Abstract
AbstractWS2 nanosheets–carbon composites (WS2/C) were synthesized through a simple two‐step process including ball‐milling and sulfidation. When applied as anode materials for sodium‐ion batteries and lithium‐ion batteries, WS2/C composites deliver a high reversible sodium storage capacity of 270 mA h g−1 at 100 mA g−1 and a high reversible lithium storage capacity of 322 mA h g−1 at 200 mA g−1 after 100 cycles. The improved electrochemical performance of WS2/C compared with the bare WS2 can be attributed to the synergic effects between WS2 and Super P carbon black matrix, which can offer a beneficial conductivity environment for electron transfer and accommodate stress from the volume change during cycling.
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