超级电容器
电化学
材料科学
电容
水溶液
电极
化学工程
功率密度
复合数
纳米技术
复合材料
化学
功率(物理)
量子力学
物理
工程类
物理化学
作者
Jian Zhou,Leixiang Gu,Zhaojie Zhu,Dongsheng Li,Wen-He Zhong,Xueying Li,Lizhuang Chen,Xiaofang Cheng,Yuanyuan Dan
标识
DOI:10.1016/j.ijhydene.2022.01.155
摘要
The PbO2/WO3·H2O composite is prepared by embedding the suspending WO3·H2O nanosheets into the PbO2 matrix during the galvanostatic deposition. The PbO2 matrix provides a metal-like conductive platform for WO3·H2O nanosheets, and the doping of WO3·H2O nanosheets improves the utilization rate and specific capacitance of the PbO2 electrode material. At the same time, the sulfate effect of PbO2 is reduced and its cycle life is prolonged. Therefore, the PbO2/WO3·H2O composite has a high specific capacitance (∼515 F/g), a large electrochemical active area, a large electrochemical window (∼2 V), and a long life. The PbO2/WO3·H2O//AC AHS based on the PbO2/WO3·H2O positive electrode presents high working voltage of 2.25 V, high specific capacitance of 114.5 F/g, high energy density of ∼49.8 Wh/kg, high power density of ∼358.6 W/kg, and long lifespan over traditional aqueous hybrid supercapacitor (at 10 mA/cm2).
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