Improved Li storage capacity of 2D MoS2 upon chlorophyll derivative composition

The layered MoS2 is an attractive anode material for lithium-ion batteries (LIBs), which facilitates the deintercalation of lithium ions and possesses a relatively high theoretical capacity. Herein, we report a strategy of the organic/inorganic composite anode with widened interlayer distance, where zinc methyl 3-devinyl-3-hydroxymethyl-pyropheophorbide a (Chl) molecules self-aggregate among layered MoS2 or on its surface. The as-prepared electrodes exhibit better rate performance, higher reversible capacity, and higher retention and improve specific capacity at high current densities and faster Li+ diffusivity than pure MoS2. This work provides a potential idea for optimizing the energy storage performance of 2D MoS2 material by enlarging the interlayer space with some organic dye aggregates.