A novel cobalt chloride hydrate modified Co-MOF derived carbon microspheres as anode materials for lithium ion batteries

In this work, the carbon-microsphere loaded with cobalt chloride hydrate ([email protected]) was prepared via a collaborative and chlorination strategy derived from ZIF-67 precursor, which exhibits a superior electrochemical performance as a lithium-ion battery anode material. The synthesized [email protected] obtained a high initial discharge capacity (947 mAh g−1) and the capacity attenuation rate is close to zero after 200 cycles at the current density of 100 mA g−1. The porous structure derived from ZIF-67 not only can provide a conductive path, which increases the transport of electrons and lithium ions, but also alleviate volume expansion. The presences of -Cl-/H2O groups provide active sites for the anchoring of Li+. As the first successful synthesizing the cobalt chloride hydrate (CCH) from ZIF-67, good electrochemical performance provides a promising for the large-scale application in lithium ion batteries.