Let’s take a deep dive into the world of lithium-ion batteries! These little powerhouses have transformed the energy storage landscape, fueling everything from smartphones to electric cars. However, like all great things, they face their own unique challenges ꟷ one of which being anode degradation. To understand and combat this problem, one analytical technique shines through ꟷ ion chromatography coupled with high resolution mass spectrometry (IC-MS/MS).
What are the implications of anode degradation?
Anode degradation is a complex process and can diminish the battery’s capacity and energy density, leading to reduced efficiency and battery life. It’s critical to understand and mitigate anode degradation for the creation of more durable, long-lasting lithium-ion batteries.
So, why is IC-MS/MS the chosen tool for anode degradation analysis?
IC-MS/MS brings together the unique separation selectivity for anionic compounds of ion chromatography (IC) and the precision, sensitivity, and selectivity of high-resolution mass spectrometry to qualify various ions and compounds in complex samples, such as those found in the electrolyte and the anode solidified electrolyte interface (SEI) in lithium-ion batteries.
Typically, the ions associated with degradation processes on the SEI consist of organic acids, sulphonates phosphates, fluorophosphates and fluoro-sulfonyl-imide structures. Combining the IC separation technique with a high-resolution accurate mass Thermo Scientific Orbitrap detector allows scientists to accurately separate and identify the chemical structures to further investigate the degradation processes on the SEI.
In studies conducted by Thermo Fisher Scientific, IC-MS/MS was used to perform a comprehensive analysis of degradation products in lithium-ion battery anodes (PN64526) and to specifically identify phosphorus-containing degradation products (PN71652). These studies demonstrate the high sensitivity of IC-MS/MS analysis, which allows for the detection of trace-level components. They also show the selectivity of IC-MS/MS to accurately distinguish co-eluting compounds and ensure confident structure characterization.
Battery manufacturers and researchers can leverage the IC-MS/MS platform for quality control (QA/QC) and performance evaluations of lithium-ion batteries. It’s also an excellent tool for developing strategies to counter anode degradation, which leads to improved performance and extended lifespan of lithium-ion batteries. As we venture further into the era of electric vehicles and renewable energy storage systems, these technological advancements will prove vital in our journey toward a sustainable future.
Where can I learn more?
Download the poster notes for more details on the IC-MS/MS method used to perform comprehensive analysis of anode samples:
- Comprehensive analysis of lithium-ion battery anode samples by IC-MS/MS (PN64526)
- Identification of phosphorus-containing degradation products obtained from surface deposits on lithium-ion battery anodes using IC-MS/MS (PN71652)
Visit our website for more information about ion chromatography for battery material testing.
On LinkedIn? Visit our LinkedIn page #LithiumIonBattery #IonChromatography