论文标题
由于在立方 - 甲状腺外相变期间的配位数和硫空位增加，五角石的氢进化催化增强
Enhanced Hydrogen Evolution Catalysis of Pentlandite due to the Increases in Coordination Number and Sulfur Vacancy during Cubic-Hexagonal Phase Transition
论文作者
论文摘要
寻找新阶段是材料科学的重要方向。硫化物的相变导致催化性能的显着变化，例如MOS2和WS2。立方五角石[CPN，（Fe，Ni）9S8]可以是电池，太阳能电池和催化场中的功能材料。但是，尚无关于五角石其他阶段的物质特性的报告。在这项研究中，首次确定了五角石，硫化硫酸含硫化的六边形五角石（HPN）的新阶段的单位细胞参数，并首次确定了CPN和HPN之间的相边界。与CPN相比，HPN显示出较高的配位数，更多的硫空位和高电导率，这会导致HPN的氢进化性能明显高于CPN，并使非Nano Rock催化剂HPN高于其他最知名的纳米硫化物催化剂。相过渡期间硫空缺的增加为设计功能材料提供了新的方法。
The search for new phases is an important direction in materials science. The phase transition of sulfides results in significant changes in catalytic performance, such as MoS2 and WS2. Cubic pentlandite [cPn, (Fe, Ni)9S8] can be a functional material in batteries, solar cells, and catalytic fields. However, no report about the material properties of other phases of pentlandite exists. In this study, the unit-cell parameters of a new phase of pentlandite, sulfur-vacancy enriched hexagonal pentlandite (hPn), and the phase boundary between cPn and hPn were determined for the first time. Compared to cPn, the hPn shows a high coordination number, more sulfur vacancies, and high conductivity, which result in significantly higher hydrogen evolution performance of hPn than that of cPn and make the non-nano rock catalyst hPn superior to other most known nanosulfide catalysts. The increase of sulfur vacancies during phase transition provides a new approach to designing functional materials.
