A book-like organic based electrode with high areal capacity for high performance flexible lithium/sodium-ion batteries.

By directly bonding the monolayer organic based electrodes together to assemble the book-like multilayer electrode, increased areal capacity and high flexibility can be achieved. The electrodes represent 5.88 mA h cm -2 at 0.7C and 5.24 mA h cm -2 at 0.2C areal capacity in lithium-ion and sodium-ion batteries, respectively.