Fast-charging capability of lithium-ion cells: Influence of electrode aging and electrolyte consumption

Sieg, Johannes; Schmid, Alexander; Rau, Laura; Gesterkamp, Andreas; Storch, Mathias; Spier, Bernd; Birke, Kai Peter; Sauer, Dirk Uwe

doi:10.1016/j.apenergy.2021.117747

Cited by 31 publications

(24 citation statements)

References 65 publications

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“…[8,9] Even without Li plating, the accelerated capacity fade and impedance growth (i.e., power loss) are still unavoidable in fast charging. [9,10] This suggests that there must be other sources leading to performance degradation. Our recent work [11] unveiled that the failure of SEI on the graphite surface is one of the major causes because the SEI is mechanically unable to withstand rapid expansion in the volume of graphite particles during fast charging, which results in exfoliation of the graphite structure, and progressive formation and growth of the SEI.…”

Section: Graphite Anodementioning

confidence: 99%

The Puzzles in Fast Charging of Li‐Ion Batteries

Zhang

2022

Energy & Environ Materials

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Fast charging of Li‐ion cells faces two aspects of challenges, 1) accelerated capacity fade and 2) inferior charging capability. It is commonly believed that the former is due to Li plating and its resultant reactions with electrolyte at the graphite anode, which results in a loss in the inventory of Li+ ions and an increase in the cell’s impedance. While the latter is ascribed to the high voltage polarization in relation to the slow transport of Li+ ions between two electrodes. However, there are many other hidden facts that essentially affect the fast charging performances of Li‐ion cells. This commentary intends, from the view of materials, to uncover these hidden factors, including failure of the solid electrolyte interphase and exfoliation of the graphite structure at the anode, structural degradation of the Ni‐rich layered cathode materials, as well as the high solvation and desolvation activation energies of Li+ ions in the electrolyte. Meanwhile, some solutions to the fast‐charging problems of Li‐ion cells are proposed based on the understanding of these hidden factors.

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Section: Graphite Anodementioning

confidence: 99%

The Puzzles in Fast Charging of Li‐Ion Batteries

Zhang

2022

Energy & Environ Materials

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“…The low‐molecular weight solvents were demonstrated to be suitable candidates for fast‐charge electrolytes and electrolyte transport was considered to be more important than the lithium de‐solvation behavior in fast‐chargeprocess. Besides, by investigating the influence of electrode aging and electrolyte consumption to the high‐rate charging capability of pouch cells, Sieg et al [6] . proved the main factor that influence the fast‐charging process was the electrolyte consumption but not the electrodes aging.…”

Section: Fast‐charge Electrolytesmentioning

confidence: 99%

“…Especially, with the ever-increasing demands for EVs, HEVs and defense applications in extremely harsh conditions, developing advanced electrolytes with appealing performance in high-voltage and fast-charge aspects is highly desirable. [5,6] Although the high-voltage property is relevant to cathodes, anodes and some other components in the battery, the function of electrolytes are believed to the dominate one. On the one hand, the stability of electrolytes and the matching to electrodes decide the high-voltage application of LIBs.…”

Section: Introductionmentioning

confidence: 99%

“…Obviously, the evolutionary process of electrolytes is not only motivation but also bottleneck technology for LIBs. Especially, with the ever‐increasing demands for EVs, HEVs and defense applications in extremely harsh conditions, developing advanced electrolytes with appealing performance in high‐voltage and fast‐charge aspects is highly desirable [5,6] …”

Section: Introductionmentioning

confidence: 99%

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High‐Voltage and Fast‐Charge Electrolytes for Lithium‐Ion Batteries

Wan

Xiao

et al. 2022

Batteries & Supercaps

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Lithium-ion batteries (LIBs) with high energy density and fastcharge capability are urgently required for the ever-growing demands for electric vehicles and hybrid electric vehicles. To achieve this demand, as one of the important components, electrolytes are required to work well at a high voltage to fulfill the good performance of high energy density batteries and facilitate the fast-charge process. In this review, we mainly focus on the electrolytes design for LIBs under high-voltage and fast-charge conditions. The bottlenecks and the typical resolving strategies referring to lithium salts, solvents, solid electrolyte interface, additives and solvent structures in electrolytes are presented in detail. Finally, we propose the challenges regarding electrolytes design insight and inspiration for LIBs under the two conditions to give a better guide for the rationale design of the high energy density and fast-charge devices in the future applications.

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“…The fast‐charging capability of the batteries is mainly limited by the lithium (Li) plating of anodes and the structural instability of cathodes [5] . Under fast‐charging conditions, the dramatically increased overpotential originating from the sluggish Li + transport kinetics leads to the Li plating on the anodes, which subsequently causes the continuous Li dendrite growth and electrolyte decomposition, [6] eventually resulting in low Coulombic efficiency (CE) and internal short circuit of the batteries [7] . Fast‐charging also exacerbates the structural degradation of transition metal oxide cathodes, mainly including transition metal dissolution, oxygen release, and irreversible structural transformation [8] .…”

Section: Introductionmentioning

confidence: 99%

Fast‐Charging Strategies for Lithium‐Ion Batteries: Advances and Perspectives

Zhao

Song

2022

ChemPlusChem

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Rapid development of high-energy-density lithium-ion batteries (LIBs) enables the sufficient driving range of electric vehicles (EVs). However, the slow charging speed restricts the popularization of EVs. Commitment to fast-charging research is considered to be the key to advance the EVs strategy. This Review discusses the kinetic factors limiting the fast-charging capability at the material aspects, and summarizes the recent research strategies to achieve fast-charging performance of high-energy-density LIBs through electrode engineering, electrolyte design, and interface optimization. The increasingly important role of computational tools and advanced characterization techniques in fundamentally understanding the failure mechanism of LIBs is emphasized, and the analysis of the thermal runaway problem in the fast-charging process and the corresponding thermal optimization scheme is also involved to give the guidance for the more rational battery design. In view of these factors and strategies, some future perspectives for realizing high-performance fast-charging LIBs are proposed, which are expected to facilitate the large-scale application of fast-charging LIBs in EVs.

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Fast-charging capability of lithium-ion cells: Influence of electrode aging and electrolyte consumption

Cited by 31 publications

References 65 publications

The Puzzles in Fast Charging of Li‐Ion Batteries

The Puzzles in Fast Charging of Li‐Ion Batteries

High‐Voltage and Fast‐Charge Electrolytes for Lithium‐Ion Batteries

Fast‐Charging Strategies for Lithium‐Ion Batteries: Advances and Perspectives

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