Battery electrode made from highly porous tin foam overcomes degradation due to mechanical stress during charging/ discharging

https://www.eurekalert.org/news-releases/1074689

"tin is abundant, does not expand when lithium is absorbed, capacity per kg almost 3X higher than graphite... tin foam with countless micrometre-sized pores... although tin foam is more expensive than conventional tin foil, it offers a cheaper alternative to expensive nanostructuring, while being able to store significantly more lithium ions, thus enabling an increase in capacity"