用于对称超级电容器器件架构的具有出色循环稳定性的苝二亚胺/石墨箔基电极材料,Energy Technology

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用于对称超级电容器器件架构的具有出色循环稳定性的苝二亚胺/石墨箔基电极材料
Energy Technology ( IF 3.6 ) Pub Date : 2022-04-21 , DOI: 10.1002/ente.202200154
Madan R. Biradar _{1,

2} , Amol M. Kale ₃ , Byung Chul Kim ₃ , Sidhanath V. Bhosale _{1,

2} , Sheshanath V. Bhosale ₄

Affiliation

在此，使用现代技术合成并表征了吡啶官能化萘二亚胺 (NDI-Py) 和苝二亚胺 (PDI-Py) 衍生物。NDI-Py 和 PDI-Py 与石墨箔 (GF) 结合用作超级电容器 (SC) 应用的电极材料。在三电极体系下，基于 NDI-Py/GF 和 PDI-Py/GF 复合电极的电极材料在 5 mV s ^-1的循环伏安下表现出约 118 和 179 F g ^{-1的比电容（}C _sp ）。 (CV) 和 132 和 197 F g ^-1在 1 A g ^-1从恒电流充电 - 放电（GCD）曲线。这些电极的电化学性能行为主要由表面反应以及法拉第氧化还原反应（如赝电容）贡献。相应的基于 PDI-Py/GF//PDI-Py/GF 的双电极对称 SC 器件在 1 A g ^-1电流下的功率密度为 3060 W kg ^{-1时表现出 46 Wh kg}^-1的高能量密度密度，在 13 Wh kg ^-1和 15 300 W kg ^-1能量密度和功率密度下进一步保持，分别为 5 A g ^-1当前密度。此外，基于 PDI-Py/GF//PDI-Py/GF 的对称 SC 器件在 10 000 次充放电循环中表现出出色的循环稳定性，同时保持 95% 的原始电容。

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Perylenediimide/Graphite Foil-Based Electrode Materials with Outstanding Cycling Stability for Symmetric Supercapacitor Device Architectures

Herein, pyridine functionalized naphthalenediimide (NDI-Py) and perylenediimide (PDI-Py) derivatives are synthesized and characterized using modern techniques. NDI-Py and PDI-Py in combination with graphite foil (GF) are employed as electrode materials for supercapacitor (SC) applications. Under the three-electrode system, the electrode materials based on NDI-Py/GF and PDI-Py/GF composite electrode exhibit specific capacitance (C _sp) of about 118 and 179 F g⁻¹ at 5 mV s⁻¹ from cyclic voltammetry (CV) and 132 and 197 F g⁻¹ at 1 A g⁻¹ from galvanostatic charge–discharge (GCD) curves. The electrochemical performance behaviors of these electrodes are mainly contributed by surface reactions along with the Faradaic redox reactions such as pseudocapacitance. The corresponding two-electrode symmetric SC device based on PDI-Py/GF//PDI-Py/GF exhibits a high energy density of 46 Wh kg⁻¹ at a power density of 3060 W kg⁻¹ at 1 A g⁻¹ current density, which is further retained at 13 Wh kg⁻¹ and 15 300 W kg⁻¹ energy and power density, respectively, at 5 A g⁻¹ current density. Moreover, the symmetrical SC device based on PDI-Py/GF//PDI-Py/GF shows outstanding cyclic stability for 10 000 charge–discharge cycles while maintaining 95% of the original capacitance.

更新日期：2022-04-21

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