“…Mn 2 SnO 4 is insoluble and has abundant electroactive sites for entrapping electrons and accelerating chemical reactions, so it has been extensively studied in catalysis, energy storage (second-ary batteries, supercapacitors), electrochemical sensing, and so on. [18][19][20][21] However, the ECL response of Mn 2 SnO 4 has not been explored to date, although other metal stannates, such as Zn 2 SnO 4 22 and Ce 2 Sn 2 O 7 , 23 have been successfully employed in ECL immunosensors. Herein, we, for the first time, testify that Mn 2 SnO 4 nanocubes can emit robust cathodic ECL signals in the presence of potassium persulfate (K 2 S 2 O 8 ) coreactants.…”