ECSarXiv is a free online service for preprints and other preliminary communications not yet published in a peer-reviewed outlet, which facilitates the rapid exchange of ideas in electrochemistry and solid state science and technology. It is operated by ECS, a nonprofit scholarly society. There is no charge to submit, and no charge to read the posts.

ECSarXiv is part of the greater ECS Free the Science initiative, which is a long-term vision to make our research freely available to all readers, while remaining free for authors to publish. It is a new model for ECS, one of the last independent, nonprofit scientific society publishers.