Self-charging batteries

Scientists are developing new self-charging batteries that harvest energy from light and could put an end to our smartphone recharging woes.

Lithium-ion batteries have allowed the rapid proliferation of mobile devices such as phones, tablets and computers. These tools, however, require frequent re-charging because of the limited energy density of their batteries.

Light sensitisation

Researchers are working on a single device capable of harvesting and storing energy using light. The study shows that a standard cathode from a lithium-ion battery can be “sensitised” to light by incorporating photo-harvesting dye molecules.


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