Researchers at the University of California, Riverside’s Bourns College of Engineering have redesigned the component materials of the battery found in electric vehicles in an environmentally friendly way. The goal was to solve several problems with the technology including they take a long time to charge; the charge doesn’t hold long enough to drive long distances; they don’t allow drivers to quickly accelerate; and they are big and bulky.
By creating nanoparticles with a controlled shape, the research team believes smaller, more powerful and energy efficient batteries can be built. By modifying the size and shape of battery components, they aim to reduce charge times as well.
“This is a critical, fundamental step in improving the efficiency of these batteries,” said David Kisailus, an associate professor of chemical and environmental engineering and lead researcher on the project. In addition to electric cars, the redesigned batteries could be used for municipal energy storage, including energy generated by the sun and wind.
The initial findings are outlined in a recently published paper called “Solvothermal Synthesis, Development and Performance of LiFePO4 Nanostructures” in the journal Crystal Growth & Design. Kisailus, who is also the Winston Chung Endowed Professor in Energy Innovation, and Jianxin Zhu, a Ph.D. student working with Kisailus, were the lead authors of the paper.
The researchers in Kisailus’ Biomimetics and Nanostructured Materials Lab set out to improve the efficiency of Lithium-ion batteries by targeting one of the material components of the battery, the cathode. Lithium iron phosphate (LiFePO4), one type of cathode, has been used in electric vehicles because of its low cost, low toxicity and thermal and chemical stability. However, its commercial potential is limited because it has poor electronic conductivity and lithium ions are not very mobile within it. Continue reading