Time-dependent evolution of the dichloromethane-mediated Bi2MoO6/BiOCl heterojunction for enhanced electrochemical performance

In this work, we presented a one-pot hydrothermal approach to produce Bi2MoO6/BiOCl heterojunction in the presence of dichloromethane (CH2Cl2) as the source of chloridion (Cl-) through alcoholysis. The gradual production of Cl- can elaborately manipulate the composites' morphology leading to the time-controlled assembly of BiOCl nanosheets onto Bi2MoO6 surface; a pronounced Bi2MoO6/BiOCl heterojunction was observed with prolonged reaction time. The Bi2MoO6/BiOCl composites obtained at 6 h exhibited the highest specific capacitance of 651 F g(-1) at 1 A g(-1), meanwhile, the specific capacitance could be retained at 85% after 5000 cycles at a current of 4 A g(-1), rendering this Bi2MoO6/BiOCl heterojunction as a promising electrode material for supercapacitors.