 Other approaches include making nanocomposites with Cu6Sn5 at its core with a nonreactive outer shell, SnO2-c hybrids have been shown to be effective, to accommodate volume changes and overall stability over cycles.The layered intermetallic materials derived from the Cu2Sb-type structure are attractive anode materials due to the open gallery space available and structural similarities to the discharge Li2CuSb product.First reported in 2001  In 2011, researchers reported a method to create porous three dimensional electrodes materials based on electrodeposited antimony onto copper foams followed by a low temperature annealing step.