Current constriction of Li-ion transport across lithium metal–ceramic electrolyte interface: Imaged with X-ray Tomography

Badran, Aly; Clemenceau, Thomas; Andriamady, Niriaina; Marshall, David B.; Raj, Rishi

doi:10.1557/s43579-021-00027-x

Cited by 6 publications

(2 citation statements)

References 22 publications

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“…[51][52][53][54] Furthermore, Krauskopf et al performed a microstructural analysis of the interface region and identified pores for stack pressures smaller than 400 MPa. [60][61][62][63][64] Both pieces of information demonstrate that the experimental results fulfill the assumption underlying the hierarchical scheme previously presented.…”

Section: Evaluating the Effect Of Individual Interface Processes Betw...supporting

confidence: 80%

Guidelines for Impedance Analysis of Parent Metal Anodes in Solid‐State Batteries and the Role of Current Constriction at Interface Voids, Heterogeneities, and SEI

Eckhardt

Fuchs

Burkhardt

et al. 2023

Adv Materials Inter

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Impedance spectroscopy is widely used in operando studies of solid‐state batteries for characterizing charge transport and correlating it with structural features. A typical impedance spectrum reveals, in addition to transport signals of the solid electrolyte, one or more contributions due to processes taking place at the electrode interfaces. The focus of this study is on reversible (parent) metal anodes and a 3D electric network model is used to analyze the variation of their impedance as a function of pressure, temperature, or aging during cycling. This provides a recipe for experimentalists on how to identify impedance contributions arising from different interface effects, such as, charge transfer, dynamic current constriction, and solid electrolyte interphase formation. Rules are derived for assigning the different interface signals or identifying the dominant contribution in case of similar frequency‐dependence and a standard procedure for analysis is proposed. The suggested procedure is applied to experimental data of half cells where lithium metal is in contact with garnet‐type Li6.25Al0.25La3Zr2O12. This case study yields unambiguously that geometric current constriction due to morphological instabilities at the metal anode interface during cycling is the rate‐limiting step for this type of metal anode, rather than the frequently assumed polarization resistance of the electric charge transfer migration process.

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Section: Evaluating the Effect Of Individual Interface Processes Betw...supporting

confidence: 80%

Guidelines for Impedance Analysis of Parent Metal Anodes in Solid‐State Batteries and the Role of Current Constriction at Interface Voids, Heterogeneities, and SEI

Eckhardt

Fuchs

Burkhardt

et al. 2023

Adv Materials Inter

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show abstract

“…Due to the limitations in signal acquisition depth, traditional characterization tools are difficult to achieve high-resolution and direct observation of SSLMBs. Fortunately, with the development of technology and equipment, there are various non-destructive in situ techniques to observe solid/solid interfaces including in situ SEM observations, 182 X-ray computed tomography, 183 operando neutron depth profiling, 184 and atomic force microscopy. 185 Yang et al traced and monitored the Au/LLZO interface by in situ SEM technique, and found that the intrinsic defects of poly-crystalline electrolytes such as pores, grain boundaries, and impurities were the critical factors that caused non-uniform Li deposition.…”

Section: Comprehensive Research Toolsmentioning

confidence: 99%

Optimization strategies for key interfaces of LLZO-based solid-state lithium metal batteries

Chu,

Li,

Wang

et al. 2024

Mater. Chem. Front.

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Stack Pressure and Critical Current Density in Li-metal Cells: The Role of Mechanical Deformation

Raj

2021

Acta Materialia

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Current constriction of Li-ion transport across lithium metal–ceramic electrolyte interface: Imaged with X-ray Tomography

Cited by 6 publications

References 22 publications

Guidelines for Impedance Analysis of Parent Metal Anodes in Solid‐State Batteries and the Role of Current Constriction at Interface Voids, Heterogeneities, and SEI

Guidelines for Impedance Analysis of Parent Metal Anodes in Solid‐State Batteries and the Role of Current Constriction at Interface Voids, Heterogeneities, and SEI

Optimization strategies for key interfaces of LLZO-based solid-state lithium metal batteries

Stack Pressure and Critical Current Density in Li-metal Cells: The Role of Mechanical Deformation

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