纳微快报（英文）2020，Vol.12Issue(5)：95-105,11.
A Self‑supported Graphene/Carbon Nanotube Hollow Fiber for Integrated Energy Conversion and Storage
摘要
Abstract
Wearable fiber-shaped integrated energy conversion and storage devices have attracted increasing attention, but it remains a big challenge to achieve a common fiber electrode for both energy conver-sion and storage with high performance. Here, we grow aligned carbon nanotubes (CNTs) array on continuous graphene (G) tube, and their seam-lessly connected structure provides the obtained G/CNTs composite fiber with a unique self-supported hollow structure. Taking advantage of the hollow structure, other active materials (e.g., polyaniline, PANI) could be easily functionalized on both inner and outer surfaces of the tube, and the obtained G/CNTs/PANI composite hollow fibers achieve a high mass loading (90%) of PANI. The G/CNTs/PANI composite hollow fibers can not only be used for high-performance fiber-shaped supercapacitor with large specific capacitance of 472 mF -cm?2, but also can replace platinum wire to build fiber-shaped dye-sensitized solar cell (DSSC) with a high power conversion effciency of 4.20%. As desired, the integrated device of DSSC and supercapacitor with the G/CNTs/PANI composite hollow fiber used as the common electrode exhibits a total power conversion and storage effciency as high as 2.1%. Furthermore, the self-supported G/CNTs hollow fiber could be further functionalized with other active materials for building other flexible and wearable electronics.关键词
Carbon nanotube/Graphene/Integrated/Energy conversion/Energy storageKey words
Carbon nanotube/Graphene/Integrated/Energy conversion/Energy storage引用本文复制引用
Kai Liu,Zilin Chen,Tian Lv,Yao Yao,Ning Li,Huili Li,Tao Chen..A Self‑supported Graphene/Carbon Nanotube Hollow Fiber for Integrated Energy Conversion and Storage[J].纳微快报（英文）,2020,12(5):95-105,11.基金项目
This work is supported by the National Natu-ral Science Foundation of China (Nos. 21774094, 51702237, and 51973159), Science and Technology Commission of Shanghai Municipality (14DZ2261100), Shanghai Rising–Star Program (17QA1404300), the Youth Talent Support Program at Shang-hai, the Fundamental Research Funds for the Central Universities (Tongji University). （Nos. 21774094, 51702237, and 51973159）
