Synthesis and electrochemical performance of porous FeCo2S4 nanorods as an electrode material for supercapacitor

•FeCo2S4 nanorods growing on Ni foam were prepared, the nanorods structure enhanced the electrochemical performance.•The FeCo2S4 nanorods revealed a high specific capacitance of 4035 F g−1.•The symmetric device gives the highest specific energy of 37.72 Wh g−1 and capacitance retention of 80.4% after 5000 charge/discharge cycles.