Some Possible Approaches for Improving the Energy Density of Li-Air Batteries

Andrei, Petru; Zheng, Jim P.; Hendrickson, Mary; Plichta, Edward J.

doi:10.1149/1.3486114

Cited by 138 publications

(153 citation statements)

References 18 publications

(37 reference statements)

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“…Existing models of Li-O 2 batteries are either macroscopic or atomistic. Cell-level models propose pore blocking due to reaction products [34][35][36][37][38] and surface passivation [24,39]. Atomistic models discuss the surface structure of Li 2 O 2 crystals [40][41][42][43][44], the kinetics of the oxygen reduction/evolution in aprotic electrolytes [40,44,45], and the electron conductivity of Li 2 O 2 [24,41,46].…”

mentioning

confidence: 99%

Rate-Dependent Morphology of Li₂O₂ Growth in Li–O₂ Batteries

Horstmann

Gallant

Mitchell

et al. 2013

J. Phys. Chem. Lett.

149

191

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Compact solid discharge products enable energy storage devices with high gravimetric and volumetric energy densities, but solid deposits on active surfaces can disturb charge transport and induce mechanical stress. In this Letter we develop a nanoscale continuum model for the growth of Li 2 O 2 crystals in lithium-oxygen batteries with organic electrolytes, based on a theory of electrochemical non-equilibrium thermodynamics originally applied to Li-ion batteries. As in the case of lithium insertion in phase-separating LiFePO 4 nanoparticles, the theory predicts a transition from complex to uniform morphologies of Li 2 O 2 with increasing current. Discrete particle growth at low discharge rates becomes suppressed at high rates, resulting in a film of electronically insulating Li 2 O 2 that limits cell performance. We predict that the transition between these surface growth modes occurs at current densities close to the exchange current density of the cathode reaction, consistent with experimental observations.

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mentioning

confidence: 99%

Rate-Dependent Morphology of Li₂O₂ Growth in Li–O₂ Batteries

Horstmann

Gallant

Mitchell

et al. 2013

J. Phys. Chem. Lett.

149

191

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“…One of the first continuum models for non-aqueous LABs was presented by Andrei, et al, in 2010 [137]. Their simulations considered the effects of cell architecture and operational conditions on concentration profiles and cell voltage, and provided a solid foundation for further development.…”

Section: Cell Modelingmentioning

confidence: 99%

A Review of Model-Based Design Tools for Metal-Air Batteries

2018

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Abstract:The advent of large-scale renewable energy generation and electric mobility is driving a growing need for new electrochemical energy storage systems. Metal-air batteries, particularly zinc-air, are a promising technology that could help address this need. While experimental research is essential, it can also be expensive and time consuming. The utilization of well-developed theory-based models can improve researchers' understanding of complex electrochemical systems, guide development, and more efficiently utilize experimental resources. In this paper, we review the current state of metal-air batteries and the modeling methods that can be implemented to advance their development. Microscopic and macroscopic modeling methods are discussed with a focus on continuum modeling derived from non-equilibrium thermodynamics. An applied example of zinc-air battery engineering is presented.

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“…Therefore, besides high Li ion conductivity, excellent oxygen dissolution and diffusion properties are necessary. [67,68] Adv. Sustainable Syst.…”

Section: Electrolyte Requirementsmentioning

confidence: 99%

Section: Ether-based Electrolytesmentioning

confidence: 99%

Review of Electrolytes in Nonaqueous Lithium–Oxygen Batteries

Guo

Luo

Chen

et al. 2018

Advanced Sustainable Systems

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Based on an inexhaustible and ubiquitous source of oxygen, the lithium-oxygen batteries are currently the subject of much scientific investigation because of their potential for extremely high energy density. The electrocatalytic materials for them have been extensively researched during the past decade. Even though they are a key component in the lithium-oxygen batteries, however, the study of electrolytes is still in its primary stage. Electrolytes have an important influence on the electrochemical performance of lithium-oxygen batteries, especially on their cycling stability and rate capacity. Therefore, it is important to select an ideal electrolyte with excellent stability against attack by reaction intermediates, along with excellent oxygen solubility and diffusivity. In this review, the physicochemical and electrochemical properties of organic electrolytes for lithium-oxygen batteries are discussed and compared. Furthermore, possible research directions are proposed for the development of an ideal electrolyte for enhanced electrochemical performance. Disciplines Engineering | Physical Sciences and Mathematics Publication DetailsGuo, H., Luo, W., Chen, J., Chou, S., Liu, H. & Wang, J. (2018 Figure 1. Unlike the intercalation mechanism of lithium-ion batteries or sodium-ion batteries, the Li-O 2 battery systems employ a dissolution/ deposition reaction with an air electrode that uses oxygen as the cathode electrode during the electrochemical processes. Research on the Li-O 2 battery is complicated by the need for exposure the air cathode to O 2 atmosphere.Many advances have been achieved, which include advances on cathode materials, electrolytes, anode materials, and redox mediators. [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24] Several excellent reviews have been published to summarize recent developments and our current understanding of Li-O 2 batteries, especially with respect to the cathode electrocatalytic materials. [25][26][27][28][29][30][31][32][33][34][35] These reviews have comprehensively discussed the relationship between the structure of electrocatalytic materials and the electrochemical performance of Li-O 2 batteries. There are, however, few reviews focused on the effects of different electrolytes on the electrochemical performance of the Li-O 2 batteries. [36][37][38] For the aqueous Li-O 2 batteries, LiOH is generated or oxidized at the cathode during discharge and charge processes because H 2 O and O 2 are involved in the reactions. In the case of the nonaqueous Li-O 2 batteries, there are two essential processes that determine their electrochemical performance: the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER). During the ORR process, the Li 2 O 2 is precipitated as the final discharge product on the air cathode, while during the OER process, Li 2 O 2 is then decomposed and the O 2 is regenerated. Therefore, there are huge differences between aqueous and nonaqueous Li-O 2 batteries. Since the nonaqueous Li-O 2 batteries have dominated ...

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Some Possible Approaches for Improving the Energy Density of Li-Air Batteries

Cited by 138 publications

References 18 publications

Rate-Dependent Morphology of Li₂O₂ Growth in Li–O₂ Batteries

Rate-Dependent Morphology of Li₂O₂ Growth in Li–O₂ Batteries

A Review of Model-Based Design Tools for Metal-Air Batteries

Review of Electrolytes in Nonaqueous Lithium–Oxygen Batteries

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Some Possible Approaches for Improving the Energy Density of Li-Air Batteries

Cited by 138 publications

References 18 publications

Rate-Dependent Morphology of Li2O2 Growth in Li–O2 Batteries

Rate-Dependent Morphology of Li2O2 Growth in Li–O2 Batteries

A Review of Model-Based Design Tools for Metal-Air Batteries

Review of Electrolytes in Nonaqueous Lithium–Oxygen Batteries

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Product

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Rate-Dependent Morphology of Li₂O₂ Growth in Li–O₂ Batteries

Rate-Dependent Morphology of Li₂O₂ Growth in Li–O₂ Batteries