Competition between PCBM aggregation and P3HT crystallization in thin films upon annealing

Abstract

Microsymposia C70 Hydrogen has been considered as a promising alternative fuel for transportation, provided we can find a way to store a large amount of it in a compact way [1]. The realization of such a storage system can be achieved by developing materials that can easily absorb, safely store, and rapidly release hydrogen and have durable reversibility. However, there is currently no material to meet all the requirements for on board storage. Great efforts have been made to understand hydrogenation properties of currently available hydrogen storage materials to look for a way to improve properties or to prepare new materials. However, investigating some of these materials is challenging since their hydrides are only stable under hydrogen gas pressure. We have investigated the structure of conventional hydrogen storage materials using insitu neutron experiments. In this talk, I will present our average and local structural studies on various hydrogen storage materials by using Rietveld and the atomic pair distribution function analysis [2] on neutron and synchrotron X-ray total scattering data. The systems of interest are mechanically alloyed MgCo, Ti-V-Mn binary and ternary alloys and (Mg, Pr)Ni 2 .