DataVXACS Energy LettersPaper
journal article·2023-02-10Open access

Electrochemical Characterization of Degradation Modes of High-Voltage LixNi0.33Mn0.33Co0.33O2 Electrodes

Zeyu Hui, Karthik S. Mayilvahanan, Arun Kingan, David C. Bock, Xiao Tong, Alan Gen Li, Tianwei Jin, Matthias Preindl, Yuan Yang, Kenneth J. Takeuchi, Amy C. Marschilok, Esther Takeuchi, Alan C. West

ACS Energy Letters· Volume 8· Issue 2
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Source abstract

Abstract

While deeply charged high-voltage cathodes can improve battery energy density, understanding and preventing any accelerated cell degradation is crucial to practical success. To analyze the degradation of LiNi x Mn y Co 1– x – y O 2 (NMC) type material charged to 4.3 and 4.5 V, a physics-based model is applied to cycling data to obtain parameter estimates indicative of degradation modes, which are validated by simple electrochemical measurements and further interpreted by materials characterization. Growth rates of interfacial impedance and active material loss are greater at 4.5 V, as might be expected. However, when charged to 4.5 V, degradation rates are initially lower at a cycling C-rate of 1.0 C than at 0.5 C. Once degradation mode changes are quantified, simulations evaluate the contribution of individual degradation mode to performance losses and provide estimates of the energy-power correlation (Ragone plots) of cells after cycling.
Source: openalex_inverted_index · Quality: baseline

Research context

Energy storage

OpenAlex topics: Advancements in Battery Materials · Advanced Battery Technologies Research · Advanced Battery Materials and Technologies

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Chemical Engineering, Columbia University, New York, New York10027, United States

Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York10027, United States

Institute for Electrochemically Stored Energy, Stony Brook University, Stony Brook, New York11794, United States

Department of Chemistry, Stony Brook University, Stony Brook, New York11794, United States

Interdisciplinary Science Department, Brookhaven National Laboratory, Upton, New York11973, United States

Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York11973, United States

Department of Electrical Engineering, Columbia University, New York, New York10027, United States

Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, New York11794, United States

Department of Earth and Environmental Engineering, Columbia University, New York, New York10027, United States

Funding

U.S. Department of Energy · Stony Brook University

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