Introduction and application of formation methods based on serial-connected lithium-ion battery cells

Müller, Verena; Kaiser, Rudi; Poller, Silvan; Sauerteig, Daniel; Schwarz, R.; Wenger, M.; Lorentz, V.R.H.; März, Martin

doi:10.1016/j.est.2017.09.013

Cited by 12 publications

(6 citation statements)

References 19 publications

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“…A variety of fast formation strategies have been studied in academic literature, which employ some combination of rapid charge-discharge cycles, restricted voltage windows, and optimized temperature. 10,[15][16][17][18][19][20][21][22][23][24][25][26] Recent studies have shown that formation time can be decreased while preserving battery lifetime, 16,22,25 although conclusions remain tenuous due to the limited sample sizes typically used.…”

Section: Introductionmentioning

confidence: 99%

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Predicting the impact of formation protocols on battery lifetime immediately after manufacturing

Weng

Mohtat

Attia

et al. 2021

Joule

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Section: Introductionmentioning

confidence: 99%

“…18 Ah, corresponding to less than 50% capacity remaining. The total test time varied between 3 to 4 months and the total cycles achieved ranged between 400 and 600 cycles.…”

mentioning

confidence: 99%

Predicting the impact of formation protocols on battery lifetime immediately after manufacturing

Weng

Mohtat

Attia

et al. 2021

Joule

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“…6,[8][9][10][11] As formation impacts these key battery metrics, designing rapid yet effective formation protocols is an important and active area of research. [12][13][14][15][16][17][18][19][20] A deeper understanding of formation cycle reactions will aid in these optimization efforts.…”

mentioning

confidence: 99%

Benefits of Fast Battery Formation in a Model System

Attia

Harris

Chueh

2021

J. Electrochem. Soc.

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Lithium-ion battery formation affects battery cost, energy density, and lifetime. An improved understanding of the first cycle of solid-electrolyte interphase (SEI) growth on carbonaceous negative electrodes could aid in the design of optimized formation protocols. In this work, we systematically study SEI growth during the formation of carbon black negative electrodes in a standard carbonate electrolyte. We show that the initial ethylene carbonate (EC) reduction reaction occurs at ∼0.5-1.2 V during the first lithiation, except under fast lithiation rates (⩾10C). The products of this EC reduction reaction do not passivate the electrode; only the SEI formed at lower potentials affects the second-cycle Coulombic efficiency. Thus, cycling quickly through the voltage regime of this reaction can decrease both formation time and first-cycle capacity loss, without an increase in subsequent-cycle capacity loss. We also show that the capacity consumed by this reaction is minimized at low temperatures and low salt concentrations. Finally, we discuss the mechanism behind our experimental results. This work reveals the fundamental processes underlying initial SEI growth on carbonaceous negative electrodes and provides insights for both optimizing the battery formation process and enabling novel electrolytes.

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“…In addition to traditional metrics such as half‐cell charge capacity and coulombic efficiency, post‐cycle tests such as EIS can quickly determine interfacial impedance after a defined number of cycles to simplify the task of screening suitable formation parameters for each electrode/electrolyte combination. Since formation is the most cost‐intensive step in commercial Li‐ion battery production,[ 220 , 221 ] advances in this process are also likely to be essential for the development of economically competitive Na‐ion batteries.…”

Section: Electrode Pre‐treatmentmentioning

confidence: 99%

Process‐Structure‐Formulation Interactions for Enhanced Sodium Ion Battery Development: A Review

Sawhney

Wahid²,

Griffin

et al. 2022

ChemPhysChem

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Before the viability of a cell formulation can be assessed for implementation in commercial sodium ion batteries, processes applied in cell production should be validated and optimized. This review summarizes the steps performed in constructing sodium ion (Na‐ion) cells at research scale, highlighting parameters and techniques that are likely to impact measured cycling performance. Consistent process‐structure‐performance links have been established for typical lithium‐ion (Li‐ion) cells, which can guide hypotheses to test in Na‐ion cells. Liquid electrolyte viscosity, sequence of mixing electrode slurries, rate of drying electrodes and cycling characteristics of formation were found critical to the reported capacity of laboratory cells. Based on the observed importance of processing to battery performance outcomes, the current focus on novel materials in Na‐ion research should be balanced with deeper investigation into mechanistic changes of cell components during and after production, to better inform future designs of these promising batteries.

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Introduction and application of formation methods based on serial-connected lithium-ion battery cells

Cited by 12 publications

References 19 publications

Predicting the impact of formation protocols on battery lifetime immediately after manufacturing

Predicting the impact of formation protocols on battery lifetime immediately after manufacturing

Benefits of Fast Battery Formation in a Model System

Process‐Structure‐Formulation Interactions for Enhanced Sodium Ion Battery Development: A Review

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