Research / 2020 / Article / Fig 4

Research Article

Selective Adsorption and Electrocatalysis of Polysulfides through Hexatomic Nickel Clusters Embedded in N-Doped Graphene toward High-Performance Li-S Batteries

Figure 4

Electrochemical performances with high areal loading of sulfur. (a) Cycling performances and Coulombic efficiencies of S@Ni-N/G and control cathodes under 0.2 C. (b) CV curves over a voltage range of 1.7-2.8 V with sweep rate of 0.2 mV s-1. (c) Cycling performance of S@Ni-N/G with different areal loading of sulfur at 0.1 C. (d) Areal capacity of the S@Ni-N/G cathode with sulfur loading of 6.8 mg cm-2 at 0.1 C compared with that of other currently reported sulfur host materials with catalytic properties in the literature.