Synchronous synthesis of a Si/Cu/C ternary nano-composite as an anode for Li ion batteries

Commercial micron-sized bulk Si is chemically converted into a nano-sized Si/Cu/C ternary composite. The Si particles, Cu crystals, and amorphous carbon are generated synchronously and mixed uniformly. As an anode, the Si/Cu/C exhibits a capacity of 1560 mA h g(-1) after 80 cycles at 0.5 mA g(-1), long-term cycling stability with a capacity of 757 mA h g(-1) at 2 A g(-1) after 600 cycles, and fine rate capability.