CAJ | 학술논문

以稻壳为原料，采用镁热还原方法制备孔隙和孔壁主要为纳米尺度的多孔硅材料．作为锂离子电池负极材料，在30 mA／g恒流充放下，多孔硅具有首次充电容量为2387 mAh／g，50次充放循环后，充电容量保持率为23．3％．考虑到稻壳的资源丰富、廉价易得和可持续利用特点，镁热还原工艺的低成本性以及稻壳制备的多孔硅具有较好的电化学性能，此法有望制备实用的优质锂离子电池多孔硅负极材料．
이도각위원료，채용미열환원방법제비공극화공벽주요위납미척도적다공규재료．작위리리자전지부겁재료，재30 mA／g항류충방하，다공규구유수차충전용량위2387 mAh／g，50차충방순배후，충전용량보지솔위23．3％．고필도도각적자원봉부、렴개역득화가지속이용특점，미열환원공예적저성본성이급도각제비적다공규구유교호적전화학성능，차법유망제비실용적우질리리자전지다공규부겁재료．
Porous silicon with mainly nano-sized wall thickness and pore size is synthesized by magnesiothermic reduction method,using rice husk as the raw material.As an anode material,at the constant charge-discharge current of 30 mA/g,the prepared porous silicon has a charge capacity of 2 387 mAh/g,after 50 cycles,it has a charge-capacity retention of 23.3 %.Considering the resourceful,cheap and sustainable characteristics of rice husk,the low-cost of the magnesiothermic reduction process and the high performance of the prepared por-ous silicon,porous silicon anode material thus obtained may be practical in the future.