Lea de Biasi

TL;DR: It is found that the stabilization effect of entropy brings significant benefits for the storage capacity retention of high entropy oxides and greatly improves the cycling stability, and the electrochemical behavior of the high entropy Oxides depends on each of the metal cations present, thus providing the opportunity to tailor the Electrochemical properties by simply changing the elemental composition.

TL;DR: In this paper, the volume changes occurring in state-of-the-art electrode materials, based on crystallographic studies, are analyzed and compared, and the reaction volumes of operating full cells (charge/discharge volumes) are determined from pressure-dependent open-circuit voltage measurements.

TL;DR: The characteristic process of formation and mechanisms of fatigue are fundamentally characterized and the effect of chemical composition on cell chemistry, electrochemistry, and cycling stability is addressed on different length scales by use of state-of-the-art analytical techniques, ranging from "standard" characterization tools to combinations of advanced in situ and operando methods.

TL;DR: In this paper, the volume expansion of graphite under cycling conditions is investigated. But, to the best of our knowledge, there exists no comprehensive set of structural data as a function of lithium content.

TL;DR: In this paper, the authors investigated changes in crystal and electronic structure of NCM811 (80% Ni) cathode materials at high states of charge by a combination of operando X-ray diffraction (XRD), operando hard Xray absorption spectroscopy (hXAS), ex situ soft x-ray absorption spectrum analyzer (sXAS) and density functional theory (DFT) calculations and correlate the results with data from galvanostatic cycling in coin cells.