The Effect of Stress on Battery-Electrode Capacity

Bucci, Giovanna; Swamy, Tushar; Bishop, Sean R.; Sheldon, Brian W.; Chiang, Yet‐Ming; Carter, W. Craig

doi:10.1149/2.0371704jes

Cited by 118 publications

(71 citation statements)

References 81 publications

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“…136,138,139 Metallic heterogeneities are the root cause for developing electrical hot spots which may lead to electrical shorting failure mechanisms, 138,139 by potentially propagating pre-existing defects at the anode-SSE interface. 135 Coulombic efficiency is also negatively influenced by physical stranding of inaccessible metal caused by non-uniform plating and a low density microstructure, aptly described in the literature as 'dead Li'. 140,141 A distribution of current density will manifest as a distribution of C-rates, which may create a spectrum in depth of discharge within the cathode.…”

Section: Solid Electrolyte Interfacesmentioning

confidence: 99%

Review—Practical Challenges Hindering the Development of Solid State Li Ion Batteries

Kerman

Luntz

Viswanathan

et al. 2017

J. Electrochem. Soc.

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562

471

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Solid state electrolyte systems boasting Li + conductivity of >10 mS cm −1 at room temperature have opened the potential for developing a solid state battery with power and energy densities that are competitive with conventional liquid electrolyte systems. The primary focus of this review is twofold. First, differences in Li penetration resistance in solid state systems are discussed, and kinetic limitations of the solid state interface are highlighted. Second, technological challenges associated with processing such systems in relevant form factors are elucidated, and architectures needed for cell level devices in the context of product development are reviewed. Specific research vectors that provide high value to advancing solid state batteries are outlined and discussed. Solid state battery systems are of great interest because of potential benefits in gravimetric and volumetric energy density, operable temperature range, and safety in comparison to traditional liquid electrolyte based systems. However, unresolved fundamental issues remain in the quest to fully understand the behavior of all-solid batteries, especially in the area of electrochemical interfaces.1 There are also a number of significant engineering challenges that require methodical effort to enable a tangible product. Some transitions from academic laboratories to entrepreneurial efforts attempting to overcome these challenges remain unsuccessful in efforts to bring a product to the market.2,3 Vital parameters that require robust understanding from a product development standpoint are material cost, cell lifetime and shelf life, cell energy density on a volumetric and gravimetric basis, operable capabilities for given temperature conditions, and safety. The advantage of energy density remains to be realized in solid state electrolytes (SSEs) since most studies to date utilize thick SSEs or cathodes with low active loading compared to liquid counterparts. 4,5 Furthermore, the desire to use SSEs in conjunction with Li metal anodes requires understanding and managing the morphology of Li metal plating, which can impact volumetric energy density. Operation at both higher and lower temperature compared to conventional technologies is a significant potential advantage of SSE systems. However, reports of solid state cells achieving parity with traditional systems at room temperature or any other temperature do not currently exist. The safety, specifically decreased flammability, of SSE systems is another potential advantage but requires ongoing validation and study.6 Unlike current liquid electrolyte systems, 7 the manufacturability and material component costs of SSEs have not been well characterized, and thus the value of these features will need to be weighed accordingly with any added cost. Operating lifetime of SSEs capturing intrinsic materials parameters such as voltage stability, 8 as well as catastrophic failure modes such as shorting, 9 have been briefly investigated, but in the absence of high energy density electrode formulations and appli...

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Section: Solid Electrolyte Interfacesmentioning

confidence: 99%

Review—Practical Challenges Hindering the Development of Solid State Li Ion Batteries

Kerman

Luntz

Viswanathan

et al. 2017

J. Electrochem. Soc.

Self Cite

562

471

View full text Add to dashboard Cite

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“…The close contact at the SE/electrode interface and densely packing in the electrode are not maintained for such active materials due to the formation of crack and void with the volume change during charge-discharge cycling. It was reported that an increase in compressive pressure of ASS-cell using silicon and Li electrodes to keep the interface contact improved the cycle performance, but the capacity was decreased due to the limitation of reactions 15,16 .…”

Section: Introductionmentioning

confidence: 99%

High capacity and stable all-solid-state Li ion battery using SnO2-embedded nanoporous carbon

Notohara

Urita

Yamamura

et al. 2018

Sci Rep

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Extensive research efforts are devoted to development of high performance all-solid-state lithium ion batteries owing to their potential in not only improving safety but also achieving high stability and high capacity. However, conventional approaches based on a fabrication of highly dense electrode and solid electrolyte layers and their close contact interface is not always applicable to high capacity alloy- and/or conversion-based active materials such as SnO2 accompanied with large volume change in charging-discharging. The present work demonstrates that SnO2-embedded nanoporous carbons without solid electrolyte inside the nanopores are a promising candidate for high capacity and stable anode material of all-solid-state battery, in which the volume change reactions are restricted in the nanopores to keep the constant electrode volume. A prototype all-solid-state full cell consisting of the SnO2-based anode and a LiNi1/3Co1/3Mn1/3O2-based cathode shows a good performance of 2040 Wh/kg at 268.6 W/kg based on the anode material weight.

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“…To this end, a kinetic Monte Carlo (KMC) model is developed to describe the Li-ion diffusion kinetics during discharge for a nanoscale system consisting of electrolyte and cathode material. KMC is capable of describing diffusion and chemical reactions at the interface.19-21 Moreover, finite element method (FEM) is widely used to analyze the stress in Li-ion batteries, 22,23 and thus, FEM is employed to obtain the stress filed caused by the volume strain of the active material. In particular, we focus on the effects of electrode particle size on the discharge performance, and the stress role in battery performance is also explicitly elucidated.…”

mentioning

confidence: 99%

Mesoscale Analysis of the Electrolyte-Electrode Interface in All-Solid-State Li-Ion Batteries

Feng

Mukherjee

2018

J. Electrochem. Soc.

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Electrolyte-electrode interface plays a critical role in the electrochemical performance of all-solid-state Li-ion batteries. In this work, a mesoscale study is presented to investigate lithium transport and stress in the solid electrolyte based positive electrode during discharge. It is found that increasing electrolyte-electrode interface contact facilitates Li intercalation into the electrode and alleviates the stresses in both the electrode and the electrolyte. Using small electrode particles helps to improve rate capability and avoid interfacial failures due to the volume change of electrode particles. Interface stress strongly depends on the mechanical properties of the two components. In addition, this study demonstrates the importance of electrolyte network through the porous active particle backbone. Li-ion batteries have attracted intensive research interest because of the emerging demand for energy storage devices, and energy density has primarily driven the technological advance of lithium-ion batteries.1,2 Recently, increasing efforts are directed to developing allsolid-state Li-ion batteries, which possess prominent advantages over liquid electrolyte based Li-ion batteries.3-5 Replacing the flammable organic electrolyte with solid electrolyte can improve battery safety by reducing the risk of fire and explosion. For all-solid-state batteries, the mitigation of dendritic growth enables the batteries to use Li metal anode over extended cycling, resulting in high specific capacities and operating voltages. In the literature, various solid electrolytes are used as Li-ion conductors. An electronically insulating electrolyte should have high Liion permeability to enhance Li transport kinetics, as well as the high stiffness to resist the dendritic propagation through electrolyte. The widely investigated electrolytes include polymer polyethylene oxide (PEO), NASICON-type electrolytes, garnet-type electrolytes, and sulfides. [7][8][9] In general, the sulfide electrolytes have high ionic conductivities but low chemical stabilities, which are sensitive to moisture. In contrast, garnet-type electrolytes present the most stable interface with Li metal anodes, which are anticipated to be promising electrolytes to achieve high energy densities. 10Despite the remarkable progress, all-solid-state batteries still face key challenges. Among them, the solid electrolyte-electrode interface is the bottleneck for Li transport. 11,12 The high interfacial resistance between the solid electrolyte and electrode render the charge transfer and Li transport very slow, and thus, it limits the electrochemical performance of all-solid-state Li-ion batteries. Using nuclear magnetic resonance spectroscopy, Yu et al. reported that the electrolyteelectrode Li 6 PS 5 Cl-Li 2 S interface is the dominant factor responsible for the restricted power performance. 13 To improve the interfacial transfer, in addition to interlayer coatings, 14 Sharafi et al. found that the interfacial resistance of Li-Li 7 La 3 Zr 2 O 12 can be dramatically re...

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The Effect of Stress on Battery-Electrode Capacity

Cited by 118 publications

References 81 publications

Review—Practical Challenges Hindering the Development of Solid State Li Ion Batteries

Review—Practical Challenges Hindering the Development of Solid State Li Ion Batteries

High capacity and stable all-solid-state Li ion battery using SnO2-embedded nanoporous carbon

Mesoscale Analysis of the Electrolyte-Electrode Interface in All-Solid-State Li-Ion Batteries

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