anthraquinones

The cycle of decomposition and recomposition. During normal charge and discharge, the zombie molecule oscillates between its DHAQ2- form (left) and its DHAQ4- form (bottom center). When it decomposes, it turns into DHA2- (right). A voltage pulse resets the decomposed molecules (right) back to their original form (left). Credit: Yan Jing/Harvard SEAS
Toppling a major barrier to the commercialization of organic aqueous flow batteries