采用水热法制备的Co0.85Se纳米片具有分级多孔结构，为了提高Co_0.85Se的电子导电率，引入rGO以构建三维网络并实现快速电子传输。通过空位传输和Co_0.85Se与rGO之间异质结构的协同效应，实现了出色的循环和倍率性能。采用第一原理方法确定Na+在CoSe和有缺陷Co_0.85Se中的扩散能垒，Co_0.85Se中梯度浓度的空位增强了钠储存动力学。

Hierarchical porous Co0.85Se@reduced graphene oxide ultrathin nanosheets with vacancy-enhanced kinetics as superior anodes for sodium-ion batteries[J],Nano Energy,2018.

DOI: 10.1016/j.nanoen.2018.09.010

https://www.sciencedirect.com/science/article/pii/S2211285518306542