超级电容器
纳米片
材料科学
储能
纳米技术
灵活性(工程)
微观结构
电容
碳纳米管
功率密度
硫化物
电极
碳纤维
复合材料
功率(物理)
冶金
复合数
化学
物理化学
物理
统计
量子力学
数学
作者
Pengyi Lu,Xiaotong Jiang,Wenlei Guo,Lei Wang,Tao Zhang,Yash Boyjoo,Wenping Si,Feng Hou,Jian Liu,Shi Xue Dou,Ji Liang
出处
期刊:Carbon
[Elsevier]
日期:2021-06-01
卷期号:178: 355-362
被引量:55
标识
DOI:10.1016/j.carbon.2021.02.103
摘要
Flexible energy storage is the bottleneck for a variety of advanced electronic devices, and transition metal sulfides are regarded as an ideal candidate for this application due to their high capacitance, versatile microstructures, and low cost. However, to render this family of materials with high mechanical flexibility while maintaining their favorable electrochemical properties is especially challenging. Herein, we report a [email protected]2S4 hybrid film, in which bunches of ultrathin NiCo2S4 nanosheet are firmly and uniformly anchored on a 3D CNT network. This material possesses tunable microstructures, high mechanical flexibility, good conductivity as well as lightweight, making it readily deployable in a flexible supercapacitor. Significantly, the asymmetric flexible supercapacitor based on this material possesses a high voltage output (1.8 V), a high energy/power density (59.5/34.5 Wh kg−1 at 900/18000 W kg−1), outstanding cycling stability (80.64% capacity retention after 10000 cycles), and excellent mechanical flexibility to withstand various deformations, all without sacrificing its performance. Moreover, this strategy has the potential to be extended to other metal sulfides or other carbon-substrates, which opens new avenues for the facile design and manipulation of flexible functional materials for future energy storage.
科研通智能强力驱动
Strongly Powered by AbleSci AI