Highly conductive three-dimensional graphene for enhancing the rate performance of LiFePO4 cathode

In this paper, three-dimensional (3D) graphene network was prepared by chemical vapor deposition (CVD) on 3D porous Ni template. The as-prepared 3D graphene showed high conductivity of ∼600 S cm−1 and low square resistance of 1.6 Ω sq−1. With the aid of 3D graphene network, the poorly conductive LiFePO4 exhibited high conductivity and good rate performance of 109 mA h g−1 at 10 C, indicating potential application in high rate lithium ion batteries.

► We prepare three-dimensional (3D) graphene network.
► The 3D graphene has high conductivity.
► We fabricate the 3D graphene/LiFePO4 composite.
► The 3D graphene/LiFePO4 shows enhancing conductivity and good high rate performance.