DCN Seminar

Dr. B. Layla Mehdi , University of Liverpool

Quantitative Observation of Interface Dynamics in Next Generation Batteries

26.11.2019 (Tuesday) , 15:00 - 16:30
TU Dresden, Barkhausen Building, room BAR E64A , Helmholtzstraße 18 , 01069 Dresden

Dr. B. Layla Mehdi
Photo: private

Welcome to a new volume of the DCN seminar series offered by cfaed's technology platform Dresden Center for Nanoanalysis! It takes place on Tuesday, November 26. The next speaker is Dr. B. Layla Mehdi (Associate Professor, University of Liverpool). She will talk about "Quantitative Observation of Interface Dynamics in Next Generation Batteries".

Quantitative Observation of Interface Dynamics in Next Generation Batteries
B. L. Mehdi1,2, J. Lee1, H. Amari1, N. D. Browning1,2,3, A. Stevens3

1 Engineering & Physical Sciences, University of Liverpool, Liverpool L69 3GH, UK
2 Physical and Computational Science Directorate, PNNL, Richland, WA 99352, USA
3 Sivananthan Laboratories, Sensor Analytics, Bolingbrook, IL USA

Reactions at the two interfaces between the main components of a battery – anode/electrolyte and cathode/electrolyte – determine the overall energy density and coulombic efficiency of the entire system. In many of the newly developed battery nanomaterials and nonaqueous electrolytes, the biggest challenge is the transition from promising performance of the half-cell to a fully operating battery. There are many factors preventing the successful commercialization of these next generation battery systems, which are usually triggered by side reactions leading to electrolyte breakdown, passivation or corrosion and the formation of a solid-electrolyte-interphase (SEI) layer. In addition, deposition of an excess of metal ions during charging leads to dendrite formation during cycling. Each of these effects is directly linked to the local chemistry/field at the electrode/electrolyte interface and a full understanding of the materials parameters that can lead to improved battery performance can be achieved only if we can measure this directly.

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