Ultrahigh-power electrochemical double-layer capacitors based on structurally integrated 3D carbon tube arrays  

作　　者：Fangming Han Guowen Meng Dou Lin Gan Chen Shiping Zhang Ou Qian Xiaoguang Zhu 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,Hefei Institute of Physical Science,Chinese Academy of Sciences,Hefei 230031,China [2]Department of Materials Science and Engineering,University of Science and Technology of China,Hefei 230026,China [3]Department of Mechanical Engineering,University of Delaware,Newark,DE 19716,USA

出　　处：《Nano Research》2023年第11期12849-12854,共6页纳米研究（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.91963202,52072372,and 52232007).

摘　　要：The rational design of electrodes is the key to achieving ultrahigh-power performance in electrochemical energy storage devices.Recently,we have constructed well-organized and integrated three-dimensional(3D)carbon tube(CT)grids(3D-CTGs)using a 3D porous anodic aluminum oxide template-assisted method as electrodes of electrical double-layer capacitors(EDLCs),showing excellent frequency response performance.The unique design warrants fast ion migration channels,excellent electronic conductivity,and good structural stability.This study achieved one of the highest carbon-based ultrahigh-power EDLCs with the 3D-CTG electrodes,resulting in ultrahigh power of 437 and 1708 W·cm−3 with aqueous and organic electrolytes,respectively.Capacitors constructed with these electrodes would have important application prospects in the ultrahigh-power output.The rational design and fabrication of the 3D-CTGs electrodes have demonstrated their capability to build capacitors with ultrahighpower performance and open up new possibilities for applications requiring high-power output.

关 键 词：ultrahigh-power double-layer capacitor structurally integrated three-dimensional(3D)carbon tube smooth ion migration channels 

分 类 号：O64[理学—物理化学]