三维多孔氮化钛用于高效限硫载体

通过简便、高效、可规模化的一步高温氮化法，利用高温烧结使二氧化钛(TiO₂)粉末在转化成氮化钛(TiN)的同时形成连续的三维多孔网络，具有良好的导电性和高孔隙率。作为高效限硫载体，连续的三维多孔TiN网络不仅能有效增加电子传输路径、增强电子转移、促进离子迁移，而且能够从物理限域和化学吸附两方面对多硫化锂的穿梭效应进行强有力的限制，同时有效提高了硫的负载量。制备的高导电性、高硫负载硫正极展现出较高的放电容量和优异的循环稳定性能。

Three-dimensional porous titanium nitride as a highly efficient sulfur host

A simple, efficient, and scalable one-step high-temperature nitriding method was used to convert titanium dioxide into titanium nitride, meanwhile, the continuous three-dimensional porous network with good electrical conductivity and high porosity was formed under high-temperature sintering. As a highly efficient sulfur host, the continuous three-dimensional porous titanium nitride network not only effectively increases the electron transport path, enhances the electron transfer, and promotes the ion migration, but also strongly restricts the shuttle effect of lithium polysulfides from both physical limiting and chemisorption, and effectively increases the sulfur loading. The as-prepared sulfur cathode with high conductivity, high catalytic activity, and high sulfur loading shows high discharge capacity and excellent cyclic stability.