Wednesday, 3 October 2018
Universal Ballroom (Expo Center)
V. A. Agubra, T. Moore, R. Kemp, and A. F. Intekhab (Arkansas Tech University)
The area of blended cathode materials is still evolving and there are very few research on the subject. The blending parent cathode materials typically involves high capacity electrode materials; layered oxides compounds with spinel cathode compounds that are lower in cost, more environmentally benign and higher operating voltage. These blended cathode materials are expected to be resilient in terms of storage capacity, cycle life, cheaper and environmentally safer. However, chemically, there are exist challenges in pairing a high- operating voltage material and high capacity material and still achieving less resistance, greater storage and cycle life may be difficult to achieve, since high voltages are likely to enable more degradation pathways.
This paper seeks to explore a composite systems made of three different cathode materials involving lithium rich compounds Li1.2Mn0.4Ni0.16Co0.24O2, the Li2MnO3-stabilized compounds, spinel, or Olivine fluorides (Li2MPO4F). This study aims to design a better ternary system that meets the high energy density demand for hybrid electric vehicles and at the same time, minimizes the salient but important material properties like the thermal stability, longer life, high capacity and yet meet bottom line. The paper therefore explores a thorough understanding of the various interaction of each of the compounds so as to tailor their properties to have that synergy, conducting basic scientific analysis of the particle-to particle interaction at the atomic level, as well as the chemical interaction of the constituents in the ternary system to achieve the synergistic effect.