capability. Electrolytes are the prime suspects for cell failure. In this Review, we focus on the opportunities and challenges of electrolytes for rechargeable Li–air batteries. A detailed summary of the reaction mechanisms, internal compositions, instability factors, selection criteria, and design ideas of the considered electrolytes is provided to obtain appropriate strategies to meet the battery requirements. In particular, ionic liquid (IL) electrolytes and solid‐state electrolytes show exciting opportunities to control both the high energy density and safety.

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Section: Angewandte Chemiementioning

confidence: 99%

Electrolytes for Rechargeable Lithium–Air Batteries

et al. 2019

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“…The fundamental requirement of an IL to be an electrolyte for electrochemical application is that it should possess a wide electrochemical window (ECW) providing resistance to any electrochemical oxidation and reduction. In electrochemical devices such as capacitors, lithium ion batteries, fuel cells, and dye‐sensitized solar cells, the ILs act as electrolytes . Non‐volatility and prevention of electrolyte from drying during the operations are the main advantages of ILs for use in electrochemical devices.…”

Section: Introductionmentioning

confidence: 99%

Pyrrolidinium‐based ionic liquids as electrolytes for lithium batteries: A Computational Study

Sivaji

Vijayalakshmi

George

2019

Int J of Quantum Chemistry

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Electrochemical windows (ECWs) of the cyclic ammonium based ionic liquids formed by the combination of two common pyrrolidinium cations—N,N‐butylmethyl pyrrolidinum(Pyr14) and N,N‐hexylmethyl pyrrolidinium(Pyr16) and five anions—dicyanamide, trifluoroacetate, fluoromethane sulfonate, bis((trifluoromethylsulfonyl)imide, and bis(fluorosulfonyl)imide were investigated. The ECW of each ionic liquid was obtained from the oxidation and reduction potentials of these ionic liquids with respect to a Li+/Li reference electrode by using thermodynamic cycle method. The work reveals that the ECWs of these ionic liquids are solely decided by the HOMO energy of pairing anions. The ECWs were also computed using HOMO‐LUMO method employing Møller‐Plesset perturbation theory to the second order and M06L methods with a basis set of 6‐31 + G(d, p). The ECW computed using M06L functional with an extended basis set of 6‐311++G(d, p) showed better agreement with experimental values suggesting accurate computation of ECW is possible at lower computational cost.

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“…All components of the local dielectric tensor near interfaces will be extracted from more detailed atomistic MD or ab initio simulations. An alternative strategy for modeling, e.g., ionic liquid based ternary electrolytes, is to introduce the mutual diffusion of interacting ions in the MPNP equations under the assumption that the Maxwell‐Stefan framework is applicable . The mutual diffusion coefficients of interacting ions can be extracted from more detailed MD simulations.…”

Section: Resultsmentioning

confidence: 99%

Modeling electrokinetics in ionic liquids

et al. 2017

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Using direct numerical simulations, we provide a thorough study regarding the electrokinetics of ionic liquids. In particular, modified Poisson-Nernst-Planck equations are solved to capture the crowding and overscreening effects characteristic of an ionic liquid. For modeling electrokinetic flows in an ionic liquid, the modified Poisson-Nernst-Planck equations are coupled with Navier-Stokes equations to study the coupling of ion transport, hydrodynamics, and electrostatic forces. Specifically, we consider the ion transport between two parallel charged surfaces, charging dynamics in a nanopore, capacitance of electric double-layer capacitors, electroosmotic flow in a nanochannel, electroconvective instability on a plane ion-selective surface, and electroconvective flow on a curved ion-selective surface. We also discuss how crowding and overscreening and their interplay affect the electrokinetic behaviors of ionic liquids in these application problems.

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Effects of Operating Temperature on the Electrical Performance of a Li-air Battery operated with Ionic Liquid Electrolyte

Cited by 29 publications

References 41 publications

Electrolytes for Rechargeable Lithium–Air Batteries

Electrolytes for Rechargeable Lithium–Air Batteries

Pyrrolidinium‐based ionic liquids as electrolytes for lithium batteries: A Computational Study

Modeling electrokinetics in ionic liquids

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