High Performance Supercapacitors Based on Mesopore Structured Multiwalled Carbon Nanotubes.

ABSTRACT: A 3D CNT/few layered graphene construct (CNT-FLG) with mesopore structure was fabricated and applied in supercapacitors. The structure was acquired through a two-step method. Firstly, commercial multiwalled carbon nanotubes (MCNTs) were oxidized in a mixed solution of concentrated acid and modified with a couple of long-chain organic ions. Second, the above resultant product was carbonized at a high temperature. The achieved structure offers a 3D interconnected electrically conductive network as well as mesopore structure. It also significantly improves the specific surface area of MCNTs. Result of BET tests showed that the specific surface area of CNT-FLG reached to 2235 m² /g. When acted as electrode materials in a supercapacitor structure, specific capacitance was approximate

SUBMITTER: Xu Y 

PROVIDER: S-EPMC7953479 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature