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Williams Agyei Appiah

Associate Professor

Battery Modelling and Simulation

Williams Agyei Appiah has experience in battery modeling and simulation research from DGIST, South Korea (PhD) and Technical University of Denmark (Postdoc). His research activities focus on merging fundamental science and engineering applications of electrochemical devices such as lithium ion and next-generation batteries with work including continuum physics-based modeling, understanding (dis) charging mechanisms, elucidating degradation mechanisms, innovative electrode/cell design optimization, data mining tools and fast predictive models for inverse design.

At the University of Agder, he combines his research and teaching experience to educate and inspire the next generation in battery technology, conducts battery research and design modeling tools to accelerate battery development at the Battery Coast. 

Forskning

Lithium-Ion Batteries, Electrode-level Modelling and Simulation of Batteries, Parameterization of Electrochemical Models, Thermal Modelling of Batteries, Development of Fast Predictive Battery Models, Battery Data Mining and Analysis, Modelling of Battery Ageing Mechanisms

Arbeidserfaring

09/2022 - 02/2024: Postdoctoral Researcher
                                Autonomous Materials Discovery Section
                                Department of Energy Conversion and Storage, DTU, Denmark

09/2020 - 09/2022:  Postdoctoral Researcher
                                 Atomic Scale Materials Modelling 
                                 Department of Energy Conversion and Storage, DTU, Denmark

02/2017 - 08/2020:  Ph.D. Energy Science and Engineering
                                 DGIST, Daegu, South Korea

08/2015 - 02/2017:  Research Assistant
                                 Energy United Laboratory
                                 Department of Chemical and Biotechnology
                                 HBNU, Daejeon, South Korea

08/2013 - 08/2015:  M. Eng. Applied Chemistry
                                 HBNU, Daejeon, South Korea

08/2012 - 08/2013:   Teaching Assistant
                                  Department of Chemical Engineering, KNUST, Kumasi, Ghana

08/2008 - 08/2012:    B. Sc. Chemical Engineering
                                  KNUST, Kumasi, Ghana
 

Utvalgte publikasjoner

  1. W. A. Appiah, J. Park, S. Song, S. W. Byun, M.-H. Ryou and Y. M. Lee, Design Optimization of LiNi0.6Co0.2Mn0.2O2/graphite Li-ion cells Based on Simulation and Experimental Data, Journal of Power Sources, 319 (2016) 147-158.
  2. W. A. Appiah, J. Park, L. V. Khue, Y. Lee, J. Choi, M.-H. Ryou and Y. M. Lee. Comparative study on experiments and simulation of blended cathode active materials for Li ion batteries, Electrochemica Acta, 187 (2016) 422-432.

  3. W. A. Appiah, J. Park, S. Byun, I. Cho, A. Mozer, M.-H. Ryou and Y. M. Lee. A coupled chemo-mechanical model to study the effects of adhesive strength on the electrochemical performance of silicon electrodes for advanced Li ion batteries, Journal of Power Sources, 407 (2018) 153-161.

  4. W.A. Appiah, M.-H. Ryou and Y. M. Lee. A Physics-Based Model Capacity Fade Analysis of LiMn2O4/Graphite Cell at Different Temperatures, Journal of the Electrochemical Society, (2019) 166(3) A5109-A5116.

  5. W. A. Appiah, D. Kim, J. Song, M.-H. Ryou and Y. M. Lee. Understanding the Effect of Polydopamine Interlayer on the Long-term Cycling Performance of Silicon Anodes: A Multiphysics-Based Model Study, Batteries & Supercaps, 2 (2019) 541-55. (Selected as a Very Important Paper and Cover Image)

  6. W. A. Appiah, Y. Roh, C. B. Dzakpasu, M.-H. Ryou and Y. M. Lee. Design of thin-film interlayer between silicon electrode and current collector using a chem-mechanical degradation model, Journal of the electrochemical society, 167 (2020) 080542

  7. W. A. Appiah, H. Li, J. Lampkin, and JM. Garcia-Lastra. Towards understanding aluminum sulfur batteries with imidazolium-based electrolytes: A phenomenological model, Journal of Power Sources, 529 (2022) 231254

  8. W. A. Appiah, J. Busk, T. Vegge, and A. Bhowmik. Sensitivity analysis methodology for battery degradation models, Electrochimica Acta, 439 (2023) 141430

  9. W. A. Appiah, L. H. Rieger, E. Flores. Vegge, and A. Bhowmik. Unravelling degradation mechanisms and overpotential sources in aged and non-aged batteries: A non-invasive diagnosis, Journal of Energy Storage, 84 (2024) 111000

Vitenskapelige publikasjoner

  • Appiah, Williams Agyei; Kim, Dohwan; Lee, Yong Min; Garcia-Lastra, Juan Maria; Castelli, Ivano E. (2024). Continuum insight into the effects of electrode design parameters on the electrochemical performance of lithium-ion batteries. Electrochimica Acta. ISSN: 0013-4686. 494s 1 - 9. doi:10.1016/j.electacta.2024.144470.
  • Appiah, Williams Agyei; Rieger, Laura Hannemose; Flores Cedeño, Eibar; Vegge, Tejs; Bhowmik, Arghya (2024). Unravelling degradation mechanisms and overpotential sources in aged and non-aged batteries: A non-invasive diagnosis. Journal of Energy Storage. ISSN: 2352-152X. 84doi:10.1016/j.est.2024.111000.

Sist endret: 28.02.2024 09:02