Nobel Prize–winning technique illuminates the fibers that set off battery fires
Cryo-electron microscopy shows that dendrite filaments are long, thin crystals
![lithium dendrite crystals](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2017/10/102617_MT_battery-dendrites_main.jpg?fit=860%2C460&ssl=1)
SAY FREEZE Scientists used an imaging technique called cryo-electron microscopy to snap the first close-ups of lithium dendrites, revealing them as long, needlelike crystals.
Y. Li et al/Science 2017