Znanstvenikom iz Georgia Institute of Technology je uspelo še nekaj več: izdelali so t.i. hibridni element, ki hkrati vsebuje piezoelektrik, ki generira naboj in posebno membrano, ki omogoča prehod litijevih ionov le v eno smer in s tem deluje kot elektrokemijski akumulator, ki pretvarja mehansko energijo v elektrokemijsko. S tem so dve napravi združili v eni kar omogoča mnogo bolj učinkovito zbiranje in hranjenje energije.
The power cell consists of a cathode made from lithium-cobalt oxide (LiCoO2) and an anode consisting of titanium dioxide (TiO2) nanotubes grown atop a titanium film. The two electrodes are separated by a membrane made from poly(vinylidene fluoride) (PVDF) film, which generates a piezoelectric charge when placed under strain. When the power cell is mechanically compressed, the PVDF film generates a piezoelectric potential that serves as a charge pump to drive the lithium ions from the cathode side to the anode side. The energy is then stored in the anode as lithium-titanium oxide.
Vir: Researchers Develop a Self-Charging Power Cell | SciTech Daily