随着工作频率不断提高,待分析问题的电尺寸也迅速增大,全波分析方法面临着内存需求巨大,仿真周期长等极大的挑战。物理光学[1]方法求解电大问题速度快,资源少,但要求网格划分与矩量法划分规则一致,当处理超电大尺寸模型时,同样面临着网...随着工作频率不断提高,待分析问题的电尺寸也迅速增大,全波分析方法面临着内存需求巨大,仿真周期长等极大的挑战。物理光学[1]方法求解电大问题速度快,资源少,但要求网格划分与矩量法划分规则一致,当处理超电大尺寸模型时,同样面临着网格数量多,仿真时间长,内存需求大等问题。而大面元物理光学(Large Element Physical Optics)方法对传统物理光学基函数相位修正,可以采用大尺寸单元进行网格划分,相比传统的物理光学方法,求解速度更快,需求资源更少,FEKO[2]采用大面物理光学方法可实现超电大尺寸目标的天线分析、天线布局、雷达隐身等。展开更多
Most of the supercapacitors reported in literatures showed little or no flexibility in the working temperature around 150℃. However, the supercapacitors are generally exposed under complex system or extreme temperatu...Most of the supercapacitors reported in literatures showed little or no flexibility in the working temperature around 150℃. However, the supercapacitors are generally exposed under complex system or extreme temperature, such as electric vehicles and extremely cold area. Herein, we successfully fabricated a large-scale robust nanocarbon hybrid film consisting of reduced graphene oxide (rGO), carbon nanotubes (CNTs) and MnOx nano-flowers with the size up to 550 cm^2. The mechanical properties of the hybrid films depend on the ratio o f CNTs. The supercapacitors prepared with the hybrid films exhibit high flexibility and keep their performances in a temperature range from - 20 to 200℃. In addition, the devices display remarkable electrochemical and deformation stability at extrem e temperature. This strategy has a potential for the more efficient preparation of flexible electrode materials.展开更多
文摘随着工作频率不断提高,待分析问题的电尺寸也迅速增大,全波分析方法面临着内存需求巨大,仿真周期长等极大的挑战。物理光学[1]方法求解电大问题速度快,资源少,但要求网格划分与矩量法划分规则一致,当处理超电大尺寸模型时,同样面临着网格数量多,仿真时间长,内存需求大等问题。而大面元物理光学(Large Element Physical Optics)方法对传统物理光学基函数相位修正,可以采用大尺寸单元进行网格划分,相比传统的物理光学方法,求解速度更快,需求资源更少,FEKO[2]采用大面物理光学方法可实现超电大尺寸目标的天线分析、天线布局、雷达隐身等。
基金supported by the Key Research and Development Program of Shandong Province (2017GGX20123)the Fundamental Research Funds for the Central Universities of China (17CX02063 and 18CX02158A)
文摘Most of the supercapacitors reported in literatures showed little or no flexibility in the working temperature around 150℃. However, the supercapacitors are generally exposed under complex system or extreme temperature, such as electric vehicles and extremely cold area. Herein, we successfully fabricated a large-scale robust nanocarbon hybrid film consisting of reduced graphene oxide (rGO), carbon nanotubes (CNTs) and MnOx nano-flowers with the size up to 550 cm^2. The mechanical properties of the hybrid films depend on the ratio o f CNTs. The supercapacitors prepared with the hybrid films exhibit high flexibility and keep their performances in a temperature range from - 20 to 200℃. In addition, the devices display remarkable electrochemical and deformation stability at extrem e temperature. This strategy has a potential for the more efficient preparation of flexible electrode materials.
