Maximized Energy Density of RuO2//RuO2 Supercapacitors through Potential Dependence of Specific Capacitance,ChemElectroChem

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Maximized Energy Density of RuO2//RuO2 Supercapacitors through Potential Dependence of Specific Capacitance
ChemElectroChem ( IF 3.5 ) Pub Date : 2020-01-29 , DOI: 10.1002/celc.201901898
Yilun Wang ₁ , Dawei Gu ₁ , Jiaren Guo ₁ , Mingyang Xu ₁ , Hongshun Sun ₂ , Jishu Li ₃ , Lei Wang ₁ , Linjiang Shen _{1,

3}

Affiliation

In this study, a stepwise cyclic voltammetry approach was proposed to clarify the potential dependence of specific capacitance for reduced graphene oxide and ruthenium oxide electrodes. Based on the relationship between specific capacitance and potential, the working voltage window and energy density of RuO₂//RuO₂ supercapacitors (SCs) were maximized by modulating the mass ratio. The working voltage window of RuO₂//RuO₂ with a mass ratio of 2.03 (close to optimum mass ratio $urn:x-wiley:21960216:media:celc201901898:celc201901898-math-0001$ ) was extended by about 188 % when compared to that calculated at a mass ratio of 0.56. The former was equivalent to a 304 % increase in energy density. In addition, the source of wasted potential window of electrodes on RuO₂//RuO₂ was investigated in an effort to design and produce better SCs.

中文翻译：

通过比电容的潜在依赖性最大化RuO2 // RuO2超级电容器的能量密度

在这项研究中，提出了一种逐步循环伏安法，以阐明还原型氧化石墨烯和氧化钌电极的比电容对电位的依赖性。根据比电容与电势之间的关系，通过调节质量比，使RuO ₂ // RuO ₂超级电容器（SCs）的工作电压窗口和能量密度最大化。与以0.56的质量比计算的相比，质量比为2.03（接近最佳质量比）的RuO ₂ // RuO ₂的工作电压窗口 $缸：x-wiley：21960216：media：celc201901898：celc201901898-math-0001$ 扩大了约188％。前者相当于能量密度增加了304％。另外，RuO ₂上电极浪费的电势窗口的来源// RuO ₂被研究以设计和生产更好的SC。

更新日期：2020-01-30

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