Ternary tin selenium sulfide (SnSe0.5S0.5) nano alloy as the high-performance anode for lithium-ion and sodium-ion batteries

A new anode material for Li-ion and Na-ion batteries is synthesized via a facile polyol-method and hydrothermal process. It consists of SnSe0.5S0.5 nano alloy encapsulated in carbon bulk and surrounded by carbon spheres. A high specific capacity and excellent cycling stability are achieved (625 mA h g−1 for LIB at 500 mA g−1 rate after 1000 discharge/charge cycles, and 430 mA h g−1 in a SIB at 200 mA g−1 rate after 100 cycles).271