Graphene-Supported Mesoporous SnO2 Nanosheets as High-Performance Anode Materials for Lithium-Ion Batteries

Abstract

A novel approach to fabricate sandwich-like graphene-supported mesoporous SnO2 nanosheets (G-SnO2) as anode materials for lithium-ion batteries (LIBs) was developed. The obtained sandwich-like G-SnO2 inherit the typical two-dimensional structure of graphene and possess a high specific surface area (64[Formula: see text]m2g[Formula: see text]), nanosized SnO2 particles (about 3[Formula: see text]nm in diameter), mesoporous structure (a pore size of mainly [Formula: see text]3.8[Formula: see text]nm), large aspect ratio and enhanced electrical conductivity. As a consequence, the G-SnO2 anode significantly improved the LIBs capacity and cycle performance (536[Formula: see text]mAh[Formula: see text]g[Formula: see text] at 500[Formula: see text]mA[Formula: see text]g[Formula: see text] even after 500 cycles).