Chitosan-derived carbon aerogel nanocomposite as an active electrode material for high-performance supercapacitors
Le Hong Quan, Ung Thi Dieu Thuy, Pham Viet Nam, Nguyễn Văn, Tang Xuan Duong, Van Hoa Nguyen
Abstract
The valorization of shrimp wastes to develop advanced materials brings economic and environmental advantages. This paper presents a facile and eco-friendly synthesis of shrimp chitosan-derived carbon (CCS) and CCS/[email protected](OH)2 (CSSN) aerogel nanocomposite for supercapacitor application, in which NiO and Ni(OH)2 nanoparticles were tightly attached to the porous surface of CCS aerogel. As a result, CCSN-300 aerogel carbonized at 300 °C has high porosity and electrical conductivity and demonstrates its potential as an active electrode material for supercapacitors. The CCSN-300 aerogel material electrode exhibits a high capacitance of 316 mAh g−1 at 1.0 A g−1. Furthermore, the CCS//CCSN-300 device had a capacitance of 209 F g−1 at 1.0 A g−1 and over 84% remaining after the 10,000 cycles. Moreover, it has a high energy density of 65 Wh kg−1 at a power density of 1500 W kg−1. The results demonstrate that chitosan-derived carbon composites hold great promise in high application efficiency for energy storage.