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Eyln

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[求助] 功率密度是不是与放电电流密度可以直接转换??

Anchoring Hydrous RuO2 on Graphene Sheets for High-Performance Electrochemical Capacitors. Adv. Funct. Mater. 2010, 20, 3595–3602
这个文献里面提到了用两电极测能量密度和功率密度,但没说ED和PD的计算公式,结果如下:
The highest energy density obtained for ROGSCs is 20.1 Wh/kg while the corresponding power density is 50 W/kg (0.1 A/g ). This value is slightly less than that of RuO2 (22.2 Wh/kg), but much higher than that of GSs (3.1 Wh/kg). With increasing power density from 100 W/kg (0.2 A/g) to 1000 W/kg (2 A/g), the energy densities drop very slowly from 22.1 to 17.7 Wh/kg for RuO2 and from 16.6 to 14.0 Wh/kg for ROGSCs. However, …ROGSCs still retain a high energy density of 7.2 Wh/kg at 5000 W/kg (10 A/g) and 4.3 Wh/kg at power densities as high as 10000 W/kg  (20 A/g), thereby exhibiting the good power characteristic of ECs.

感觉这个功率密度与放电电流密度“ 50 W/kg (0.1 A/g )”“ 100 W/kg (0.2 A/g) ”“1000 W/kg (2 A/g)”“5000 W/kg (10 A/g)”“10000 W/kg  (20 A/g )”可以换算
请问有没有大侠知道怎么换算的?
那PD应该用P=E/t 还是P=V2/4mR计算?两个公式有什么区别?
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