采用不同煅烧温度(600℃、700℃和800℃)将废弃大麻杆在充满氮气的管式炉中进行回收碳化处理后得到3个硫掺杂的生物质多孔碳材料(C-600、C-700和C-800),并研究了碳化温度对其结构、元素组成及电化学储钠性能的影响。结果表明:3个样品均为硫掺杂的多空碳材料,其中C-600由于具有满意的无序程度和结构缺陷而表现出了最好的电化学储钠性能,即使在1A/g循环500圈仍能保持134mAh/g的可逆放电比容量,高于另外两种碳负极的储钠性能。
The waste hemp rods were recycled by carbonization at different temperatures of 600℃,700℃ and 800℃ for three sulfur-doped biomass porous carbon materials (C-600,C-700 and C-800).Furthermore,the effect of carbonization temperature on the structure,element composition and electrochemical performances was also studied.The results showed that three samples were biomass-based porous sulfur doped carbon,among which C-600 exhibited the best electrochemical Na-storage performance due to the desirable disorder degree and structure defects.For example,even cycling at 1 A/g for 500 cycles,the reversible discharge capacity remained about 134mAh/g,higher than those of other two carbon anodes.
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基金资助
云南省第十九批学术带头人资助项目(1097-10978240)
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