超级电容器
材料科学
功率密度
电极
电流密度
化学工程
比表面积
多孔性
储能
简单(哲学)
电容
比能量
体积热力学
碳纳米泡沫
纳米技术
复合材料
功率(物理)
催化作用
化学
有机化学
认识论
物理
工程类
哲学
物理化学
量子力学
作者
Jun Wang,Jiangting Wang,Guisheng Zhu,Hui Xu,Xiuyun Zhang,Yunyun Zhao,Jian Zhang,Kunpeng Jiang,Aibing Yu
标识
DOI:10.1016/j.est.2021.103907
摘要
In this work, to reduce the “dead volume” due to the accumulation of synthesized products, the foam-structured NiCo2S4 (FSNCS) with a specific surface area of 25.4 m2 g −1 was successfully synthesized by using well-dispersed SiO2 nanospheres as the framework. The FSNCS exhibited 559.3 C g −1 at a current density of 1 A g −1, which was 173.3 C g −1 higher than the performance of the NCS synthesized without the addition of SiO2. Additionally, a hybrid supercapacitor is successfully assembled with FSNCS as the positive electrode and active carbon (AC) as the negative electrode. The FSNCS//AC displays maximum specific energy of 28.8 Wh kg−1 at a specific power of 375.0 W kg−1, together with good cyclic life with 88.9% capacity retention over 5000 cycles at 8 A g −1. It is worth noting that the hybrid supercapacitor can provide strong power for the operation of the motor fan. The simple structure design provides an innovative and effective way to develop high-performance energy storage devices.
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