A bipolar porphyrin molecule for stable dual-ion symmetric batteries with high potential

The small molecule 5,15-di(thiophen-2-yl) porphyrin (TP) was developed for new dual-ion symmetric organic batteries (DSOBs). It delivered a capacity of 150 mA h g −1 at 0.2 A g −1 with a high voltage of 2.7 V, and up to 1500 cycles were achieved. This work offers a new approach for developing high-performance dual-ion organic symmetric batteries. An symmetric organic battery using functionalized porphyrin molecules as both the cathode and anode enables a discharge potential of 2.7 V and stable cycling up to 1500 times.