Scientists have made a breakthrough in the development of lithium-ion batteries by creating an electrolyte with ultra-low lithium content, which could potentially reduce costs and improve environmental sustainability. The new Lidfob electrolyte, as reported in the journal Angewandte Chemie, offers an economical and stable alternative to traditional electrolyte components.
Traditional electrolytes used in lithium-ion batteries, which are commonly found in smartphones, electric cars, and power plants, have limitations. These batteries typically consist of lithium and cobalt oxide cathodes, graphite anodes, and liquid electrolytes that facilitate ion movement. The conventional electrolytes based on lithium hexafluorophosphate (LiPF6) have remained unchanged for over 30 years, despite advancements in enhancing battery characteristics. Their high cost and technological constraints have hindered widespread adoption.
The innovative electrolyte Lidfob, developed by researchers from the University of Ningbo in China and the University of Puerto Rico, presents a promising solution. With a mere 2% by weight content of Lidfob salt (0.16 mol/l), the electrolyte exhibits high ion conductivity at 4.6 mS/cm, enabling efficient battery function. Unlike LiPF6, Lidfob is resistant to moisture and air, eliminating the risk of toxic gas release upon contact with water.
These unique properties of Lidfob allow for the production of batteries in less stringent conditions, reducing manufacturing costs and simplifying processes, ultimately ensuring greater stability in battery usage.
The research was supported by the National Natural Science Foundation of China, the Natural Science Foundation of Zhejiang Province, the Ninbo 2025 Science and Technology Innovation Key Projects, and the NSF Center for Wearable Technology Promotion.
This pioneering advancement has the potential to transform the lithium-ion battery market, making batteries more cost-effective and environmentally sustainable. This development is especially significant in the global efforts to combat climate change and transition towards sustainable energy sources.