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Final published version
A novel three-dimensional porous graphene/MoS2 hybrid is synthesized through a facile spray-drying approach. This hybrid is constructed with two-dimensional N-doped graphene nanosheets wrapping one-dimensional nanotubes self-assembled by vertically oriented few-layered 1T-MoS2. Due to its well-designed nanoarchitecture, the hybrid owns several advantages: the metallic 1T-MoS2 and highly conductive graphene skeleton facilitates electron transfer; with abundant specific area and electrocatalytic active sites, the unique hollow nano-architecture enables efficient electrolyte infiltration and Li-ion transfer. The experiments of lithium polysulfides adsorption and in-situ Raman spectra confirm that the hybrid acts as both excellent chemical absorbant and high-efficiency electrocatalyst for the transition of long-chain lithium polysulfides. Benefiting from these merits, the cathode delivers outstanding electrochemical properties with a superior reversible capacity of 1219 mAh g−1 (after 200 cycles at 0.2 C), a low long-term cycling capacity decay of 0.039% per cycle (500 cycles at 1 C), and excellent rate performances.
Original language | English |
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Article number | 227364 |
Journal | Journal of Power Sources |
Volume | 447 |
Number of pages | 10 |
ISSN | 0378-7753 |
DOIs | |
Publication status | Published - 31 Jan 2020 |
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