Sulfur cathodes have been under intensive study in various systems, such as Li/S, Na/S, Mg/S, and Al/S batteries. However, to date, Zn/S chemistry has never been reported. The first reliable aqueous Zn/polysulfide system activated by a “liquid film” comprising 4‐(3‐butyl‐1‐imidazolio)‐1‐butanesulfoni ionic liquid (IL) encapsulated within PEDOT:PSS. CF₃SO₃⁻ anions in the IL operating as Zn²⁺‐transfer channels is reported. Moreover, the PEDOT:PSS network retains the IL, which renders Zn²⁺‐transfer channels and a polysulfide cathode with enhanced structural stability. The Zn/polysulfide system delivers extraordinary capacity of 1148 mAh g⁻¹ and overwhelming energy density of 724.7 Wh kg⁻¹_cathode at 0.3 Ag⁻¹. During the discharging phase, S₆²⁻ is dominantly reduced by Zn to S²⁻ (S₆ → S²⁻). During the charging phase, these short chains are oxidized to form long‐chain Zn_x Li_y S_3‐6. A further optimized high‐concentrated salt electrolyte is used to improve the reversibility of the battery, demonstrating an extended lifetime over 1600 cycles at 1 Ag⁻¹ with a capacity retention of 204 mAh g⁻¹. This facile approach and the superior performance of the developed aqueous Zn/S chemistry provide a new platform for sulfur‐based battery and potentially solve the problems of other metal/sulfur batteries.

中文翻译：

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通过“液膜”启动可逆的锌/硫水电池。

硫阴极已在各种系统中进行了深入研究，例如Li / S，Na / S，Mg / S和Al / S电池。然而，迄今为止，尚未报道Zn / S化学。第一个可靠的锌/多硫化物水溶液系统由“液体膜”激活，该液体膜包含封装在PEDOT：PSS中的4-（3-丁基-1-咪唑啉酮）-1-丁烷磺酸离子液体（IL）。CF ₃ SO ₃ ^-在IL操作以Zn阴离子²⁺报道-转移通道。此外，PEDOT：PSS网络保留了IL，从而使Zn ²⁺转移通道和聚硫化物阴极具有增强的结构稳定性。锌/多硫化物系统可提供1148 mAh g ^-1的超凡容量和724.7 Wh kg的压倒性能量密度^-1_阴极在0.3的Ag ^-1。在放电阶段，S ₆ ^2-通过Zn主要被还原为S ^2-（S ₆ →S ^2-）。在充电阶段，这些短链被氧化形成长链Zn _x Li _y S _3-6。进一步优化的高浓度盐电解质用于改善电池的可逆性，证明在1 Ag ^-1下在1600个循环中具有更长的使用寿命，容量保持为204 mAh g ^-1。这种简便的方法以及发达的Zn / S水溶液化学性能的卓越性能为硫基电池提供了一个新的平台，并有可能解决其他金属/硫电池的问题。