Oxygen group-containing activated carbon aerogel as an electrode material for supercapacitor
Source abstract
Abstract
Abstract Carbon aerogel was prepared by a sol–gel polymerization of resorcinol–formaldehyde (RF) method, and it was activated with CO 2 to obtain activated carbon aerogel (ACA). A series of modified activated carbon aerogels (MACA- X , X = 3, 6, 9, and 12 h) were then prepared by HNO 3 oxidation of ACA with a variation of oxidation time ( X ) in order to investigate the effect of surface oxygen group on their electrochemical performance as supercapacitor electrode material. Electrochemical properties of ACA and MACA- X were measured by cyclic voltammetry, galvanostatic charge/discharge, and EIS (electrochemical impedance spectroscopy) measurements. Among the samples, MACA-6 h showed the best rate capability and the highest specific capacitance. Thus, an optimal HNO 3 oxidation condition was required for the highest supercapacitive electrochemical performance of modified activated carbon aerogel.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Supercapacitor Materials and Fabrication · Aerogels and thermal insulation · Advanced Sensor and Energy Harvesting Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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