超级电容器
纳米复合材料
聚苯胺
材料科学
电极
化学工程
电池(电)
储能
纳米技术
电容
导电聚合物
聚合物
化学
复合材料
量子力学
聚合
物理
工程类
物理化学
功率(物理)
作者
Jihyeon Park,Seungju Jo,Narasimharao Kitchamsetti,Shakir Zaman,Daewon Kim
标识
DOI:10.1016/j.jallcom.2022.166815
摘要
Recently, various electroactive materials composed of binary transition metal oxides (TMOs), and conducting polymers have been extensively studied, with the materials demonstrating great potential in high-performing battery-type electrodes. Furthermore, the development of heterogeneous nanocomposites is a versatile approach because of their well-defined surface morphology and the significant synergistic effect of the various species. In this study, NiCo2O4 (NCO) combined with polyvinyl pyrrolidone (PVP) and polyaniline (PANI) hybrid nanocomposites of NCO/PVP/PANI are newly developed using a facile hydrothermal method. The NCO in combination with PVP and PANI species provides the interconnected hierarchical characteristics by offering large electroactive sites that facilitate the charge transfer. The NCO/PVP/PANI1.5 nanocomposites had a high areal capacity of 698.44 µAh cm−2 at a current density of 4 mA cm–2 and a remarkable capacitance retention of 86 % over 4,000 galvanostatic charge/discharge (GCD) cycles owing to its excellent synergistic effect of the rich faradaic redox reaction kinetics of metallic species, and highly conductive materials. Moreover, the proposed NCO/PVP/PANI1.5 battery-type positive electrode was successfully assembled with an activated carbon negative electrode, resulting a hybrid device with a high energy density of 27.60 Wh kg−1 at a power density of 874.9 W kg−1 and excellent cycling stability. This research holds the significant promise for advanced heterogeneous materials in energy storage systems by describing the newly developed nanocomposites.
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