In situ neutron radiography analysis of graphite/NCA lithium-ion battery during overcharge

Same, Adam; Battaglia, Vincent; Tang, Hong-Yue; Park, Jae Wan

doi:10.1007/s10800-011-0363-3

Cited by 34 publications

(27 citation statements)

References 30 publications

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“…The faster kinetics of the co-intercalation into graphite is also supported by the smaller increase in the polarization between the charge and discharge with increasing current in Figure 4f. [38,39] The fast insertion kinetics of the co-intercalation in graphite can be considered a merit to prevent such situations. At the 1 A g −1 rate, the polarization between the charge and discharge was as low as 0.3 V for the co-intercalation, which is only half of the value for the normal lithium ion intercalation.…”

Section: Resultsmentioning

confidence: 99%

Exploiting Lithium–Ether Co‐Intercalation in Graphite for High‐Power Lithium‐Ion Batteries

Kim

Lim

Yoon

et al. 2017

Advanced Energy Materials

142

132

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The intercalation of lithium ions into graphite electrode is the key underlying mechanism of modern lithium‐ion batteries. However, co‐intercalation of lithium‐ions and solvent into graphite is considered undesirable because it can trigger the exfoliation of graphene layers and destroy the graphite crystal, resulting in poor cycle life. Here, it is demonstrated that the [lithium–solvent]+ intercalation does not necessarily cause exfoliation of the graphite electrode and can be remarkably reversible with appropriate solvent selection. First‐principles calculations suggest that the chemical compatibility of the graphite host and [lithium–solvent]+ complex ion strongly affects the reversibility of the co‐intercalation, and comparative experiments confirm this phenomenon. Moreover, it is revealed that [lithium–ether]+ co‐intercalation of natural graphite electrode enables much higher power capability than normal lithium intercalation, without the risk of lithium metal plating, with retention of ≈87% of the theoretical capacity at current density of 1 A g−1. This unusual high rate capability of the co‐intercalation is attributed to the (i) absence of the desolvation step, (ii) negligible formation of the solid–electrolyte interphase on graphite surface, and (iii) fast charge‐transfer kinetics. This work constitutes the first step toward the utilization of fast and reversible [lithium–solvent]+ complex ion intercalation chemistry in graphite for rechargeable battery technology.

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Section: Resultsmentioning

confidence: 99%

Exploiting Lithium–Ether Co‐Intercalation in Graphite for High‐Power Lithium‐Ion Batteries

Kim

Lim

Yoon

et al. 2017

Advanced Energy Materials

142

132

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“…Unfortunately, in situ measurements of lithium concentrations are very difficult. The few successful efforts use neutron imaging on custom-made and test-specific cells, such as [42], [43], [44]. In this manuscript, we apply the observer to the DFN model (1)- (21).…”

Section: Simulationsmentioning

confidence: 99%

Battery State Estimation for a Single Particle Model With Electrolyte Dynamics

Moura

Argomedo

Klein

et al. 2017

IEEE Trans. Contr. Syst. Technol.

308

188

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Abstract-This paper studies a state estimation scheme for a reduced electrochemical battery model, using voltage and current measurements. Real-time electrochemical state information enables high-fidelity monitoring and high-performance operation in advanced battery management systems, for applications such as consumer electronics, electrified vehicles, and grid energy storage. This paper derives a single particle model with electrolyte (SPMe) that achieves higher predictive accuracy than the single particle model (SPM). Next, we propose an estimation scheme and prove estimation error system stability, assuming the total amount of lithium in the cell is known. The state estimation scheme exploits dynamical properties such as marginal stability, local invertibility, and conservation of lithium. Simulations demonstrate the algorithm's performance and limitations.

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“…The factors that cause lithium plating can be related to: (i) harsh cell operating conditions (e.g., low temperature, strenuous charge, overcharge) [17][18][19][20], (ii) cell constructive defects (e.g., poor cell balance, geometric misfits and poor electrolyte formulation) [13,21,22], and (iii) conventional aging of the battery (leading to cell unbalance and/or kinetic degradation) [23][24][25][26]. Under lithium plating occurrence, it is also possible that part of the metallic lithium deposited on the anode during charge is recovered as active lithium during the subsequent discharge [13,21,[27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Operando lithium plating quantification and early detection of a commercial LiFePO4 cell cycled under dynamic driving schedule

Anseán

Dubarry

Devie

et al. 2017

Journal of Power Sources

197

129

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Lithium plating is considered one of the most detrimental phenomenon in lithium ion batteries (LIBs), as it increases cell degradation and might lead to safety issues. Plating induced LIB failure presents a major concern for emerging applications in transportation and electrical energy storage.Hence, the necessity to operando monitor, detect and analyze lithium plating becomes critical for safe and reliable usage of LIB systems. Here, we report in situ lithium plating analyses for a commercial graphite||LiFePO 4 cell cycled under dynamic stress test (DST) driving schedule. We designed a framework based on incremental capacity (IC) analysis and mechanistic model simulations to quantify degradation modes, relate their effects to lithium plating occurrence and assess cell degradation. The results show that lithium plating was induced by large loss of active material on the negative electrode that eventually led the electrode to over-lithiate. Moreover, when lithium plating emerged, we quantified that the loss of lithium inventory pace was increased by a factor of four. This study illustrates the benefits of the proposed framework to improve lithium plating analysis. It also discloses the symptoms of lithium plating formation, which prove valuable for novel, online strategies on early lithium plating detection.

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In situ neutron radiography analysis of graphite/NCA lithium-ion battery during overcharge

Cited by 34 publications

References 30 publications

Exploiting Lithium–Ether Co‐Intercalation in Graphite for High‐Power Lithium‐Ion Batteries

Exploiting Lithium–Ether Co‐Intercalation in Graphite for High‐Power Lithium‐Ion Batteries

Battery State Estimation for a Single Particle Model With Electrolyte Dynamics

Operando lithium plating quantification and early detection of a commercial LiFePO4 cell cycled under dynamic driving schedule

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