Location
Innovation Lab Atrium
Start Date
4-3-2025 2:00 PM
End Date
4-3-2025 3:30 PM
Presentation Date
3 April 2025, 2:00pm - 3:30pm
Biography
Kiernan O'Boyle is a Ph.D. student in the Mechanical Engineering department, advised by Dr. Jonghyun Park. Their research focuses on advanced materials and manufacturing for energy storage and biomedical applications. Kiernan's work includes investigating extreme fast charging of lithium-ion batteries by controlling lithium plating, electrochemical exfoliation of hard carbon derived from soybeans, high-entropy solid-state electrolyte polymers, and the controllable wettability of nanofibers with zinc oxide nanoparticles for biomedical use. Through these projects, they aim to improve battery performance, enhance manufacturing techniques, and develop functional materials for both energy storage and healthcare applications.
Meeting Name
2025 - Miners Solving for Tomorrow Research Conference
Department(s)
Mechanical and Aerospace Engineering
Document Type
Poster
Document Version
Final Version
File Type
event
Language(s)
English
Rights
© 2025 The Authors, All rights reserved
Included in
Extreme fast charging algorithm for lithium-ion batteries with precision lithium plating regulation for degradation reduction
Innovation Lab Atrium
Comments
Advisor: Jonghyun Park
Abstract:
The inability to fast charge electrical vehicles (EVs) in a time analogous to refilling an internal combustion engine (ICE) vehicle remains a considerable obstacle. Despite successful innovations in battery materials and design, EV charging still lacks advanced algorithms. Fast charging causes serious degradation, including lithium plating and SEI layer growth. To mitigate degradation while concurrently achieving a fast charging time, the CQtCV algorithm was developed. The ‘CQt’ refers to the constant (C) of the capacity (Q) reduction rate (t) due to plating, regulating lithium plating below a critical threshold before switching to constant voltage (CV) to enable extreme fast charging with minimal degradation. Notably, CQtCV achieved an average charging time of 7.2 minutes to reach 80% capacity, representing an 85% reduction compared to CCCV while maintaining the same degradation rate. For the same charging time, CQtCV showed a 73.93% increase in nominal capacity over 100 cycles compared to CCCV.