High Energy Storage Performance of PZO/PTO Multilayers via Interface Engineering

Abstract

Antiferroelectric thin-film capacitors with ultralow remanent polarization and fast discharge speed have attracted extensive attention for energy storage applications. A multilayer heterostructure is considered to be an efficient approach to enhance the breakdown strength and improve the functionality. Here, we report a high-performance multilayer heterostructure (PbZrO3/PbTiO3) n with a maximum recoverable energy storage density of 36.4 J/cm3 due to its high electric breakdown strength (2.9 MV/cm) through the heterostructure strategy. The positive effect of interfacial blockage and the negative effect of local strain defects competitively affect the breakdown strength, showing an inflection point at n = 3. The atomic-scale characterizations reveal the underlying microstructure mechanism of the interplay between the heterointerface dislocations and the decreased energy storage performance. This work offers the potential of well-designed multilayers with high energy storage performance through heterostructure engineering.

Partitioning polar-slush strategy in relaxors leads to large energy-storage capability

“…The geometric phase analysis mapping (Fig. 3F) confirms the existence of considerable dislocation cores, featured by pronounced shear stress (e xy ) concentration (33), in comparison with the lesser strain fluctuation observed in the BMT-ST film at the same scale (fig. S16, B and C).…”

NiCo‐LDH Hollow Nanocage Oxygen Evolution Reaction Promotes Luminol Electrochemiluminescence

“…The lattice spacing of 0.216 nm corresponds to the (012) crystal surface of the NiCo‐LDH, indicating its good crystallinity. [ 35 ] The NiCo‐LDH sample was analyzed using energy‐dispersive X‐ray spectroscopy (EDS) (Figure S3, Supporting Information). The analysis confirmed the presence of Ni, Co, and O in the sample.…”

High Thermopower of Agarose‐Based Ionic Thermoelectric Gel Through Micellization Effect Decoupling the Cation/Anion Thermodiffusion

“…Cho et al [18] reported a highest negative thermopower of −25 mV K −1 thus far in the poly(2acrylamido-2-methyl-1-propanesulfonic acid) (PAMPS) composite of PEDOT with bisulfate thermodiffusion. Chen et al [19] also achieved a giant negative thermopower of −28.4 mV K −1 through synergistic ion-polymer coordination and Coulomb interactions in the PVA-chitosan aerogel with a polycation electrolyte [poly(diallyldimethylammonium chloride)]/CuCl 2 .…”