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Nanotechnology

Breakthrough in Lithium-Sulfur Battery Research

Strategic Insights

— 2 min read

A team of researchers from Shandong University, led by Liqiang Xu, has made a significant discovery in the development of high-energy-density lithium-sulfur (Li-S) batteries. By implanting NiCoP nanoparticles into a porous carbon derived from petroleum coke, the team created a sulfur-host material with improved catalysis and adsorption capabilities. This breakthrough has the potential to propel the development of Li-S batteries for more efficient and sustainable energy storage.

Key Takeaways:

  • The research team developed a sulfur-host material by implanting NiCoP nanoparticles into a porous carbon derived from petroleum coke, which has a high specific surface area and abundant adsorption sites for capturing lithium polysulfides (LiPSs).
  • The introduction of NiCoP nanoparticles improved the polarity and boosted the LiPSs conversion kinetics of the sulfur-host material.
  • The Li-S cells fabricated with the new sulfur-host material deliver high discharge capacities of 1,462.7 mAh.g(-1) at 0.1 C and exhibit ultralong lifespans over 800 cycles at current densities of 1, 2, and 5 C.
  • The sulfur-host material also showed outstanding discharge capacities of 932.5 and 826.4 mAh.g(-1) at 0.5 and 1 C with a high sulfur loading of over 3.90 mg.cm(-2), and remained stable for about 60 cycles.
  • The research offers a new light for tackling the obstacles of porous carbon-based sulfur-host materials and propelling the development of Li-S batteries with high performance.

Statistics:

  • The Li-S cells fabricated with the new sulfur-host material delivered a high discharge capacity of 1,462.7 mAh.g(-1) at 0.1 C.
  • The cells exhibited an ultralong lifespan over 800 cycles at current densities of 1, 2, and 5 C.
  • The sulfur-host material showed outstanding discharge capacities of 932.5 and 826.4 mAh.g(-1) at 0.5 and 1 C with a high sulfur loading of over 3.90 mg.cm(-2).
  • The material remained stable for about 60 cycles.

Sources:

  • "Petroleum Coke Derived Porous Carbon/nicop With Efficient Reviving Catalytic and Adsorptive Activity As Sulfur Host for High Performance Lithium-sulfur Batteries." Nano Research, 2022.
  • Tsinghua Univ Press, B605D, Xue Yan Building, Beijing, 100084, Peoples R China (contact information for Nano Research).
  • Shandong University, School of Chemistry and Chemical Engineering, Key Laboratory of Colloid and Interface Chemistry, State Key Laboratory of Crystal Materials, Ministry of Education, Jinan 250100, People's Republic of China (contact information for Liqiang Xu).
  • National Natural Science Foundation of China (NSFC), Academy of Sciences Large Apparatus United Fund of China, Natural Science Foundation of Shandong Province (funders of the research).
  • NewsRx LLC (publisher of the news report).

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