A Guide to Making Highly Reproducible Li-Ion Single-Layer Pouch Cells for Academic Researchers

Garayt, Matthew D. L.; Johnson, Michel B.; Laidlaw, Lauren; McArthur, Mark A.; Trussler, Simon; Harlow, Jessie E.; Dahn, J. R.; Yang, Chongyin

doi:10.1149/1945-7111/aceffc

Cited by 10 publications

(1 citation statement)

References 10 publications

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“…Calendar and cycle life testing always give better quantitative estimates in larger Ah cell configurations like cylindrical/pouch/prismatic cells manufactured using semiautomated assembly lines as compared to handmade coin cells. 97 Furthermore, the extrapolation of calendar lifetime does not account for capacity knees with long duration testing that can occur from electrolyte dryout, gas generation leading to inaccessible electrode active material etc. 98 Our analysis did not include LAM explicitly, which is a relevant aging mechanism for silicon, especially when the cell is cycled which happens during the reference performance tests.…”

Section: Deconvolution Of Hold Capacity Into Reversible and Irreversi...mentioning

confidence: 99%

Significant Improvements to Si Calendar Lifetime Using Rapid Electrolyte Screening via Potentiostatic Holds

Verma,

Schulze,

Colclasure

et al. 2024

J. Electrochem. Soc.

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Silicon-based lithium-ion batteries exhibit severe time-based degradation resulting in poor calendar lives. This has been identified as the major impediment towards commercialization with cycle life considered a solved issue through nanosizing and protective coatings allowing over 1000 cycles of life to be achieved. In this work, rapid screening of sixteen electrolytes for calendar life extension of Si-rich systems (70 wt% Si) is performed using the voltage hold (V-hold) protocol. V-hold significantly shortens the testing duration over the traditional open circuit voltage reference performance test allowing us to screen electrolytes within a span of two months. We find a novel ethylene carbonate (EC) free electrolyte formulation containing lithium hexafluorophosphate (LiPF6) salt, and binary solvent mix of fluoroethylene carbonate, ethyl methyl carbonate that extends calendar life of Si cells as compared to conventional EC based electrolyte. Our coupled experimental-theoretical analysis framework provides a decoupling of the parasitic currents during V-hold, allowing us to extrapolate the capacity loss to predict semiquantitative calendar lifetimes. Subsequently, cycle aging and oxidative stability tests of the EC free system also show enhanced performance over baseline electrolyte.

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Section: Deconvolution Of Hold Capacity Into Reversible and Irreversi...mentioning

confidence: 99%

Significant Improvements to Si Calendar Lifetime Using Rapid Electrolyte Screening via Potentiostatic Holds

Verma,

Schulze,

Colclasure

et al. 2024

J. Electrochem. Soc.

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Round‐robin test of all‐solid‐state battery with sulfide electrolyte assembly in coin‐type cell configuration

Beutl,

Orue,

López‐Aranguren

et al. 2024

Electrochemical Science Adv

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The replacement of conventional lithium‐ion batteries with solid‐state batteries is currently under investigation by many players both from academia and industry. Sulfide‐based electrolytes are among the materials that are regarded as most promising, especially for application in the transport sector. The performance of anode, cathode, and solid electrolyte materials of this type of solid electrolyte is typically evaluated using manually assembled cells such as Swagelok cells, EL‐CELLs, and in‐house built pressure devices. Coin cells, however, are often disregarded. Though coin cells cannot accurately predict how a material will perform in an end‐use application battery cell format, they are easy to assemble and can provide reproducible data compared to the other cell types, which make them an interesting option for testing the materials under conditions more relevant for their envisioned application. The coin cell preparation method presented in this work has been evaluated interlaboratory for reproducibility and, in addition, can be modified depending on the optimization parameters of the solid electrolyte, cathode material, bilayer comprised on cathode and solid electrolyte, lithium metal anode, and cell in general. Besides, an interlab round‐robin test (RRT) is carried out between four laboratories, measuring defined electrochemical tests of sulfide solid‐state batteries in coin cell configuration. This RRT for the preparation of coin cell solid‐state batteries with sulfide solid electrolyte, lithium nickel manganese cobalt oxides cathode, and lithium metal anode is intended for academic researchers and provides guidelines of research in this field.

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Multiple strategies from apparatus to synthetic process toward high-performance spherical manganese hexacyanoferrate for sodium-ion batteries

Zheng,

Wang,

Zhang

et al. 2024

Chemical Engineering Journal

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A Guide to Making Highly Reproducible Li-Ion Single-Layer Pouch Cells for Academic Researchers

Cited by 10 publications

References 10 publications

Significant Improvements to Si Calendar Lifetime Using Rapid Electrolyte Screening via Potentiostatic Holds

Significant Improvements to Si Calendar Lifetime Using Rapid Electrolyte Screening via Potentiostatic Holds

Round‐robin test of all‐solid‐state battery with sulfide electrolyte assembly in coin‐type cell configuration

Multiple strategies from apparatus to synthetic process toward high-performance spherical manganese hexacyanoferrate for sodium-ion batteries

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