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Electrolyte Interfacial Reactions in Localized High Concentration Electrolytes for Various Energy Storage Chemistries


EMSL Project ID
51724

Abstract

Localized high-concentration electrolytes (LHCEs) developed at PNNL in 2017 for rechargeable lithium (Li) metal batteries show not only significant enhancement in protection of Li metal anode and performance of Li metal batteries with conventional intercalation cathode materials, but also great improvement in Li-ion batteries with graphite and silicon anodes as well as Li-oxygen batteries. Further characterize the electrolytes and the electrode/electrolyte interphase/interface can help us understand the origin of such battery performance improvement and the mechanism of electrode/electrolyte interfacial reactions from the LHCEs, and then guide us to develop more stable electrolytes for various battery chemistries. The characterizations include the use of spectroscopy and microscopy techniques, such as XPS, XRD, Raman, NMR, SEM, TEM, ToF-SIMS.

Project Details

Start Date
2020-10-13
End Date
2023-10-01
Status
Closed

Team

Principal Investigator

Mark Engelhard
Institution
Environmental Molecular Sciences Laboratory

Team Members

Nabajit Lahiri
Institution
Pacific Northwest National Laboratory

Xia Cao
Institution
Pacific Northwest National Laboratory

Eric Walter
Institution
Environmental Molecular Sciences Laboratory

Wu Xu
Institution
Pacific Northwest National Laboratory

Mark Bowden
Institution
Pacific Northwest National Laboratory

Guosheng Li
Institution
Pacific Northwest National Laboratory

Zihua Zhu
Institution
Environmental Molecular Sciences Laboratory

Chongmin Wang
Institution
Environmental Molecular Sciences Laboratory