High critical currents for dendrite penetration and voiding in potassium metal anode solid-state batteries

Dominic Spencer Jolly; Johann Perera; Shengda D. Pu; Dominic L.R. Melvin; Paul Adamson; Peter G. Bruce

doi:10.1007/s10008-022-05225-8

High critical currents for dendrite penetration and voiding in potassium metal anode solid-state batteries

Dominic Spencer Jolly, Johann Perera, Shengda D. Pu, Dominic L.R. Melvin, Paul Adamson, Peter G. Bruce^*

^*Corresponding author for this work

Metallurgy and Materials

Research output: Contribution to journal › Article › peer-review

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Abstract

Potassium metal anode solid-state cells with a K-beta”-alumina ceramic electrolyte are found to have relatively high critical currents for dendrite penetration on charge of approximately 4.8 mA/cm², and voiding on discharge of approximately 2.0 mA/cm², at 20 °C under 2.5 MPa stack-pressure. These values are higher than generally reported in the literature under comparable conditions for Li and Na metal anode solid-state batteries. The higher values for potassium are attributed to its lower yield strength and its readiness to creep under relatively low stack-pressures. The high critical currents of potassium anode solid-state batteries help to confirm the importance of the metal anode mechanical properties in the mechanisms of dendrite penetration and voiding.

Original language	English
Pages (from-to)	1961-1968
Number of pages	8
Journal	Journal of Solid State Electrochemistry
Volume	26
Issue number	9
Early online date	30 Jun 2022
DOIs	https://doi.org/10.1007/s10008-022-05225-8
Publication status	Published - Sept 2022

Bibliographical note

Funding Information:
P.G.B. is indebted to the Faraday Institution All-Solid-State Batteries with Li and Na Anodes (FIRG007, FIRG008), the Engineering and Physical Sciences Research Council (EP/M009521/1) and The Henry Royce Institute for Advanced Materials for financial support (EP/R00661X/1, EP/S019367/1, EP/R010145/1).

Publisher Copyright:
© 2022, The Author(s).

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Electrochemistry
Electrical and Electronic Engineering

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Cite this

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title = "High critical currents for dendrite penetration and voiding in potassium metal anode solid-state batteries",

abstract = "Potassium metal anode solid-state cells with a K-beta”-alumina ceramic electrolyte are found to have relatively high critical currents for dendrite penetration on charge of approximately 4.8 mA/cm2, and voiding on discharge of approximately 2.0 mA/cm2, at 20 °C under 2.5 MPa stack-pressure. These values are higher than generally reported in the literature under comparable conditions for Li and Na metal anode solid-state batteries. The higher values for potassium are attributed to its lower yield strength and its readiness to creep under relatively low stack-pressures. The high critical currents of potassium anode solid-state batteries help to confirm the importance of the metal anode mechanical properties in the mechanisms of dendrite penetration and voiding.",

author = "{Spencer Jolly}, Dominic and Johann Perera and Pu, {Shengda D.} and Melvin, {Dominic L.R.} and Paul Adamson and Bruce, {Peter G.}",

note = "Funding Information: P.G.B. is indebted to the Faraday Institution All-Solid-State Batteries with Li and Na Anodes (FIRG007, FIRG008), the Engineering and Physical Sciences Research Council (EP/M009521/1) and The Henry Royce Institute for Advanced Materials for financial support (EP/R00661X/1, EP/S019367/1, EP/R010145/1). Publisher Copyright: {\textcopyright} 2022, The Author(s).",

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doi = "10.1007/s10008-022-05225-8",

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AU - Spencer Jolly, Dominic

AU - Perera, Johann

AU - Pu, Shengda D.

AU - Melvin, Dominic L.R.

AU - Adamson, Paul

AU - Bruce, Peter G.

N1 - Funding Information: P.G.B. is indebted to the Faraday Institution All-Solid-State Batteries with Li and Na Anodes (FIRG007, FIRG008), the Engineering and Physical Sciences Research Council (EP/M009521/1) and The Henry Royce Institute for Advanced Materials for financial support (EP/R00661X/1, EP/S019367/1, EP/R010145/1). Publisher Copyright: © 2022, The Author(s).

PY - 2022/9

Y1 - 2022/9

N2 - Potassium metal anode solid-state cells with a K-beta”-alumina ceramic electrolyte are found to have relatively high critical currents for dendrite penetration on charge of approximately 4.8 mA/cm2, and voiding on discharge of approximately 2.0 mA/cm2, at 20 °C under 2.5 MPa stack-pressure. These values are higher than generally reported in the literature under comparable conditions for Li and Na metal anode solid-state batteries. The higher values for potassium are attributed to its lower yield strength and its readiness to creep under relatively low stack-pressures. The high critical currents of potassium anode solid-state batteries help to confirm the importance of the metal anode mechanical properties in the mechanisms of dendrite penetration and voiding.

AB - Potassium metal anode solid-state cells with a K-beta”-alumina ceramic electrolyte are found to have relatively high critical currents for dendrite penetration on charge of approximately 4.8 mA/cm2, and voiding on discharge of approximately 2.0 mA/cm2, at 20 °C under 2.5 MPa stack-pressure. These values are higher than generally reported in the literature under comparable conditions for Li and Na metal anode solid-state batteries. The higher values for potassium are attributed to its lower yield strength and its readiness to creep under relatively low stack-pressures. The high critical currents of potassium anode solid-state batteries help to confirm the importance of the metal anode mechanical properties in the mechanisms of dendrite penetration and voiding.

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High critical currents for dendrite penetration and voiding in potassium metal anode solid-state batteries

Abstract

Bibliographical note

ASJC Scopus subject areas

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