The evolution of inorganic solid electrolytes has revolutionized the field of sustainable organic cathode materials, particularly addressing the dissolution problems in traditional liquid electrolytes. However, current sulfide‐based all‐solid‐state lithium‐organic batteries still face challenges such as high working temperatures, high costs, and low voltage. Here, we design an all‐solid‐state lithium battery based on a cost‐effective organic cathode material phenanthrenequinone (PQ) and a halide solid electrolyte Li2ZrCl6. Thanks to the good compatibility between PQ and Li2ZrCl6, the PQ cathode achieved a high specific capacity of 248 mAh g‐1 (96% of the theoretical capacity), a high average discharge voltage of 2.74 V (vs. Li+/Li), and a good capacity retention of 95% after 100 cycles at room temperature (25 °C). Furthermore, the interaction between the high‐voltage carbonyl PQ cathode and both sulfide and halide solid electrolytes, as well as the redox mechanism of PQ cathode in all‐solid‐state batteries, were carefully studied by a variety of advanced characterizations. We believe such a design and the corresponding investigations for the underlying chemistry give insights into the further development of practical all‐solid‐state lithium‐organic batteries.

中文翻译：

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复兴卤化物基全固态锂电池中具有成本效益的有机阴极


无机固体电解质的发展彻底改变了可持续有机正极材料领域，特别是解决了传统液体电解质的溶解问题。然而，目前的硫化物基全固态锂有机电池仍然面临工作温度高、成本高、电压低等挑战。在这里，我们设计了一种基于具有成本效益的有机正极材料菲醌（PQ）和卤化物固体电解质Li2ZrCl6的全固态锂电池。由于PQ和Li2ZrCl6之间良好的相容性，PQ正极实现了248 mAh g-1的高比容量（理论容量的96%）、2.74 V的高平均放电电压（相对于Li+/Li）和室温 (25 °C) 下循环 100 次后容量保持率高达 95%。此外，通过各种先进的表征，仔细研究了高压羰基PQ阴极与硫化物和卤化物固体电解质之间的相互作用，以及全固态电池中PQ阴极的氧化还原机制。我们相信这样的设计和对基础化学的相应研究可以为实用全固态锂有机电池的进一步开发提供见解。