Chem. J. Chinese Universities ›› 2024, Vol. 45 ›› Issue (7): 20240222.doi: 10.7503/cjcu20240222

• Physical Chemistry • Previous Articles    

Research on Recycled Titanium Matrix Derived from Titanium-based Lead-acid Batteries as Titanium-based Grid Current Collector

LIU Debo, WU Yupeng, XU Keda, LIN Haibo()   

  1. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry,College of Chemistry,Jilin University,Changchun 130012,China
  • Received:2024-05-05 Online:2024-07-10 Published:2024-05-17
  • Contact: LIN Haibo E-mail:lhb910@jlu.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(22279042)

Abstract:

The energy density of titanium-based lead-acid batteries can be remarkably enhanced, thereby greatly resolving the problem of the easy corrosion and softening of the positive plates that are typically observed in traditional lead-acid batteries. This also demonstrates significant commercialization potential. However, when compared with the mature recycling process of traditional lead-acid batteries and the utilization of recycled lead, the recycling method of titanium-based lead-acid batteries and the application of recycled materials become the key factors for the future application and development of these batteries. In this paper, recycled titanium-based positive and negative electrode grids derived from titanium-based lead-acid batteries were prepared. The positive electrode grid was composed of recycled titanium matrix/tin-antimony intermediate layer/lead, and the negative electrode grid was composed of recycled titanium matrix/copper/lead. The possibility of recycling applications was discussed by studying the electrochemical properties of recycled titanium matrix derived from titanium-based lead-acid batteries for grid current collectors. The results show that the discharge specific capacity of the active material based on the recycled titanium-based positive plate is 72.4 mA·h/g, and the cycle life of the corresponding battery at 0.5C100%DoD(depth of discharge) is 180 times. The discharge specific capacity of the active material based on the recycled titanium-based negative plate is 98 mA·h/g, and the corresponding battery has a cycle life of 332 times at 0.5C100%DoD. The performance of the grid and battery prepared with the recycled titanium matrix is the same as that of the pure titanium matrix. This finding provides a solid experimental basis for the recycling of the recycled titanium grid in titanium-based lead-acid batteries.

Key words: Lead-acid battery, Recycled titanium matrix, Grid, Recycling, Cycle life

CLC Number: 

TrendMD: