Binding MoSe2 with carbon constrained in carbonous nanosphere towards high-capacity and ultrafast Li/Na-ion storage

Utilized the dual effect of polyvinyl pyrrolidone (PVP), the exfoliated and encapsulated MoSe2 inside carbon nanospheres with C-O-Mo bonds and large layer distance (0.89 nm) was constructed to capture in-situ generated Se to impart improvement on electrochemical properties.414