Menu

Blog

Sep 04

Application Note: Graphite against Lithium – A poor Battery

In our last application note we took a closer look at the cathode "half-cell" of the lithium-ion battery, which in our case was NCM against lithium metal. It turned out, that the lithium metal electrode is under some conditions the bottleneck of charge transfer, especially at the vertex points of... read more →
  • 4. September 2020
Jun 04

Application Note: NCM against Lithium – Too much Lithium?

New cathode and anode materials for lithium ion batteries (LiB) are often tested for their electrochemical performance using lithium metal as the counter electrode. In laboratory language, these configurations are sometimes called “half-cells”. In most cases no reference electrode is used for such half-cells because the electrode potential of the... read more →
  • 4. June 2020
May 04

Application Note: Nothing but Lithium

This application note is supposed to be the first in a series dealing with the electrochemical testing of materials for lithium-ion batteries (LiB) using the PAT system from EL-CELL. More precisely, we will show you the advantages of the PAT-Cell (compared to other test cells like button, Swagelok and pouch... read more →
  • 4. May 2020
Feb 24
Mar 05
PAT-Tester-i-16

AC or DC? We can both!

Very often, Li-ion test cells are characterized in two separate experiments: first, constant current charge/discharge cycles are applied in order to learn about the direct current (dc) behavior of the battery, and, second, impedance tests are performed in order to learn about the alternating current (ac) behavior at different states... read more →
  • 5. March 2019
Dec 18

Li metal or Li ion – This is the question

   The anode material in almost all of today’s secondary lithium-ion batteries is graphite. In order to boost the energy density, we would love to replace the graphite by lithium metal. Many people work on this goal. Unfortunately, the lithium metal anode tends to form dendrites during electrochemical plating,... read more →
  • 18. December 2017
Oct 12

Lithium metal dendrites: Pictures speak louder than words

In a previous application note named “1001 reasons for using a reference electrode” we tried to convince you of the advantages of three-electrode cells with reference electrode over so-called half cells with lithium metal counter electrode. We claimed: “The large overvoltage at the lithium metal CE, the chemical reactivity of... read more →
  • 12. October 2017
Jul 10

New separator for PAT insulation sleeves

The FS-5P is a double-layered separator comprising a 180 µm-thick nonwoven PP cloth (Freudenberg FS 2226 E) and a 38 µm-thick microporous UHMW-PE membrane (Lydall Solupor 5P09B). We offer PAT insulation sleeves with this FS-5P separator, either with or without a lithium reference. When installed in the PAT insulation sleeve,... read more →
  • 10. July 2017
Jul 07
Jun 02

1001 reasons for using a reference electrode

There are many good reasons for using a reference electrode. In this note, we report a few of them using the example of a lithium-ion battery comprising a lithium cobalt oxide (LCO) cathode and a graphite anode. All measurements were performed with a PAT-Cell, docked into a PAT-Stand-16 (both EL-Cell).... read more →
  • 2. June 2017
GDPR Cookie Consent with Real Cookie Banner