Breakthrough in Lithium Battery Research: Tsinghua University Develops Efficient Screening Strategy

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Scientists at Tsinghua University have made a significant discovery in the field of lithium battery research, developing a reactivity-guided screening strategy to identify electrolyte additives that promote robust, inorganic-rich electrode-electrolyte interphases. This breakthrough has the potential to enhance battery performance for high-voltage and high-temperature operational conditions. The research, supported by the Shenzhen Science and Technology Innovation Program, utilized density functional theory (DFT) to derive Fukui functions and identify the most effective electrolyte additives.

Key Takeaways:

  • The research team developed a reactivity-guided screening strategy based on DFT-derived Fukui functions to identify electrolyte additives that promote robust, inorganic-rich electrode-electrolyte interphases.
  • The strategy achieved high prediction accuracy, outperforming conventional HOMO-based screening, and demonstrated superior reliability in additive selection.
  • The researchers identified 4-(Trifluoromethyl)thiobenzamide (TFSBN) as a promising additive, which facilitated oxidation and the formation of a robust inorganic-rich electrode-electrolyte interphase.
  • The TFSBN-modified electrolyte (1TF) exhibited significantly enhanced battery performance for high-voltage (4.8 V) and high-temperature (55°C) operational conditions.
  • The cell with 1TF demonstrated exceptional fast-charging stability and pouch cell compatibility.
  • The research established a generalizable computational-experimental framework for electrolyte additive design, accelerating the development of high-energy-density batteries under extreme operational conditions.
  • The study involved a team of researchers from Tsinghua University, including Yidan Cao, Guohuang Kang, Yue Cao, Qi Liu, Jiachao Duan, Yuanyuan Zhang, and Feiyu Kang.

Statistics:

  • 4.8 V: target high-voltage operational condition
  • 55°C: target high-temperature operational condition
  • 1TF: TFSBN-modified electrolyte
  • 3830: page number of the research paper in Electronics Newsweekly
  • 2025: publication year of the research paper

Sources:

  • "Efficient Screening of Electrolyte Additives for High-temperature, High-voltage Lithium Batteries Via Fukui Functions" (Advanced Functional Materials, 2025)
  • Tsinghua University, Institute for Materials Research (pub.tsinghua.edu.cn)
  • Yidan Cao, Tsinghua Shenzhen Int Grad Sch, Shenzhen 518055, People's Republic of China
  • Guohuang Kang, Yue Cao, Qi Liu, Jiachao Duan, Yuanyuan Zhang, and Feiyu Kang (co-authors of the research paper)