▎ 摘　　要

This study examines the effects of a graphene nanosheet (GNS) conductive additive on the performance of a highly packed (2.5 g cm(-3)) lithium-ion battery cathode containing 92 wt% Li-1.1(Mn0.6Ni0.4)(0.9)O-2 microspheres (approximately 6 mu m in diameter). GNSs, approximately 2.0 nm thick and 0.5-1.0 mu m in width, are introduced into an electrode slurry in the form of a dispersion in N-Methyl-2-pyrrolidone. They are substantially smaller than the oxide particles; therefore, their presence exerts no adverse influence on the packing density of the electrode. A small quantity of the GNS additive (