Hierarchically porous zeolite-templated carbon embedded with manganese oxide for long-cycling asymmetric supercapacitor

被引:2
|
作者
Khan, Sourav [1 ]
Park, Hanyoung [1 ,2 ]
Kim, Kyoungsoo [3 ,4 ]
Park, Hongjun [1 ,6 ]
Ryoo, Ryong [1 ,2 ,5 ,6 ]
机构
[1] Inst Basic Sci IBS, Ctr Nanomat & Chem React, Daejeon 34141, South Korea
[2] Korea Adv Inst Sci & Technol KAIST, Dept Chem, Daejeon 34141, South Korea
[3] Jeonbuk Natl Univ, Dept Chem, Jeonju 54896, Jeollabuk Do, South Korea
[4] Jeonbuk Natl Univ, Res Inst Phys & Chem, Jeonju 54896, Jeollabuk Do, South Korea
[5] Korea Inst Energy Technol KENTECH, Dept Energy Engn, Naju 58330, Jeollanam Do, South Korea
[6] Inst for Basic Sci Korea, Ctr Nanomat & Chem React, Daejeon 34141, South Korea
关键词
Asymmetric supercapacitor; Encapsulation effect; Hierarchically porous material; Manganese oxide; Zeolite-templated carbon; ELECTRICAL ENERGY-STORAGE; HIGH-PERFORMANCE; ELECTRODE MATERIALS; MNO2; CAPACITOR; BATTERY; DENSITY; NANOSTRUCTURES; NANOSHEETS;
D O I
10.1016/j.micromeso.2024.113050
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
Manganese oxide-carbon composite materials were prepared by impregnation of manganese nitrate solution into a hierarchically meso-microporous zeolite-templated carbon. The manganese component was majorly incorporated within the mesoporous region as encapsulated by an open microporous carbon framework. Analysis of the composite structure by electron microscopy and nitrogen adsorption showed a possibility for mitigating the manganese leaching problem while facile diffusion of the electrolyte ions was allowed through microporous carbon windows built with sp2 frameworks. This analysis was consistent with the enhanced cycling stability of the asymmetric supercapacitor in an aqueous medium.
引用
收藏
页数:8
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