Speciation Analysis of Manganese Dissolution in
Li-Ion Batteries

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  • Date: Oct 23, 2014 - 15:00 - 16:00 (local time)
  • Presenter: Paul Voelker & Daniel KutscherThermo
  • Categories: Atomic
thumbnail image: Speciation Analysis of Manganese Dissolution in<br/>Li-Ion Batteries

Speciation Analysis of Manganese Dissolution in Li-Ion Batteries

Broadcast on October 23, 2014

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Lightweight rechargeable lithium-ion batteries (LIBs) are key components for portable electronics, medical devices, industrial equipment, and automobiles. They provide high energy density and recharge without memory effects. Much research has been spent on improving product safety, cycle life, and product performance, yet understanding fundamental processes and degradation mechanism in LIBs remains a challenge. Identifying breakdown products and understanding degradation processes can lead to enhancing battery performance, improvements in product safety, and insight into component failure mechanisms.

Manganese-based LIBs are environmentally friendly, have a good safety record, and can be produced at a lower cost than other metal-based LIBs; however, they have a shorter lifetime. One reported cause of lifetime loss is the dissolution of manganese from the cathode into the electrolyte during cycling (i.e., charging/discharging).

This presentation will discuss the analysis of cycled anode material and the separation of different degradation products. Identification of manganese dissolution products deposited on the anode surface of an aged manganese-based LIB was accomplished using different chromatographic conditions. Results show that under alkaline (anionic) conditions, manganese-containing products are retained by the column, suggesting the presence of an ionic complex. Further investigation shows the deposited ionic manganese complex includes permanganate and manganate. Under acidic (cationic) conditions, the ionic manganese products are shown to convert to Mn2+. Results are determined by ion chromatography (IC) and IC with inductively coupled plasma-mass spectrometry (IC-ICP-MS).

Key learning objectives

  • How to choose the appropriate analytical instrument to analyze and identify ionic manganese and other transition metal complexes.
  • How to choose the best analytical column to optimize the resolution of anionic and cationic complexes.

Who should attend?

  • Researchers and producers of lithium-ion batteries involved in the areas of R&D, formulation, and compositional analysis
  • Researchers and producers of lithium-ion batteries interested in improving the performance and longevity of lithium ion batteries

Your Presenters

Paul Voelker

Paul Voelker

Vertical Marketing Manager
Environmental & Industrial Markets
Chromatography & Mass Spectrometry Division
Thermo Fisher Scientific

Paul Voelker: Biography

Paul develops environmental and industrial markets for Thermo Fisher Scientific’s chromatography and mass spectrometry products. He has over 25 years marketing management and lab application experience in life science, pharmaceutical/biopharmaceutical, and industrial markets. Paul holds a BS in Chemistry from California State University at Hayward and an MS in Chemistry from University of California Davis, where he specialized in synthetic organic chemistry.

Daniel Kutscher

Daniel Kutscher

Application Specialist
Thermo Fisher Scientific

Daniel Kutscher: Biography

After graduation in Chemistry in 2007, Daniel obtained a PhD in Analytical Chemistry from the University of Oviedo in Spain. His primary research interest is exploring new technologies based on elemental mass spectrometry for the accurate quantification of proteins and peptides. Daniel joined Thermo Fisher Scientific in late 2011 as an ICP-MS product specialist. His work there has focused on hyphenated techniques such as IC-ICP-MS as well as the characterization of nanoparticles using ICP-MS-based techniques.

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In association with:
                                 Pittcon 2015                             Current Protocols

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