posted on 2018-02-09, 00:00authored byShahab Ahmad, Chandramohan George, David J. Beesley, Jeremy J. Baumberg, Michael De Volder
Emerging
autonomous electronic devices require increasingly compact
energy generation and storage solutions. Merging these two functionalities
in a single device would significantly increase their volumetric performance,
however this is challenging due to material and manufacturing incompatibilities
between energy harvesting and storage materials. Here we demonstrate
that organic–inorganic hybrid perovskites can both generate
and store energy in a rechargeable device termed a photobattery. This
photobattery relies on highly photoactive two-dimensional lead halide
perovskites to simultaneously achieve photocharging and Li-ion storage.
Integrating these functionalities provides simple autonomous power
solutions while retaining capacities of up to 100 mAh/g and efficiencies
similar to electrodes using a mixture of batteries and solar materials.