新型炭材料2022，Vol.37Issue(5)：978-987,10.DOI:10.1016/S1872-5805(22)60641-3
基于二维分子刷的超结构碳纳米网络的可控制备及其柔性超级电容器性能
Controllable fabrication of superhierarchical carbon nanonetworks from 2D molecular brushes and their use in electrodes of flexible supercapacitors
摘要
Abstract
Three-dimensional carbon nanonetworks (3D CNNs) have interconnected conductive skeletons and accessible pore structures, which provide multi-level transport channels and thus have promising applications in many areas. However, the physical stacking of these network units to form long-range conductive paths is hard to accomplish, and the introduction of micropores and small mesopores is usually difficult. We report a simple yet efficient strategy to construct CNNs with a nitrogen-doped micro-meso-macroporous carbon nanonetwork using Schiff-base gelation followed by carbonization. Using a polyacrolein-grafted graphene ox-ide molecular brush as the building block and tetrakis (4-aminophenyl) methane as the crosslinking agent, the obtained molecular brush nanonetworks have a high carbon yield and largely retain the original morphology, leading to the formation of a 3D continu-ous nanonetwork after carbonization. The materials have a micro-meso-macroporous structure with a high surface area and a highly conductive N-doped carbon backbone. This unique structure has a large number of exposed active sites and excellent charge/mass transfer ability. When loaded on carbon cloth and used as the electrodes of a flexible supercapacitor, the CNN has a specific capacit-ance of 180 F g?1 at 1 A g?1 and a high capacitance retention of 91.4％ after 10000 cycles at 8 A g?1 .关键词
分子刷/碳纳米网络/超结构碳/柔性超级电容器Key words
Molecular brushes/Carbon nanonetworks/Superhierarchical carbon/Flexible supercapacitors分类
化学化工引用本文复制引用
卢宇恒,唐友臣,唐克寒,吴丁财,马倩..基于二维分子刷的超结构碳纳米网络的可控制备及其柔性超级电容器性能[J].新型炭材料,2022,37(5):978-987,10.基金项目
国家自然科学基金(51925308和51872336) （51925308和51872336）
国家重点研发计划(2021YFF0500600).The authors are grateful for the financial support from the projects of National Natural Science Founda-tion of China(51925308 and 51872336)and National Key Research and Development Program of China(2021YFF0500600). （2021YFF0500600）
