Defect engineering induces ultra-high energy storage characteristics

How do dielectric energy storage films work?

The dielectric energy storage films must effectively integrate strong relaxor characteristics with high polarization properties in order to achieve superior energy storage performance at low electric fields.

How strong is energy storage under a low electric field?

Finally, the Bi 5-x Sm x Mg 0.5 Ti 3.5 O 15 (x = 0.25) film exhibited exceptional Ure (64 J/cm 3), η (81.1 %), and energy storage response (0.1824 J·cm/kV) under a low electric field of 1856 kV/cm. Energy storage response, denoted as W, which characterizes the strength of energy storage under a unit electric field.

Do defects in carbons affect energy storage and electrocatalytic performance?

Therefore, carbons have broadly been studied and utilized in SCs, rechargeable batteries, and electrocatalytic reactions. [20 - 23] Form the surface structure viewpoint, the introduction of defects in carbons could largely influence their energy storage and electrocatalytic performances.

How does defect engineering affect electrochemical properties?

Defect engineering could modulate the structures of carbon materials, thereby affecting their electronic properties. The presence of defects on carbons may lead to asymmetric charge distribution, change in geometrical configuration, and distortion of the electronic structure that may result in unexpected electrochemical performances.

What is defect engineering?

“Defect engineering” refers to the goal-directed control of the type, concentration, configuration, and spatial distribution of defect to tailor the electrochemical properties of carbon materials. The incorporation of defects on carbons allows for tuning their surface structures and intrinsic properties.

How does defect engineering improve electrochemical performance?

Defect engineering was employed as an effective strategy to modify the composition and structure of carbon materials for enhanced electrochemical performances. The presence of defects on carbons yielded changes in their charge/spin redistribution and altered their local electronic structures.