Three-Dimensional Resistivity vs. Depth Profiling for Advanced Characterization of the Lithium-Ion Battery Solid Electrolyte Interphase

Caleb Stetson, Andrew Norman, Nathan Neale, Chun Sheng Jiang, Mowafak Al-Jassim, Steven DeCaluwe, Yanli Yin, Chunmei Ban

Research output: NRELPresentation

Abstract

In this work, we investigate the evolution of SEI formed from a standard electrolyte (1.2 M LiPF6 in EC:EMC (3:7 wt%)) through various points in cycling on several model Si surfaces. We also examine the solubility of SEI by resting the anode in the cell at varied temperatures then characterizing the residual SEI. Evolution of the SEI surface is also analyzed with atomic force microscopy (AFM) measurements. AFM and SSRM-derived results are presented in combination with chemical characterization, including time-of-flight secondary ion mass spectrometry (TOF-SIMS).
Original languageAmerican English
Number of pages20
StatePublished - 2019

Publication series

NamePresented at the 236th ECS Meeting, 13-17 October 2019, Atlanta, Georgia

NREL Publication Number

  • NREL/PR-5K00-75167

Keywords

  • anode materials
  • electrolyte
  • energy
  • graphite
  • grid storage
  • increased battery capacity
  • lithium-ion battery
  • silicon

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