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首页> 外文期刊>RSC Advances >Copper incorporated CuxMo6S8 (x >= 1) Chevrel-phase cathode materials synthesized by chemical intercalation process for rechargeable magnesium batteries
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Copper incorporated CuxMo6S8 (x >= 1) Chevrel-phase cathode materials synthesized by chemical intercalation process for rechargeable magnesium batteries

机译：含铜的CuxMo6S8（x> = 1）通过化学插入工艺合成的可充电镁电池的雪佛兰相阴极材料

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摘要

An effective method to control the composition of CuxMo6S8 Chevrel-phase is introduced to incorporate more than 1 mol of Cu in the Mo6S8 Chevrel cathode material for rechargeable Mg batteries. By adopting a chemical intercalation process, CuxMo6S8 (x >= 1) ternary Chevrel phases can be successfully synthesized up to x = 1.7. Through a combination of various structural and electrochemical analyses, it is confirmed that our synthesized products have a homogeneous size and single phase, in contrast with the product made by the conventional method controlling the chemical leaching time, which leads to a high reversible capacity close to the theoretical value at the Cu1.3Mo6S8 electrode. Furthermore, the electrode exhibits excellent discharge rate capability and cycling performance at room temperature. As x in CuxMo6S8 increases further, while the specific capacity decreases, capacity retention is well maintained during cycles. The information obtained from this study would contribute for the utilization of ternary Chevrel phases as cathode materials for rechargeable Mg batteries.
机译：引入一种有效的方法来控制CuxMo6S8 Chevrel相的组成，以便在用于可充电Mg电池的Mo6S8 Chevrel阴极材料中掺入超过1 mol的Cu。通过采用化学插入过程，可以成功合成CuxMo6S8（x> = 1）三元Chevrel相，直至x = 1.7。通过各种结构和电化学分析的组合，证实了我们合成的产品具有均一的尺寸和单相，这与通过传统方法控制化学浸出时间制得的产品相反，这导致了接近Cu1.3Mo6S8电极的理论值。此外，该电极在室温下表现出优异的放电速率能力和循环性能。当CuxMo6S8中的x进一步增加时，尽管比容量降低，但在循环期间可以很好地保持容量保持率。从这项研究中获得的信息将有助于将三元Chevrel相用作可再充电镁电池的阴极材料。

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