ECS Detroit Section Presents “Electrolytes for High Voltage Lithium-Ion Batteries”

The ECS Detroit Section invites you to join Dr. Chen Liao for her webinar on Wednesday, April 6, 2022.

Date: Wednesday, April 6, 2022
Time: 1900h EDT
Cost: Free


Chen Liao
Chemical Sciences and Engineering
Argonne National Laboratory

Webinar is open to the public

Format: Zoom
Register to obtain the Zoom Link

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We have shown different strategies of high voltage electrolyte design to improve capacity retention and reduce impedance rise, i.e., in situ electrolyte additives to synthesize the beneficial lithium tetrafluorophosphate components dual-salt electrolytes for reducing cathodic impedance, or addition of H2O and HF getters. A range of lithium ion battery cathodes are tested in these works, including NMC532, NMC811, and high Nickel cathode (LiNixMnyCozO2, where x >= 0.9). Using an established FOM (Figure of Merit) approach, the performance of additives can be reliably compared using a standard protocol. The goal is to achieve ultimately the highest energy and power density. Multifaceted posttest analytical methods are used to understand the failure mechanism of the baseline cells and how additives/solvents approaches help the performance. For example, the improved electrolytes prevent the transesterification reactions on anode surface, form a stable cathode interface, and mitigate structural damage on the cathode surface.

Chen Liao

Dr. Chen Liao is a physical organic chemist and staff scientist at the Argonne National Laboratory. Dr Liao joined Argonne in 2013, following postdoctoral positions at the University of Florida and Oak Ridge National Laboratory. Her research focuses on materials development, diagnosis, and characterization methods for energy storage systems. She has over 80 publications and more than 10 US issued patents. She is serving as a subthrust leader for Joint Center of Energy Storage Research with a multi-institutional team consisting of University of Illinois Urbana-Champaign, Lawrence Berkeley National Laboratory, and Sandia National Laboratories. She also won two Prime Argonne Laboratory Directed Research and Development Awards as the lead PI (2018-2020, 2021-2023).

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