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Updated: Jul 12, 2026

Synthesis and Functionalization of 3D Nano-graphene Materials: Graphene Aerogels and Graphene Macro Assemblies
Published on: November 5, 2015
Chitosan-derived carbon and NiCo2O4 aerogel composite for high-performance supercapacitors
Le Hong Quan1, Ung Thi Dieu Thuy2, Nguyen Van Chi3
1Coastal Branch of the Joint Vietnam - Russia Tropical Science and Technology Research Center, Viet Nam; Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Viet Nam.
Abstract:
This work presents a multi-step strategy to fabricate chitosan-derived nitrogen-doped carbon (CCS) and CCS/NiCo2O4 (CNCO) aerogels for supercapacitor application. The various mass fractions of NiCo precursors and chitosan as well as different carbonization temperatures, were investigated. The best rationally designed aerogel carbonized at 300 °C (CNCO-2) had the highest specific surface area and nitrogen content. It exhibited a high capacitance of 1200 F g-1 at 1.0 A g-1 as an active electrode material for supercapacitors. In addition, the fully solid-state CCS//CNCO-2 device had a high capacitance of 172 F g-1 at 1.0 A g-1 and excellent cyclic stability (over 87 % capacitance retention after 10,000 cycles). This device displayed a maximum energy density of 53 Wh kg-1 at 750 W kg-1. Furthermore, two devices connected in series and parallel indicate typical voltage and capacitance expansion, highlighting practicable applications of chitosan-derived aerogel composites to meet different requirements in energy storage.
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