Increasing attention has been paid to develop flexible integrated energy devices, but it remains a big challenge to achieve a common electrode for building both energy conversion and storage devices with high performance. Here, we for the first time selectively functionalize polyaniline (PANI) and platinum (Pt) inside different segments of chemical vapor deposition grown continuous graphene tube, achieving selectively functionalized graphene composite (PANI//Pt@G) fibers. The PANI@G and Pt@G parts could be used as efficient electrodes for supercapacitor with a specific capacitance of 284 mF cm⁻² and dye-sensitized solar cell with a power conversion efficiency of 4.73%, respectively. By using a PANI//Pt@G fiber as the common electrode, an integrated energy device with a total energy conversion and storage efficiency of 3.07% is realized. The continuous graphene tubes could be functionalized with other active materials for other flexible and wearable electronics.

开发柔性集成式能量装置已引起越来越多的关注，但是实现用于构建高性能的能量转换和存储装置的通用电极仍然是一个巨大的挑战。在这里，我们首次在化学气相沉积生长的连续石墨烯管的不同段内对聚苯胺（PANI）和铂（Pt）进行了选择性功能化，从而实现了选择性功能化的石墨烯复合材料（PANI // Pt @ G）纤维。PANI @ G和Pt @ G零件可用作比电容为284 mF cm ^-2的超级电容器的有效电极染料敏化太阳能电池的功率转换效率分别为4.73％。通过使用PANI // Pt @ G纤维作为公共电极，可以实现总能量转换和存储效率为3.07％的集成式能量装置。连续石墨烯管可以用其他活性材料功能化，用于其他柔性和可穿戴电子设备。