Perovskites have been significantly considered as promising materials for electrochemical energy storage in the recent years. Co doping of Mn and Nd with hydrothermally synthesized LaFeO₃ (LF) perovskite resulted in La_0.8Nd_0.2Fe_0.8Mn_0.2O₃ (LNFM) with significantly higher specific capacitance of 158 F/g at 50 mV/s compared to non-doped and single doped LF samples. Subsequently, LNFM/nitrogen-doped graphene oxide (NGO) nanocomposite was prepared and investigated. It was found out that the introducing of NGO substantially enhances the specific capacitance of the nanocomposite up to 1060 F/g at 50 mV/s. Besides, the composite revealed outstanding capacity retention as 92.4% capacity retained after 10000 continuous cycle (85.37% for the LNFM sample). In overall, the electrochemical behavior of the composite with 1:1 ratio of LNFM/NGO confirms its high potential as supercapacitor for energy storage applications.

近年来，钙钛矿已被广泛认为是用于电化学能量存储的有前途的材料。Mn和Nd与水热合成的LaFeO ₃（LF）钙钛矿共掺杂产生La _0.8 Nd _0.2 Fe _0.8 Mn _0.2 O ₃（LNFM）在50 mV / s时具有比158 F / g高得多的比电容，与未掺杂和单掺杂LF样品相比。随后，制备并研究了LNFM /氮掺杂氧化石墨烯（NGO）纳米复合材料。已经发现，引入NGO可以在50mV / s下将纳米复合材料的比电容显着提高至1060F / g。此外，该复合材料显示出出色的容量保持能力，因为在10000个连续循环后保留了92.4％的容量（LNFM样品为85.37％）。总体而言，LNFM / NGO比例为1：1的复合材料的电化学行为证实了其作为储能应用超级电容器的巨大潜力。