Energies (Apr 2023)

The Incremental Capacity Curves and Frequency Response Characteristic Evolution of Lithium Titanate Battery during Ultra-High-Rate Discharging Cycles

  • Chu Wang,
  • Yaohong Sun,
  • Yinghui Gao,
  • Ping Yan

DOI
https://doi.org/10.3390/en16083434
Journal volume & issue
Vol. 16, no. 8
p. 3434

Abstract

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The high-rate discharging performance of lithium titanate batteries is a crucial aspect of their functionality. Under high-power demands, the discharge rate, which is defined as the ratio of discharge current to the maximum capacity, can exceed 50 C or higher. This study investigates the evolution of incremental capacity (IC) curves and frequency response characteristic of 2 Ah lithium titanate batteries subjected to aging cycles at 50 C. The results provide a new indicator to assess the fading of the state of health (SOH) of lithium titanate batteries during ultra-high-rate discharge cycles.

Keywords