Flexible, organic power

A nitroxide polymer coating can be "printed" on to a flexible substrate to make an electrode for organic rechargeable batteries has been developed by Hiroyuki Nishide and colleagues at the Waseda University in Tokyo, Japan. The flexible electrode could facilitate the development of flexible, ubiquitous and wearable electronic devices. Click chemistry involving Michael polyadditions allowed them team to form a cross-linked polymer network bearing nitroxide radicals with no side reactions. The resulting geometrically homogenous 3D network can stick readily to any type of current collector substrate used in battery technology while the dense population of nitroxide radicals allows rapid, high capacity, reversible storage of charge.