Anode characterization in zinc-manganese dioxide AA alkaline batteries using electrochemical-acoustic time-of-flight analysis

S. Bhadra, G. Hsieh, M. J. Wang, B. J. Hertzberg, Daniel Artemus Steingart

Research output: Contribution to journalArticle

12 Scopus citations

Abstract

Using an ultrasonic flaw detector, electrochemical-acoustic time of flight (EAToF) experiments are performed on commercially available alkaline Zn/MnO2 LR6 (AA) batteries during discharge. The EAToF data are compared to in situ energy-dispersive X-ray diffraction (EDXRD) data and scanning electron microscope (SEM) images taken post mortem. Changes in the acoustic waveforms from EAToF measurements are shown to correlate with dehydration of the Zn gel anode and formation of ZnO, as shown by peak evolution in the EDXRD data and morphology analysis using SEM. We show that the physical transitions during discharge change the transmission of an ultrasonic pulse, and that ultrasonic time-of-flight analysis can be used to determine differences between brands of alkaline AA cells.

Original languageEnglish (US)
Pages (from-to)A1050-A1056
JournalJournal of the Electrochemical Society
Volume163
Issue number6
DOIs
StatePublished - Jan 1 2016

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

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