C‐Plasma of Hierarchical Graphene Survives SnS Bundles for Ultrastable and High Volumetric Na‐Ion Storage

Here, an elegant and versatile strategy is developed to significantly extend the lifespan and rate capability of tin sulfide nanobelt electrodes while maintaining high areal and volumetric capacities. In this strategy, in situ bundles of robust hierarchical graphene (hG) are grown uniformly on tin sulfide nanobelt networks through a rapid (5 min) carbon‐plasma method with sustainable oil as the carbon source and the partially reduced Sn as the catalyst. The nucleation of graphene, CN (with size N ranging from 1 to 24), on the Sn(111) surface is systematically explored using density functional theory calculations. It is demonstrated that this chemical‐bonded hG strategy is powerful in enhancing overall electrochemical performance.

本文提出一种优雅且多功能的策略，可显著延长硫化锡纳米带电极的寿命与倍率性能，同时保持其高面容量与体积容量。该策略中，以可持续油为碳源、部分还原的Sn为催化剂，通过快速（5分钟）碳等离子体法，在硫化锡纳米带网络上均匀原位生长出坚固的分级石墨烯（hG）束。通过密度泛函理论计算，系统探究了石墨烯及碳簇CN（尺寸N为1至24）在Sn(111)表面的成核过程。研究表明，这种化学键合的分级石墨烯（hG）策略能有效提升电极的整体电化学性能。