【作者】 王婕； 申来法； 丁兵； 聂平； 贠晓亮； 张校刚；

【Author】 Jie Wang,Laifa Shen,Bing Ding,Ping Nie,Xiaoliang Yun and Xiaogang Zhang~* College of Material Science and Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing,210016,P.R.China

【机构】 南京航空航天大学材料与技术学院；

【摘要】 本文采用鱼鳞为原料,通过高温炭化制备了氮/磷共掺杂的活性碳材料。鱼鳞作为废弃生物质,不仅能够作为低成本的碳源,其丰富的蛋白质和卵磷脂成分更为最终产物提供了氮、磷等杂原子。用不同比例的KOH对其进行进一步活化后,可得到不同孔径分布的活性炭（Scale-AC）材料。杂原子的存在不仅提供了氧化还原赝电容,另外杂原子掺杂也有利于抑制了碳材料表面部分含氧官能团在充放电过程中发生的不可逆变化。在6M KOH电解液中,Scale-AC表现出优异的电化学性能,其比容量可达到223 F·g^-1,并且具有良好的倍率性能以及循环稳定性。更多还原

【Abstract】 Fish scale-derived phosphorus- and nitrogen-co-doped activated carbon was prepared through simple heat-treatment and chemical activation.The lecithin and protein contained in the fish scale provide abundant phosphorus and nitrogen precursors during the preparation process.Furthermore,the subsequent chemical activation of with potassium hydroxide significantly improves the porosity and specific surface area.During the charge/discharge process,the phosphorus and nitrogen containing functional groups could contribute pseudocapacitance,effectively prevent the irreversible electrochemical reaction of oxygen containing functional group as well.The as-prepared activated carbon electrode exhibits a high specific capacitance(223 F g^-1) with significantly enhanced cycling performance and an excellent rate capability.更多还原