Synergistic Effect of Co and Mn Co-Doping on SnO2 Lithium-Ion Anodes

The incorporation of transition metals (TMs) such as Co, Fe, and Mn into SnO2 substantially improves the reversibility conversion alloying reaction when used a negative electrode active material in lithium-ion batteries. Moreover, it was shown that specific benefits different TM dopants can be combined introducing more than one dopant lattice. Herein, careful characterization Co co-doped via transmission electron microscopy coupled with energy-dispersive X-ray spectroscopy diffraction including Rietveld refinement is reported. Based on this in-depth investigation crystal structure distribution two within lattice, an ex situ photoelectron absorption were performed to better understand de-/lithiation mechanism synergistic impact co-doping. results specifically suggest antithetical redox behaviour might play decisive role for enhanced reaction.