Nitrogen-rich hierarchically porous carbon foams as high-performance electrodes for lithium-based dual-ion capacitor  

作　　者：Yue Chen Xiaoming Qiu Li-Zhen Fan 

机构地区：[1]Beijing Advanced Innovation Center for Materials Genome Engineering,Institute for Advanced Materials and Technology,University of Science and Technology Beijing,Beijing 100083,China [2]Shanxi Key Laboratory of New Energy Materials and Devices,Taiyuan University of Technology,Taiyuan 030024,Shanxi,China

出　　处：《Journal of Energy Chemistry》2020年第9期187-194,I0006,共9页能源化学（英文版）

基　　金：Financial supports from the National Natural Science Foundation of China(51872027);Beijing Natural Science Foundation(L172023)。

摘　　要：Nitrogen-rich porous carbonaceous materials have shown great potential in energy storage and conversion applications due to their facile fabrication,high electronic conductivity,and improved hydrophilic property.Herein,three-dimensional porous N-rich carbon foams are fabricated through a one-step carbonization-activation method of the commercial melamine foam,and displaying hierarchically porous structure(macro-,meso-,and micro-pores),large surface area(1686.5 m2 g^-1),high N-containing level(3.3 at%),and excellent compressibility.The as-prepared carbon foams as electrodes for quasi-solid-state supercapacitors exhibit enhanced energy storage ability with 210 F g^-1 and 2.48c at 0.1 A g^-1,and150 F g^-1 and 1.77 F cm^-2 at 1 A g^-1,respectively.Moreover,as an electrode for lithium-based dual-ion capacitor,this distinctive porous carbon also delivers remarkable specific capacitance with 143.6 F g^-1 at0.1 A g^-1 and 116.2 F g^-1 at 1 A g^-1.The simple preparation method and the fascinating electrochemical performance endow the N-rich porous carbon foams great prospects as high-performance electrodes for electrochemical energy storage.

关 键 词：Nitrogen-rich Carbon foam Hierarchically porous structure Dual-ion capacitor 

分 类 号：TM53[电气工程—电器] TB383.4[一般工业技术—材料科学与工程]