An Organic Pigment as a High‐Performance Cathode for Sodium‐Ion Batteries

Commercial 3,4,9,10-perylene-tetracarboxylicacid-dianhydride (PTCDA) without modification shows promising performance as a cathode for sodium-ion batteries. It exhibits a high reversible capacity of 145 mAh g−1, a rate capability of 91 mAh g−1 at 1000 mA g−1, and a stable cycle life. When discharged to 0.01 V, 15 sodium ions can be incorporated into a PTCDA, exhibiting an extremely high capacity of 1017 mAh g−1. As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.