Impact of electrochemical and mechanical interactions on lithium-ion battery performance investigated by operando dilatometry

Daubinger, Philip; Ebert, Fabian; Hartmann, Sarah; Giffin, Guinevere A.

doi:10.1016/j.jpowsour.2021.229457

Cited by 39 publications

(25 citation statements)

References 58 publications

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“…At the end of the measurement, the average dilatation is 10.2 %, similar to Cañas et al [17] In operando dilatometer experiments, a comparable dilatation was observed for graphite electrodes. [30] The dilatation of electrodes is not only influenced by the dilatation of the crystal structure but also by the complex porous microstructure of the electrode. [31] However, operando XRD measurements can give a first approximation on the dilatation that electrodes experience during lithiation.…”

Section: Operando Xrd With C/20mentioning

confidence: 99%

Understanding the Influence of Temperature on Phase Evolution during Lithium‐Graphite (De‐)Intercalation Processes: An Operando X‐ray Diffraction Study

et al. 2021

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Knowing the phase evolution behavior of battery materials is important for optimizing the operating conditions and understanding the aging behavior of the material. Phase changes of state-of-the-art battery materials at room temperature are well understood, but the influence of temperature on the phase evolution is barely investigated. In this study, operando X-ray diffraction (XRD) is applied for the observation of phase changes of graphite during cycling at different temperatures. The phase evolution is altered at lower temperatures (0 °C) compared to room temperature due to slower kinetics and diffusion rates even at low current rates of C/20. Differences in phase evolution between charge and discharge are more pronounced at 0 °C compared to higher temperatures. During delithiation at 43 °C, the formation of stage 2L is more distinct than at 25 °C whereas at 0 °C, no stage 2L formation is observed. However, at 0 °C, several phases co-exist, supporting the theory of the shrinking annuli mechanism for phase evolution during (de-)lithiation of graphite.

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Section: Operando Xrd With C/20mentioning

confidence: 99%

Understanding the Influence of Temperature on Phase Evolution during Lithium‐Graphite (De‐)Intercalation Processes: An Operando X‐ray Diffraction Study

et al. 2021

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“…Currently, the embedded materials include carbon-based, transition metal oxides, nanometal, and intermetallic compounds. After these embedded materials are combined with electrode materials, the battery has excellent stability, high battery capacity, and a fast ion diffusion rate, which greatly improves the electrochemical performance of the battery. − …”

Section: Introductionmentioning

confidence: 99%

Review on Action Mechanism and Characterization of Natural/Artificial Solid Electrolyte Interphase of Lithium Battery: Latest Progress and Future Directions

et al. 2023

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At present, the basic structure and mechanism of solid electrolyte interface (SEI) have been studied based on different models. Although many researchers have observed the characteristics and properties of SEI through various characterization methods, it is still unable to explain its dynamic mechanism of action from the very small microscopic level. Among them, most researchers change the electrochemical performance of batteries by adding additives or material coating. Traditional research methods only state the performance of batteries from the appearance but lack detailed analysis of the electrochemical reaction of batteries during the research process. Based on the analysis of some models established by SEI, this study summarized the analysis of the research angle of SEI film through various characterization methods. The present traditional SEI and artificial SEI are introduced. Finally, the methods to improve the chemical performance of lithium battery and the challenges to solve the problems are summarized and prospected.

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“…Based on this approach, we propose in this work to compare the porosity evolution at anode level when cycling in pouch cell at various constant pressures and in cylindrical hard casing. Different groups have already investigated the pressure impact on cell capacity retention [8][9][10][11][12] or the anode morphology evolution [13,14]. It is generally assumed that active material expansion leads to both anode swelling and porosity accommodation, which generate stress on other components [7,[15][16][17] and anode cracks and delamination [18,19].…”

Section: Introductionmentioning

confidence: 99%

Si–C/G based anode swelling and porosity evolution in 18650 casing and in pouch cell

Vidal

Leys

Benoit

et al. 2021

Journal of Power Sources

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Impact of electrochemical and mechanical interactions on lithium-ion battery performance investigated by operando dilatometry

Cited by 39 publications

References 58 publications

Understanding the Influence of Temperature on Phase Evolution during Lithium‐Graphite (De‐)Intercalation Processes: An Operando X‐ray Diffraction Study

Understanding the Influence of Temperature on Phase Evolution during Lithium‐Graphite (De‐)Intercalation Processes: An Operando X‐ray Diffraction Study

Review on Action Mechanism and Characterization of Natural/Artificial Solid Electrolyte Interphase of Lithium Battery: Latest Progress and Future Directions

Si–C/G based anode swelling and porosity evolution in 18650 casing and in pouch cell

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