Self-assembled Nanohybrid from Opposite Charged Sheets: Alternate Stacking of CoAl LDH and MoS_2

Hybrid materials are attracting intensive attention for their applications in electronics, photoelectronics, LEDs, field-effect transistors, etc. Engineering new hybrid materials and further exploiting their new functions will be significant for future science and technique development. In this work, alternatively stacked self-assembled CoAl LDH/MoS_2 nanohybrid has been successfully synthesized by an exfoliation-flocculation method from positively charged CoAl LDH nanosheets(CoAl-NS) with negatively charged MoS_2 nanosheets(MoS_2-NS). The CoAl LDH/MoS_2 hybrid material exhibits an enhanced catalytic performance for oxygen evolution reaction(OER) compared with original constituents of CoAl LDH nanosheets and MoS_2 nanosheets. The enhanced OER catalytic performance of CoAl LDH/MoS_2 is demonstrated to be due to the improved electron transfer, more exposed catalytic active sites, and accelerated oxygen evolution reaction kinetics.