Potassium-ion batteries (KIBs) have attracted intensive attention in recent years due to the resource-abundance and low cost of potassium. Here, for the first time, SnO 2 nanosheets grown on stainless steel mesh (SnO 2 /SSM) were used as a novel binder free anode for KIBs. A high capacity of 351mAhg−1 is achieved after 100cycles at current density of 50mAg−1. Even more, a high capacity of 128mAhg−1 can be obtained at 1000mAg−1 after 200cycles. These good electrochemical performances are mainly due to the large surface area of SnO 2 nanosheets and the roles of current collector and stable conductive skeleton SSM played.