1,4-Dialkoxybenzene additives are commonly used as redox active shuttles in lithium-ion batteries in order to prevent runaway oxidation of electrolyte when overcharge conditions set in. During this action the shuttle molecule goes through a futile cycle, becoming oxidized at the cathode and reduced at the anode. Minimizing parasitic reactions in all states of charge is paramount for sustained protective action. Here we demonstrate that recently developed bis-annulated 9,10-bis(2-methoxyethoxy)-1,2,3,4,5,6,7,8-octahydro-1,4:5,8-dimethano-anthracene shuttle molecule (that yields exceptionally stable radical cations) survives over 120 cycles of overcharge abuse with 100% overcharge ratio at C/5 rate. Equally remarkably, in the presence of this additive the cell impedance becomes significantly lower compared to the control cells without the additive; this decrease is observed during the formation, normal cycling, and even under overcharge conditions. This unusual dual action has not been observed in other redox shuttle systems, and it presents considerable practical interest.

1,4-二烷氧基苯添加剂通常用作锂离子电池中的氧化还原活性梭，以防止在进入过充电条件时电解质失控氧化。在此过程中，梭分子经历一个无效的循环，在阴极和阴极上被氧化。在阳极还原。在所有充电状态下使寄生反应最小化对于持续的保护作用至关重要。在这里，我们表明，最近开发的双稠9,10-二（2-甲氧基乙氧基）-1,2,3,4,5,6,7,8-八氢-1,4：5,8-二甲蒽班车分子（产生异常稳定的自由基阳离子）在120次过充电滥用循环中幸存下来，C处的过充电比率为100％/ 5率。同样明显的是，与没有添加剂的对照电池相比，在存在这种添加剂的情况下，电池阻抗明显降低。这种降低在地层，正常循环甚至在过充条件下都可以观察到。在其他氧化还原穿梭系统中未观察到这种异常的双重作用，并且它具有相当大的实际意义。