Skip to main content
main-content
Top

Hint

Swipe to navigate through the articles of this issue

06-02-2020 | Issue 6/2020

Fire Technology 6/2020

Dynamic Heat Generation of LiNi0.5Co0.2Mn0.3O2 Half Cell Under Cycling Based on an In Situ Micro-calorimetry

Journal:
Fire Technology > Issue 6/2020
Authors:
Chen Liang, Lihua Jiang, Qingsong Wang, Jinhua Sun
Important notes

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Abstract

To further understand the thermal properties of lithium ion batteries, in situ measurement and calculation of the heat generation under operating condition are conducted. In this work, a novel micro-calorimeter with high accuracy is applied to study the heat flow of the LiNi0.5Co0.2Mn0.3O2/Li half cell. The dynamic heat generation and corresponding electrochemical data are detected out under isothermal environment from 30°C to 70°C with different current rates (0.2, 0.4, 0.6, 0.8 and 1.0 C) and electrode thicknesses (400, 200 and 100 μm). In addition, heat generation rate is calculated based on the measurement of entropy coefficient and internal resistance. It is found that the heat generation rises with the increase of thickness and current rate, due to concentration polarization and electrochemical polarization, respectively. The lithiation process is more sensitive to changes in current rate than delithiation. Appropriately increasing the temperature can improve the activity of material and reduce the energy consumption of the battery. Besides, the contribution of reversible heat to the overall heat generation should be taken into account especially at a lower current rate (< 0.5 C). The detailed analysis of heat generation and electrochemical performance can provide accurate data for thermal management systems.

Please log in to get access to this content

To get access to this content you need the following product:

Springer Professional "Technik"

Online-Abonnement

Mit Springer Professional "Technik" erhalten Sie Zugriff auf:

  • über 50.000 Bücher
  • über 380 Zeitschriften

aus folgenden Fachgebieten:

  • Automobil + Motoren
  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Elektrotechnik + Elektronik
  • Energie + Umwelt
  • Maschinenbau + Werkstoffe




Testen Sie jetzt 30 Tage kostenlos.

Springer Professional "Wirtschaft+Technik"

Online-Abonnement

Mit Springer Professional "Wirtschaft+Technik" erhalten Sie Zugriff auf:

  • über 69.000 Bücher
  • über 500 Zeitschriften

aus folgenden Fachgebieten:

  • Automobil + Motoren
  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Elektrotechnik + Elektronik
  • Energie + Umwelt
  • Finance + Banking
  • Management + Führung
  • Marketing + Vertrieb
  • Maschinenbau + Werkstoffe
  • Versicherung + Risiko

Testen Sie jetzt 30 Tage kostenlos.

Literature
About this article

Other articles of this Issue 6/2020

Fire Technology 6/2020 Go to the issue