Yiqun Liu

Jul 10, 2023 | nature.com | Bingbing Yang |Houbing Huang |Hao Pan |Wenxuan Zhu |Bin Wei |Yiqun Liu | +3 more

AbstractRelaxor ferroelectrics are the primary candidates for high-performance energy storage dielectric capacitors. A common approach to tuning the relaxor properties is to regulate the local compositional inhomogeneity, but there is a lack of a quantitative evaluation way for compositional fluctuation in relaxors. Here we propose configurational entropy as an index for the quantitative evaluation of local compositional inhomogeneity.

Jun 1, 2023 | tinyurl.com | Yiqun Liu

1. IntroductionLithium-ion battery is currently the major type of electrical energy storage device of electrified vehicles because of its high energy density and power density [1] [2] . However, the performance of lithium-ion battery, including discharging power and usable capacity, changes under different operating temperatures and through battery life. The discharging power and usable capacity of the battery decrease with battery operating temperature.