Welcome to the FP7 Marie Curie Initial Training Network - MATCONThere is a consensus today that supplying a growing world population with energy is one of the biggest – if not the biggest – challenge mankind is facing in the 21st century. The reasons for this are numerous and are among others related to the observation that energy is critical to human development, including economic growth, equity and employment, and that fossil fuels – our current energy backbone – are slowly but inevitably declining. This generates an increasing demand of well-educated young scientists knowledgeable in materials science for energy conversion and storage, because a central problem for all forms of energy is their efficient generation or conversion as well as energy storage with sufficiently high density (e.g., hydrogen or bio fuels).of the biggest – if not the biggest – challenge mankind is facing in the 21st century.