Using structural phase transitions to enhance electrochemical properties without has received wide attention due to its large active area and excellent electron transport capacity. In this work, hollow C@SnS₂/SnS nanocomposites were successfully synthesized from hollow C@SnS₂ by controlling the temperature and time of the phase transitions. It is found that this hollow C@SnS₂/SnS nanocomposite can serve as electrocatalyst, showing excellent oxygen evolution reaction performance. The Sn (IV) heterostructure easily accepts electrons in water and plays a crucial role in the oxygen evolution reaction. Meanwhile, the low-valence Sn (II) can maintain a stable structure in the electrochemical reaction and thus exhibits good electrochemical performance with an overpotential of 380 mV, at the current density of 10 mA cm⁻², and a low Tafel slope of 63 mV dec⁻¹, which is far lower than that of pure SnS or SnS₂.

由于其大的活性面积和出色的电子传输能力，使用结构相变来增强电化学性能而没有引起广泛关注。在这项工作中，通过控制相变的温度和时间，成功地从中空C @ SnS ₂合成了中空C @ SnS ₂ / SnS纳米复合材料。发现该空心C @ SnS ₂/ SnS纳米复合材料可用作电催化剂，显示出优异的析氧反应性能。Sn（IV）异质结构易于接受水中的电子，并且在氧释放反应中起关键作用。同时，低价Sn（II）可以在电化学反应中保持稳定的结构，因此在电流密度为10 mA cm ^-2时具有380 mV的过电势和低的Tafel斜率表现出良好的电化学性能。 mV dec ^-1，其远低于纯SnS或SnS _2的mV dec ^-1。