Abstract
The charge/discharge capacity and cycle performance of lithium-ion batteries (LIBs) are studied in terms of the nanostructure of silicon-based anode materials and doping. The anode material is chosen to be either hydrogenated amorphous silicon (a-Si:H) or hydrogenated microcrystalline silicon (μc-Si:H), in which the doping is controlled between non-doped intrinsic i-type and phosphorous-doped n-type. The results show that a LIB test cell composed of a n-type a-Si:H anode yields a higher performance. The specific capacity during discharge is obtained initially at 2478 mAh/g, 1940 mAh/g after 10 cycles, and 1360 mAh/g after 40 cycles under a 0.2C condition.
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