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Recycled silicon powder coated on carbon paper used as the anode of lithium ion batteries
New Carbon Materials ( IF 5.7 ) Pub Date : 2019-07-11 , DOI: 10.1016/s1872-5805(19)60007-7
Shen Chin-Wei , Ko Tse-Hao , Chiu Kuo-Feng , Leu Hoang-Jyh , Liao Ting-Chia , Liu Ching-Han

High-capacity electrode materials are critical for portable electronic equipment that requires a high-energy density from lithium ion batteries (LIBs). Many different materials and fabrication methods for such electrodes have been developed for this purpose. Carbon paper coated with recycled silicon powder (CP-RSP) was prepared by coating silicon and pitch powder on the carbon paper, followed by stabilization at 250 °C in air and carbonization at 1000 °C in N2. The CP-RSP acted as both the current-collector and the active material for the anodes of LIBs. Electrodes with 2.5, 5, and 10 wt.% silicon exhibited capacity increases of 94, 129 and 41%, respectively, compared with the silicon-free electrode. The electrode for the CP-RSP with 5 wt. % silicon exhibited an optimal balance between discharge capacity and stability in long-cycle tests under various charging rates.



中文翻译:

涂在碳纸上的再生硅粉用作锂离子电池的负极

对于要求锂离子电池(LIB)具​​有高能量密度的便携式电子设备,高容量电极材料至关重要。为此目的,已经开发了许多用于这种电极的材料和制造方法。涂有再生硅粉(CP-RSP)的碳纸的制备方法是,在碳纸上涂布硅和沥青粉,然后在空气中于250°C稳定并在N 2中于1000°C碳化。。CP-RSP既充当LIB阳极的集电器,又充当活性材料。与无硅电极相比,含2.5%,5%和10%(重量)的硅的电极的容量分别增加了94%,129%和41%。CP-RSP用5 wt。在各种充电速率下的长周期测试中,%的硅表现出放电容量与稳定性之间的最佳平衡。

更新日期:2019-07-11
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