利用简单的自组装法合成了二维PANI@MXene复合材料,其中MXene作为导电网络,提高了PANI的电导率,缩短了在PANI中的离子运输路径。这使得具有最佳质量比例的PANI_(0.5)@MXene展现出608 F g^(-1)的高比电容和良好的耐低温性能(-30℃时容量...利用简单的自组装法合成了二维PANI@MXene复合材料,其中MXene作为导电网络,提高了PANI的电导率,缩短了在PANI中的离子运输路径。这使得具有最佳质量比例的PANI_(0.5)@MXene展现出608 F g^(-1)的高比电容和良好的耐低温性能(-30℃时容量相对于室温时,保持率超过90%)。将PANI_(0.5)@MXene电极与过量的多孔MXene电极匹配,可构建具备1.3 V宽电压窗口的非对称赝电容超级电容器,以40 wt%硫酸为电解液,在20℃下容量可达32 mAh g^(-1)的容量,在-60℃下仍可保持室温下80%以上的容量。展开更多
Polyaniline(PANI)was effectively immobilized on the surface of ordered mesoporous carbon(OMC)by using Mn_2O_3 as sacrificial template.The observed microstructure and morphology indicate that a thin layer of PANI was c...Polyaniline(PANI)was effectively immobilized on the surface of ordered mesoporous carbon(OMC)by using Mn_2O_3 as sacrificial template.The observed microstructure and morphology indicate that a thin layer of PANI was coated on OMC uniformly.As a supercapacitor electrode material,the discharge capacity of the optimized PANI/OMC could reach 467 F/g,which is far higher than that of OMC,PANI and Mn_2O_3/OMC.Furthermore,PANI/OMC composites with different content of PANI are obtained by adjusting the amount of Mn_2O_3 on OMC and their properties are characterized.The results show that a thin layer of PANI can improve the capacity of PANI/OMC composites effectively and the further increase of PANI reduces the capacity of PANI/OMC composites.The sacrificial template method presented here is beneficial to coating a layer of polymer on carbon materials,and the content of polymer layer can be controlled by adjusting the amount of Mn_2O_3 in Mn_2O_3/OMC.展开更多
文摘利用简单的自组装法合成了二维PANI@MXene复合材料,其中MXene作为导电网络,提高了PANI的电导率,缩短了在PANI中的离子运输路径。这使得具有最佳质量比例的PANI_(0.5)@MXene展现出608 F g^(-1)的高比电容和良好的耐低温性能(-30℃时容量相对于室温时,保持率超过90%)。将PANI_(0.5)@MXene电极与过量的多孔MXene电极匹配,可构建具备1.3 V宽电压窗口的非对称赝电容超级电容器,以40 wt%硫酸为电解液,在20℃下容量可达32 mAh g^(-1)的容量,在-60℃下仍可保持室温下80%以上的容量。
基金financially supported by Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies,Institute for Clean Energy & Advanced Materials (Southwest University)the Natural Science Foundation of Chongqing (No.cstc2013jcyjA5004)+2 种基金the Fundamental Research Funds for the Central Universities (No.XDJK2013B031)Program for Excellent Talents in Chongqing(No.102060-20600218)the National Natural Science Foundation of China(No.21163021)
文摘Polyaniline(PANI)was effectively immobilized on the surface of ordered mesoporous carbon(OMC)by using Mn_2O_3 as sacrificial template.The observed microstructure and morphology indicate that a thin layer of PANI was coated on OMC uniformly.As a supercapacitor electrode material,the discharge capacity of the optimized PANI/OMC could reach 467 F/g,which is far higher than that of OMC,PANI and Mn_2O_3/OMC.Furthermore,PANI/OMC composites with different content of PANI are obtained by adjusting the amount of Mn_2O_3 on OMC and their properties are characterized.The results show that a thin layer of PANI can improve the capacity of PANI/OMC composites effectively and the further increase of PANI reduces the capacity of PANI/OMC composites.The sacrificial template method presented here is beneficial to coating a layer of polymer on carbon materials,and the content of polymer layer can be controlled by adjusting the amount of Mn_2O_3 in Mn_2O_3/OMC.
