Extraordinary Dielectric Properties at Heterojunctions of Amorphous Ferroelectrics

Abstract

Materials having a high dielectric constant are needed for a variety of electrical applications from transistors to capacitors. Ferroelectric amorphous-oxide (glass) alkali-ion electrolytes of composition A2.99Ba0.005ClO (A = Li, Na) are shown by two different types of measurement and different consistent analyses to have extraordinarily high dielectric constants, varying from 109 at 25 °C to 1010 at 220 °C if the glass is properly conditioned. These anomalously high dielectric properties coexist with alkali-ion conductivities at 25 °C that are equivalent to those of the best organic-liquid electrolytes of a Li-ion cell, and cyclic voltammetry (CV) in a Au/glass electrolyte/Au cell is stable from −10 to +10 V. A model to interpret microscopically all the key features of the CV curves shows that the electric-double-layer capacitors that form at the gold/electrolyte interfaces in the Au/glass electrolyte/Au heterojunction reverse polarization at an applied voltage V = ±2.1 V, resulting in three almost equivalent discharging capacitances for a single physical capacitor from −10 to +10 V.

An All-Solid-State Coaxial Structural Battery Using Sodium-Based Electrolyte

“…The peculiarity of the composite coaxial structure relies on the use of a ferroelectric glass electrolyte with enhanced thermal and electrochemical properties enabled by its ferroelectric and ionic character [ 27 , 28 ].…”

Regulating Zn Deposition via an Artificial Solid–Electrolyte Interface with Aligned Dipoles for Long Life Zn Anode

“…BaTiO 3 (BTO), a typical perovskite type material with ABO 3 structure, has been currently employed for energy storage composite [ 28 ]. Under the applied electric field, the polarization of an ionically bonded crystal dielectric material is produced, which results from the movement of cation from the center of the symmetry site [ 29 ]. In BTO structure, Ti 4+ cation is in the [TiO 6 ] octahedral interstitial sites [ 30 ].…”

Structural Batteries: A Review

“…Figure 1 shows the basic conceptualization of these alternatives, while a schematic representation of the physical principles and the constructive solutions described in this paper is shown in Figure 2. [20] and (b) Solid state battery [21]. Structural power composite applications: (c) Multifunctional material with structural battery electrolyte [20], (d) Multifunctional systems with market available lithium-ion batteries embedding [10] and(e) All-solid-state structural battery.…”

“…The embedded cell idea emerged from the necessity of optimizing the volume, more than the weight, of a composite structure by embedding electrical power elements without compromising their mechanical performance. The bonding process, anyway, does not re- [20] and (b) Solid state battery [21]. Structural power composite applications: (c) Multifunctional material with structural battery electrolyte [20], (d) Multifunctional systems with market available lithium-ion batteries embedding [10] and(e) All-solid-state structural battery.…”

“…Figure 2. Structural power composite principles: (a) Lithium-ion battery[20] and (b) Solid state battery[21]. Structural power composite applications: (c) Multifunctional material with structural battery electrolyte[20], (d) Multifunctional systems with market available lithium-ion batteries embedding[10] and(e) All-solid-state structural battery.…”