▎ 摘　　要

NOVELTY - Lithium-ion battery has graphene-coated silicon nanowire anode, exhibiting improved specific capacity and cycling stability. USE - Lithium-ion battery used in electronic device, electric vehicle, and renewable energy storage system (all claimed). ADVANTAGE - The lithium-ion battery has improved specific capacity and cycling stability, reduced weight, improved electrochemical performance, longer battery life and faster charging times, and has safety, and cost-effective. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: 1.a method for preparing a graphene-coated silicon nanowire anode, which involves: synthesizing silicon nanowires and coating them with a layer of graphene using a chemical vapor deposition technique; 2. an electronic device, which comprises: a lithium-ion battery with a graphene-coated silicon nanowire anode, resulting in longer battery life and faster charging times; 3. an electric vehicle, which comprises: a lithium-ion battery with a graphene-coated silicon nanowire anode, resulting in longer driving range and reduced battery weight; 4. a renewable energy storage system, which comprises: a lithium-ion battery with a graphene coated silicon nanowire anode, providing high energy density and improved cycling stability; 5. a method for improving the electrochemical performance of a lithium-ion battery, which involves: replacing the traditional graphite-based anode with a graphene-coated silicon nanowire anode; 6. a lithium-ion battery anode, which comprises: a silicon nanowire structure coated with a layer of graphene, exhibiting improved specific capacity and cycling stability; 7. a method for increasing the specific capacity of a lithium-ion battery, which involves: using a graphene-coated silicon nanowire anode; and 8. a method for reducing the weight and improving the efficiency of a lithium-ion battery in an electric vehicle or renewable energy storage system, which involves: using a graphene-coated silicon nanowire anode.