General Synthesis of Sulfonate-Based Metal-Organic Framework Derived Composite of M S @N/S-Doped Carbon for High-Performance Lithium/Sodium Ion Batteries.

A general and simple strategy is realized for the first time for the preparation of metal sulfide (M S ) nanoparticles immobilized into N/S co-doped carbon (NSC) through a one-step pyrolysis method. The organic ligand 1,5-naphthalenedisulfonic acid in the metal-organic framework (MOF) precursor is used as a sulfur source, and metal ions are sulfurized in situ to form M S nanoparticles, resulting in the formation of M S /NSC (M=Fe, Co, Cu, Ni, Mn, Zn) composites. Benefiting from the M S nanoparticles and conductive carbon, a synergistic effect of the composite is achieved. For instance, the composite of Fe S /NSC as an anode displays excellent long-term cycling stability in lithium/sodium ion batteries. At 5 A g , large capacities of 645 mA h g and 426.6 mA h g can be retained after 1500 cycles for the lithium-ion battery and after 1000 cycles for the sodium-ion battery, respectively.