Energy storage boost for ORBs

With the aim of eventually powering small electronic devices and diverting toxic waste from landfill, researchers at Flinders University, Australia along with Chinese collaborators have used a catalysis strategy to produce two-electron storage in organic radical batteries (ORBs), which they believe is ‘a big advance in improving their storage capability’.

The rechargeable ORBs can be made from sustainable organic compounds to reduce reliance on lithium and cobalt, both of which are not widely recycled in modern batteries.

The uptake of ORBs in electronics and other small device markets has so far been limited because of their lower capacity than commercialised lithium-ion batteries.

Previous research has found only one electron can be reversibly stored in the materials, which provides the battery with a maximum capacity of 110mAh/g.

“Catalysis has been widely used in lithium-based batteries such as lithium-oxygen batteries and lithium-sulphur batteries to improve their energy and power performance,” said senior lecturer in chemistry Dr Zhongfan Jia, a research leader at Flinders University’s Institute for Nanoscale Science and Technology.