Sodium sulfonate groups substituted anthraquinone was successfully tested as an organic positive electrode material in potassium batteries. As an organic cathode material, enhanced electrochemical performance was demonstrated for anthraquinone-1,5-disulfonic acid sodium salt, notably a good cycling stability and a capacity retention of 78 mAh g^− 1 after 100 cycles. The findings offer an effective way to develop high performance organic electrode materials for potassium batteries.

中文翻译：

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磺酸钠基团取代了蒽醌作为钾电池的有机阴极

磺酸钠基团取代的蒽醌已成功测试为钾电池中的有机正极材料。作为一种有机阴极材料，蒽醌-1,5-二磺酸钠盐的电化学性能得到了增强，特别是具有良好的循环稳定性，经过100次循环后容量保持率达78 mAh g ^-1。这些发现为开发用于钾电池的高性能有机电极材料提供了有效的方法。