新しい炭素前駆体：２Ｄナノ材料を用いた２Ｄ／３Ｄ　ＭＯＦｓの合成

在本项目中，我们致力于制备用于电化学电容、电化学催化和充电电池的高性能碳基电极材料。我们合理地设计了具有可控2D/3D形貌、掺杂杂原子和封装的功能纳米片的MOF衍生碳基材料，这些从合成化学和实际电化学应用的角度来看都是非常重要和令人感兴趣的。采用双相电纺法制备了含ZIF的杂化聚合物纤维。然后通过多步退火处理将其转化为纳米Co3O4修饰的多孔氮掺杂碳纤维(ZIF-Co3O4/NCF)。合成的ZIF-Co3O4/NCF交织成自支撑膜，可作为双功能催化剂在水溶液和非水电解液中催化氧还原。电化学测试表明，ZIF-Co3O4/NCF具有较高的氧还原催化活性，其半波电位(E_(1/2))为0.813&8197；V(vs.RHE)，在碱性介质中几乎为有利的四电子还原途径。

In this project, we have devoted to fabricating high-performance carbon-based electrode materials for electrochemical capacitance, electrochemical catalysis, and rechargeable batteries. We rationally designed MOF-derived carbon-based materials with controlled 2D/3D morphologies, doped heteroatoms, and encapsulated functional nanosheets, which were quite important and of great interest from the viewpoint of synthetic chemistry and practical electrochemical applications. ZIF-incorporated hybrid polymeric fibres were fabricated by using a dual‐phase electrospinning method. These were then transformed into Co3O4‐nanoparticle‐decorated porous N‐doped carbon fibres (ZIF‐Co3O4/NCF) through multi‐step annealing treatment. The resultant ZIF‐Co3O4/NCF was interweaved into a self‐supported film and could be used as a bi‐functional catalyst for catalysing oxygen reduction in both aqueous and non‐aqueous electrolytes. Electrochemical tests demonstrate that ZIF‐Co3O4/NCF displayed a high catalytic activity for oxygen reduction with a half‐wave potential (E1/2) of 0.813 V (vs. RHE) and an almost favourable four‐electron reduction pathway in alkaline medium.