Flexible Self-Charging Power Cell for One-Step Energy Conversion and Storage
نویسندگان
چکیده
DOI: 10.1002/aenm.201301329 Energy conversion and storage, [ 1–3 ] as the two most important technologies for energy, are usually two distinct processes that are performed by using two different and separated physical units, such as a piezoelectric nanogenerator and lithium-ion battery. [ 4–9 ] Recently, we presented a novel fundamental mechanism that directly hybridizes the two processes into one, through which mechanical energy is directly converted into and simultaneously stored as electrochemical energy. [ 10 ] When the traditional separator fi lm of a lithium-ion battery is replaced with a piezoelectric fi lm, the internal piezoelectric potential created by mechanical strain can drive lithium ions to migrate toward the anode. Based on this new piezoelectric-potentialdriven electrochemical (piezo-electrochemical) approach, a self-charging power cell (SCPC) has been fabricated for directly converting mechanical energy into electrochemical energy. [ 10 ]
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