title: Nanomaterials for Electrochemical Energy Storage: the Good and the Bad.
abstract: A critical view on the outcome of research in nanomaterials for electrochemical energy storage devices (batteries and supercapacitors) is provided through selected examples. The nano- approach traces back to the early battery research and its benefits realized even before the nano- term was coined. It has enabled important progresses which have translated, for instance, in the possibility of using LiFePO4 as electrode material. On the other hand, the nano- approach has also been oversold at all levels and hence some examples are also shown on the detrimental side effects of the use of nano-materials which should be taken into account if steady progress is to be made that finally results in practical benefits in energy storage devices.
authors.forename: Maria Rosa
authors.initials: MR
authors.lastname: Palacín
authors.forename: Patrice
authors.initials: P
authors.lastname: Simon
authors.forename: Jean Marie
authors.initials: JM
authors.lastname: Tarascon