Electrochemical Mechanism and Structure Simulation of 2D Lithium-Ion Battery

Mingzhi Dai, Changhe Huo, Qiang Zhang, Karim Khan, Xingye Zhang, Cai Shen

Research output: Journal PublicationArticlepeer-review

9 Citations (Scopus)

Abstract

For decades, lithium batteries have attracted much attention. Highly efficient, safe, and convenient batteries are worthy of being investigated and applied in modern life. However, most of the investigation is on the macroscopic device electrical properties such as current–voltage curves. Investigation on the microscopic electrical properties including potential distribution, electrolyte salt concentration distribution, and lithium ion concentration distribution within the batteries during the discharging is still needed. Here, a detailed study of the key electrical properties distributions inside the lithium battery in the discharging status is given. After comparing three widely used cathode materials (LiCoO2, LiMn2O4, and LiFePO4), LiFePO4 is found to show the most stable working performance which is consistent with previous reports. This is probably attributed to its most uniform key electrical properties distributions, its high electric conductivity, and crystal structure. A structure is also proposed which might give a hint to stress and temperature release for a longer and safer application of batteries. This simulation study on the key parameters distribution inside the battery may help to achieve a better understanding and hence control on the lithium battery performance and reliability.

Original languageEnglish
Article number1800023
JournalAdvanced Theory and Simulations
Volume1
Issue number10
DOIs
Publication statusPublished - 1 Oct 2018
Externally publishedYes

Keywords

  • cathode material
  • conductivity
  • lithium-ion battery
  • simulation
  • structure

ASJC Scopus subject areas

  • Statistics and Probability
  • Numerical Analysis
  • Modelling and Simulation
  • General

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