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USA: Triazine boosts polymer energy storage

A team of scientists from Germany and Japan have presented a new principle for storing energy in lithium ion batteries using a porous polymer framework. This could give these new batteries double the energy storage of conventional lithium ion batteries.
The lithium ion battery was a landmark event in technology. The lightest of all metals, lithium batteries have made all manner of electronic devices compact and portable, ushering in the era of miniaturised mobile technology. But their use beyond these applications has been limited as they struggle to match the power output of the combustion engine, for example. Also, the transition metals they commonly use are becoming more scarce and expensive.

Ken Sakaushi at the Dresden University of Technology and co-workers aim to solve both of these issues with their demonstration of a novel energy storage principle for a cathode based on a porous organic polymer framework material.

In a traditional lithium battery, Sakaushi explains, electrons are transferred from the anode to the cathode by reducing a positive charge (p-doping) or creating a negative one (n-doping) within the cathode, with the corresponding movement of either anions or cations, respectively. ‘Our idea is to combine these into one process,’ he reveals. ‘It uses both anions and cations to transfer electrons during discharge.’


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