期刊
JOURNAL OF POROUS MATERIALS
卷 28, 期 6, 页码 1999-2011出版社
SPRINGER
DOI: 10.1007/s10934-021-01115-y
关键词
Sodium carboxymethyl cellulose; Carbon aerogels; Polypyrrole; Supercapacitors
资金
- Fundamental Research Funds for Central Universities [E2572017EB05]
- Heilongjiang Province outstanding youth science fund [JC201301]
In this study, hierarchical porous magnetic activated carbon aerogel/polypyrrole composites were synthesized through a facile method, exhibiting high specific surface area and specific capacitance. The composite material shows great potential as a high-performance electrode material with outstanding electrochemical performance and long cycling stability.
In this work, hierarchical porous magnetic activated carbon aerogels (aCA)/polypyrrole (PPy) composites were synthesized by a facile and cost effective in situ oxidation polymerization. Three-dimensional (3D) interconnected porous aCA with a high specific surface area (820.1 m(2) g(-1)) was prepared by a sol-gel process via carbonization and KOH activation by using sodium carboxymethyl cellulose (CMC) and ferric trichloride as carbon precursors and cross-linking agents. The aCA served as a good skeleton for the growth of PPy particles on the surface. Via the cooperative effect of an interconnected porous network structure from aCA and the high capacitive property provided by PPy, the aCA/PPy electrode exhibited a high specific capacitance of 433 F g(-1) at a current density of 0.5 A g(-1). Moreover, it also exhibited outstanding long-period cycling performance of similar to 87.2% capacitance retention after 5,000 cycles of consecutive charge/discharge tests. Additionally, the asymmetric supercapacitor demonstrated high energy density of 2.59 W h kg(-1) at the power density of 1266 W kg(-1). This work provides a novel path for preparing aCA/PPy composites with great potential as a candidate high performance electrode material on energy storage.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据