The use of redox‐active electrolytes is a good opportunity to increase the energy density of supercapacitors, the main limitation of this technology. The addition of redox molecules allows the storage of charge in the electrode and the electrolyte. The key to keeping the increase of charge is to avoid the shuttle effect of the redox molecule. Indeed, once the molecule is oxidized or reduced, it diffuses across the cell to react at the surface of the opposite electrode and the stored charge is lost. Is this shuttle effect however damageable for the device? This study proposes to answer this question by quantifying the shuttle effect and correlating it to the decrease of Coulombic efficiency of supercapacitors.

中文翻译：

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与超级电容器的库仑效率相关的氧化还原离子液体电解质的穿梭效应定量

使用氧化还原活性电解质是增加超级电容器能量密度的好机会，这是该技术的主要局限。氧化还原分子的添加允许电荷在电极和电解质中的存储。保持电荷增加的关键是避免氧化还原分子的穿梭效应。实际上，一旦分子被氧化或还原，它就会在整个细胞中扩散，在相反电极的表面发生反应，并且所存储的电荷会丢失。这种穿梭效应是否会对设备造成损害？这项研究提出通过量化穿梭效应并将其与超级电容器库仑效率的降低相关联来回答这个问题。