Indium nitride (InN) nanowires grown on Au-decorated carbon fibers (InN/Au-CFs) are proposed as a high-performance anode material for lithium-ion batteries (LIBs). InN has a low redox potential (<0.7 V vs Li/Li⁺), a narrow bandgap (0.69 eV), and a high theoretical specific capacity (>1200 mAh g⁻¹), making it a promising candidate for high-energy-density LIBs. The InN/Au-CFs composite exhibits excellent structural stability, fast Li⁺ kinetics, and high-rate performance. The InN nanowires are grown via chemical vapor deposition on Au-decorated carbon fibers, resulting in a high aspect ratio of 400, which shortens Li-ion diffusion paths and enhances structural stability. The InN/Au-CFs anode delivers a capacity of 632.5 mAh g⁻¹ at 0.1 A g⁻¹ after 450 cycles and 416 mAh g⁻¹ at 30 A g⁻¹, demonstrating superior cycling stability and high-rate capability. The InN/Au-CFs anode also shows excellent electrochemical performance, with a high specific capacity and stable cycle performance. The InN/Au-CFs anode exhibits a wide voltage window and favorable Li-storage properties, making it suitable for high-energy-density and high-power-density LIBs. The InN/Au-CFs anode is composed of InN nanowires grown on Au-decorated carbon fibers, which provide stable growth sites and enhance electronic transport. The InN/Au-CFs anode shows excellent electrochemical performance, with a high specific capacity and stable cycle performance. The InN/Au-CFs anode is a promising candidate for high-performance LIBs due to its high capacity, wide voltage window, and excellent rate capability. The InN/Au-CFs anode is a promising candidate for high-performance LIBs due to its high capacity, wide voltage window, and excellent rate capability.Indium nitride (InN) nanowires grown on Au-decorated carbon fibers (InN/Au-CFs) are proposed as a high-performance anode material for lithium-ion batteries (LIBs). InN has a low redox potential (<0.7 V vs Li/Li⁺), a narrow bandgap (0.69 eV), and a high theoretical specific capacity (>1200 mAh g⁻¹), making it a promising candidate for high-energy-density LIBs. The InN/Au-CFs composite exhibits excellent structural stability, fast Li⁺ kinetics, and high-rate performance. The InN nanowires are grown via chemical vapor deposition on Au-decorated carbon fibers, resulting in a high aspect ratio of 400, which shortens Li-ion diffusion paths and enhances structural stability. The InN/Au-CFs anode delivers a capacity of 632.5 mAh g⁻¹ at 0.1 A g⁻¹ after 450 cycles and 416 mAh g⁻¹ at 30 A g⁻¹, demonstrating superior cycling stability and high-rate capability. The InN/Au-CFs anode also shows excellent electrochemical performance, with a high specific capacity and stable cycle performance. The InN/Au-CFs anode exhibits a wide voltage window and favorable Li-storage properties, making it suitable for high-energy-density and high-power-density LIBs. The InN/Au-CFs anode is composed of InN nanowires grown on Au-decorated carbon fibers, which provide stable growth sites and enhance electronic transport. The InN/Au-CFs anode shows excellent electrochemical performance, with a high specific capacity and stable cycle performance. The InN/Au-CFs anode is a promising candidate for high-performance LIBs due to its high capacity, wide voltage window, and excellent rate capability. The InN/Au-CFs anode is a promising candidate for high-performance LIBs due to its high capacity, wide voltage window, and excellent rate capability.