Electrochemical impedance analysis of 18650 lithium-ion and 6HR61 nickel-metal hydride rechargeable batteries

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Moralı U., Erol S.

JOURNAL OF THE FACULTY OF ENGINEERING AND ARCHITECTURE OF GAZI UNIVERSITY, cilt.35, sa.1, ss.297-309, 2020 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 35 Sayı: 1
  • Basım Tarihi: 2020
  • Doi Numarası: 10.17341/gazimmfd.463280
  • Dergi Adı: JOURNAL OF THE FACULTY OF ENGINEERING AND ARCHITECTURE OF GAZI UNIVERSITY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED)
  • Sayfa Sayıları: ss.297-309
  • Anahtar Kelimeler: Impedance spectroscopy, rechargeable battery, equivalent circuit, battery performance, porous electrode, OPTIMIZATION, PERFORMANCE, DISCHARGE, BEHAVIOR
  • Eskişehir Osmangazi Üniversitesi Adresli: Evet

Özet

In this study, electrochemical impedance analysis at the same cell potential, constant temperature, and frequency range was performed for commercial 18650 lithium-ion and 6HR61 nickel-metal hydride batteries which are commonly used among secondary batteries. The significant physical parameters for batteries were determined by the impedance responses and the developed equivalent circuit model of these two rechargeable batteries. The obtained parameters were compared in terms of the performance and capacity characteristics that significantly determine the preference of batteries in energy storage systems. As a result, the lithium-ion battery has a number of superior properties over the nickel-metal hydride battery. In addition, the model developed with the electrochemical impedance spectroscopy technique has been shown to be effective and has a great potential for meeting the energy needs and design of future batteries.