High Density 3D Carbon Tube Nanoarray Electrode Boosting the Capacitance of Filter Capacitor  

作　　者：Gan Chen Fangming Han Huachun Ma Pei Li Ziyan Zhou Pengxiang Wang Xiaoyan Li Guowen Meng Bingqing Wei 

机构地区：[1]Key Laboratory of Materials Physics,and Anhui Key Laboratory of Nanomaterials and Nanotechnology,Institute of Solid State Physics,HFIPS,Chinese Academy of Sciences,Hefei 230031,People’s Republic of China [2]Department of Materials Science and Engineering,University of Science and Technology of China,Hefei 230026,People’s Republic of China [3]Department of Mechanical Engineering,University of Delaware,Newark,DE 19716,USA [4]Mechano‑X Institute,Applied Mechanics Laboratory,Department of Engineering Mechanics,Tsinghua University,Beijing 100084,People’s Republic of China

出　　处：《Nano-Micro Letters》2024年第11期242-254,共13页纳微快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(91963202,52072372,52372241,52232007,12325203);HFIPS Director’s Fund(BJPY2023A07,YZJJ-GGZX-2022-01).

摘　　要：Electric double-layer capacitors(EDLCs)with fast frequency response are regarded as small-scale alternatives to the commercial bulky aluminum electrolytic capacitors.Creating carbon-based nanoarray electrodes with precise alignment and smooth ion channels is crucial for enhancing EDLCs’performance.However,controlling the density of macropore-dominated nanoarray electrodes poses challenges in boosting the capacitance of line-filtering EDLCs.Herein,a simple technique to finely adjust the vertical-pore diameter and inter-spacing in three-dimensional nanoporous anodic aluminum oxide(3D-AAO)template is achieved,and 3D compactly arranged carbon tube(3D-CACT)nanoarrays are created as electrodes for symmetrical EDLCs using nanoporous 3D-AAO template-assisted chemical vapor deposition of carbon.The 3D-CACT electrodes demonstrate a high surface area of 253.0 m^(2) g^(−1),a D/G band intensity ratio of 0.94,and a C/O atomic ratio of 8.As a result,the high-density 3D-CT nanoarray-based sandwich-type EDLCs demonstrate a record high specific areal capacitance of 3.23 mF cm^(-2) at 120 Hz and exceptional fast frequency response due to the vertically aligned and highly ordered nanoarray of closely packed CT units.The 3D-CT nanoarray electrode-based EDLCs could serve as line filters in integrated circuits,aiding power system miniaturization.

关 键 词：Compactly arranged Three-dimensional carbon tube nanoarray Dimensional carbon tube nanoarray Fast frequency response Electric double-layer capacitors Layer capacitors AC line-filtering FILTERING 

分 类 号：TM53[电气工程—电器] TB383.1[一般工业技术—材料科学与工程] TQ127.11[化学工程—无机化工]