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Tungsten disulfide (WS2) has been recognized as a promising anode material for rechargeable potassium-ion batteries (PIBs).However,its K-ion intercalation capacity is limited to ～60 mAh·g-1.Here,we report a WS2-graphene composite anode which is fabricated through simple filtration of liquid-phase exfoliated WS2 and graphene nanosheet delivers a significantly improved specific capacity of 137 mAh·g-1 at a current density of 10 mA·g-1.The composite anodes also exhibit remarkable rate capability and long-term cyclability over 500 cycles.These results highlight the WS2-graphene composite structure as a promising anode material for long lifespan rechargeable potassium-ion batteries.