Template-driven synthesis of tin selenide nanosheets and their composites for supercapacitor applications

[Me 2 Sn(SeC 4 H 3 N 2 ) 2 ] derived SnSe, SnSe 2 NSs and tin selenide/g-C 3 N 4 composites were used for supercapacitor application having a specific capacitance of 140 F g −1 at 1 A g −1 with 85% capacitance retention after 5000 cycles with excellent cyclability.