Xiao-Qing Yang and Kyung-Wan Nam, BNL The high energy density Li-rich layered materials xLiMO2·(1-x)Li2MnO3 are promising candidate cathode materials for electric energy storage in plug-in hybrid electric vehicles (PHEVs) or electric vehicles (EVs). The relatively low rate capability is one of the major problems need to be resolved for these materials. In order to gain […]
Dean Wheeler and Brian Mazzeo of Brigham Young University (Provo, UT) have developed a new surface probe that can accurately measure electronic conductivity of intact electrodes. Measuring conductivity of intact thin-film electrodes (still attached to current collector) is difficult, and prior methods have not been sufficiently accurate and robust. The new method uses four small […]
Kristin Persson, LBNL Li2MnO3 is a critical component in the family of the so-called ‘Li-excess’ materials, which are attracting attention as advanced cathode materials for Li-ion batteries. In this work, first-principles calculations are performed to investigate the electrochemical activity and structural stability of stoichiometric LixMnO3 (0 ≤ x ≤ 2) as a function of Li […]
Approaches toward Silicon-Based High-Capacity Anodes for Lithium-Ion Batteries The Kumta Lab is developing low-cost methods for producing nanoscale silicon composites as lithium-ion anodes. These heterostructures comprise nanocrystalline or amorphous Si and may contain a variety of carbon precursors. The Si provides high capacity while the graphitic and disordered carbon acts as an electrically-conductive matrix as […]
