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3D electrochemical model for a Single Secondary Particle and its application for operando analysis

Title
3D electrochemical model for a Single Secondary Particle and its application for operando analysis
Authors
Song, JihunPark, JoonamAppiah, Williams AgyeiKim, Sung-SooMunakata, HirokazuKanamura, KiyoshiRyou, Myung-HyunLee, Yong Min
DGIST Authors
Lee, Yong Min
Issue Date
2019-08
Citation
Nano Energy, 62, 810-817
Type
Article
Article Type
Article
Author Keywords
Single secondary particleDesign parametersElectrochemical modelSecondary particle optimizationOperando analysisLithium-ion batteries
Keywords
CYCLE LIFE MODELION BATTERYBINDER-FREELITHIUMPERFORMANCEELECTRODEANODENANOPARTICLESCAPABILITYDISCHARGE
ISSN
2211-2855
Abstract
We developed a 3D electrochemical model for simulating the electrochemical properties and revealing the internal properties of a single LiFePO4 secondary particle during cycling. The main model parameters, such as the diffusion coefficient and rate constant, were optimized using rate capability data, which have been measured experimentally with a unique single particle measurement technique. We simulated voltage profiles at different c-rates from 2 to 20C, which were approximately equivalent to the experimental voltage profiles. The model estimated real-time overpotential, lithium ion concentration, and state-of-charge within the single particle, which have not been obtained experimentally, while changing design parameters and operating conditions. We validated the reliability and applicability of the model by comparing and analyzing the electrochemical results of various LiFePO4 secondary particles with variable design parameters (i.e., solid volume fraction, secondary particle size, and primary particle size). © 2019 Elsevier Ltd
URI
http://hdl.handle.net/20.500.11750/10075
DOI
10.1016/j.nanoen.2019.05.087
Publisher
Elsevier BV
Related Researcher
Files:
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Collection:
Department of Energy Science and EngineeringBattery Materials & Systems LAB1. Journal Articles


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