Metal-Sulphur batteries using metallic MoS2 cathodes

我的博士项目涉及使用相位工程金属MoS 2阴极用于金属硫（M-S）电池。我将以我们小组最近的发现为基础，即由分散在锂化金属1 T相MoS 2纳米片支架上的非导电硫制成的阴极提供了优异的Li-S电池性能。虽然锂化的二硫化钼阴极工作得非常好，但锂金属阳极的挑战（安全性、寿命）仍然存在。因此，我将寻求研究纯锂金属阳极的替代品。我将从用钠取代锂金属开始，以实现Na-S电池。我将研究锂化MoS 2阴极在Na-S电池中的性能。然后，我将研究1 T相MoS 2电极的预辐射，以比较锂化电极与钠化电极的性能。我将对合成的锂化和钠化二硫化钼进行详细的表征，进行详细的电化学测量，分析数据，并得出科学结论。Na-S电池尚未得到广泛研究，因此为新的突破提供了机会。

My PhD project deals with using phase engineered metallic MoS2 cathodes for metal-sulphur (M-S) batteries. I will build on our group's recent discovery that cathodes made from non-conducting sulphur dispersed on lithiated metallic 1T phase MoS2 nanosheet scaffolds provide excellent performance of Li-S batteries. While the lithiated MoS2 cathodes work exceptionally well, the challenges (safety, lifetime) of lithium metal anode remain. I will therefore seek to study alternatives to pure lithium metal anodes. I will start with replacing lithium metal with sodium to realise Na-S batteries. I will study how lithiated MoS2 cathodes perform in Na-S batteries. Then I will investigate presodiation of 1T phase MoS2 electrodes to compare performance of lithiated vs sodiated electrodes. I will carry detailed characterisation of as-synthesized lithiated and sodiate MoS2, perform detailed electrochemical measurements, analyse data, and make scientific conclusions. Na-S batteries have not been widely studied and therefore provide opportunities for new breakthroughs.