超级电容器
材料科学
介孔材料
碳纳米管
比表面积
纳米技术
介孔二氧化硅
化学工程
碳纤维
催化作用
纳米线
模板方法模式
电容
电极
有机化学
复合材料
复合数
化学
物理化学
工程类
作者
Qian Zhang,Chao Deng,Zaimei Huang,Qingcheng Zhang,Xiaocheng Chai,Deliang Yi,Yuanyuan Fang,Minying Wu,Xingdong Wang,Yi Tang,Yajun Wang
出处
期刊:Small
[Wiley]
日期:2022-12-30
卷期号:19 (12)
被引量:10
标识
DOI:10.1002/smll.202205725
摘要
1D carbon nanotubes have been widely applied in many fields, such as catalysis, sensing and energy storage. However, the long tunnel-like pores and relatively low specific surface area of carbon nanotubes often restrict their performance in certain applications. Herein, a dual-silica template-mediated method to prepare nitrogen-doped mesoporous carbon nanotubes (NMCTs) through co-depositing polydopamine (both carbon and nitrogen precursors) and silica nanoparticles (the porogen for mesopore formation) on a silica nanowire template is proposed. The obtained NMCTs have a hierarchical pore structure of large open mesopores and tubular macropores, a high specific surface area (1037 m2 g-1 ), and homogeneous nitrogen doping. The NMCT-45 (prepared at an interval time of 45 min) shows excellent performance in supercapacitor applications with a high capacitance (373.6 F g-1 at 1.0 A g-1 ), excellent rate capability, high energy density (11.6 W h kg-1 at a power density of 313 W kg-1 ), and outstanding cycling stability (98.2% capacity retention after 10 000 cycles at 10 A g-1 ). Owing to the unique tubular morphology, hierarchical porosity and homogeneous N-doping, the NMCT also has tremendous potential in electrochemical catalysis and sensing applications.
科研通智能强力驱动
Strongly Powered by AbleSci AI