Investigations on Electrode/Electrolyte Interfacial Reactions in Localized High-Concentration Electrolytes for Various Energy Storage Chemistries
EMSL Project ID
51161
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
2019-10-10
End Date
2021-09-30
Status
Closed
Released Data Link
Team
Principal Investigator
Team Members
Related Publications
Kwak W., H. Lim, P. Gao, R. Feng, S. Chae, L. Zhong, and J. Read, et al. 2020. "Effects of Fluorinated Diluents in Localized High-Concentration Electrolytes for Lithium-Oxygen Batteries." Advanced Functional Materials. PNNL-SA-152153. doi:10.1002/adfm.202002927
Kwak W., S. Chae, R. Feng, P. Gao, J. Read, M.H. Engelhard, and L. Zhong, et al. 2020. "Optimized Electrolyte with High Electrochemical Stability and Oxygen Solubility for Lithium-Oxygen and Lithium-Air Batteries." ACS Energy Letters 5, no. 7:2182-2190. PNNL-SA-150369. doi:10.1021/acsenergylett.0c00809
Zhang X., L. Zou, Y. Xu, X. Cao, M.H. Engelhard, B.E. Matthews, and L. Zhong, et al. 2020. "Advanced electrolytes for fast-charging high-voltage lithium-ion batteries in wide-temperature range." Advanced Energy Materials 10, no. 22:2000368. PNNL-SA-150274. doi:10.1002/aenm.202000368