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

Conference · Fri Oct 18 00:00:00 EDT 2019

OSTI ID:1571751

Stetson, Caleb ^[1]; Yin, Yanli ^[1]; Norman, Andrew  ^[1]; Neale, Nathan R  ^[1]; Jiang, Chun Sheng ^[1]; Ban, Chunmei ^[1]; DeCaluwe, Steven C. ^[1]; Al-Jassim, Mowafak M ^[1]

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1. National Renewable Energy Laboratory (NREL), Golden, CO (United States)

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).

• Research Organization: National Renewable Energy Lab. (NREL), Golden, CO (United States)
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
• DOE Contract Number: AC36-08GO28308
• OSTI ID: 1571751
• Report Number(s): NREL/PR-5K00-75167
• Resource Relation: Conference: Presented at the 236th ECS Meeting, 13-17 October 2019, Atlanta, Georgia
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
anode materials
lithium-ion battery
electrolyte
graphite
silicon
energy
grid storage
increased battery capacity