Synthesis of Metal–Organic Sulfides as Anode Materials for Lithium‐Ion Batteries at Room Temperature

To relieve the volume effect of metal‐based anode materials for lithium‐ion batteries the size of the active material is reduced to a limit, and organic frameworks are used to provide cushioning for volume expansion. Tin‐based sulfide is designed by 1,3,5‐triazine‐2,4,6‐trithiol trisodium (TMT), and tin dichloride is synthesized at room temperature. TMT like the “solvent” of metal ions has a good electrical conductivity, which makes metal ions disperse in the organic conductive skeleton at the atomic level. A carbon nanotube is introduced to enhance the conductivity among the active particles, and the tin‐based materials deliver a high specific capacity of 713 mAh g −1 at a current density of 500 mA g −1 after 500 cycles. In addition, using Ni 2+ , Co 2+ , or Mn 2+ instead of Sn 2+ , the conversion type of the metal‐based anode materials are prepared by the same method, and they also exhibit excellent electrochemical properties.