NDLI: Ultrahigh performance supercapacitors utilizing core–shell nanoarchitectures from a metal–organic framework-derived nanoporous carbon and a conducting polymer

Content Provider	Royal Society of Chemistry (RSC)
Author	Kobayashi, Naoya Salunkhe, Rahul R. Kim, Jeonghun Tominaka, Satoshi Tang, Jing Kim, Jung Ho Ide, Yusuke Yamauchi, Yusuke
Copyright Year	2016
Abstract	Hitherto, many reports on composite materials for electrochemical applications are based on one-dimensional carbon nanotubes or two-dimensional graphene materials. However, these composite materials usually suffer from a stacking problem during electrochemical cycling. A smart nanoarchitectural design is needed for composite materials in order to overcome this problem. Recent research on electrochemical energy storage (EES) applications has focused on the development of three-dimensional (3-D) core–shell structures. The basis for high performance electrochemical energy storage is to control the efficient intercalation of ions in such a 3-D structure. Here, we demonstrate controlled synergy between the physicochemical properties of nanoporous carbon and conducting polyaniline polymer (carbon–PANI), which leads to some new interesting electrochemical properties. The time-dependent controlled optimization of the core–shell nanocomposites consisting of nanoporous carbon with a thin layer of PANI nanorod arrays gives useful control over supercapacitor performance. Furthermore, these carbon–PANI nanocomposites can electrochemically access ions with remarkable efficiency to achieve a capacitance value in the range of 300–1100 F g−1. When assembled in a two electrode cell configuration, the symmetric supercapacitor (SSC) based on carbon–PANI//carbon–PANI shows the highest specific energy of 21 W h kg−1 and the highest specific power of 12 kW kg−1. More interestingly, the SSC shows capacitance retention of 86% after 20 000 cycles, which is highly superior compared to previous research reports.
Starting Page	5704
Ending Page	5713
Page Count	10
File Format	HTM / HTML PDF
ISSN	20416520
Volume Number	7
Issue Number	9
Journal	Chemical Science
DOI	10.1039/c6sc01429a
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Subscribed
Subject Keyword	Power density Electrode Polymer Energy density Polyaniline Carbon Three-dimensional space Carbon nanotube Graphene Electrochemistry Supercapacitor Capacitance Mathematical optimization
Content Type	Text
Resource Type	Article
Subject	Chemistry

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