Related Experiment Video
Updated: Jan 13, 2026
12:00
Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System
Published on: January 7, 2022
14.5K
Large Capacitive Energy Storage in Linear-Like MLCCs with Tailored Atomic-Scale Polymorphic Polarization Fluctuations
Da Li1, Ze Zhang1, Weichen Zhao2
1Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, School of Material Science and Engineering, Shaanxi University of Science & Technology, Xi'an, China.
Advanced Materials (Deerfield Beach, Fla.)
|January 8, 2026
Summary
Entropy engineering in lead-free multilayer ceramic capacitors (MLCCs) creates atomic-scale disorder, enhancing energy storage. This approach yields high recoverable energy density and efficiency for advanced electronic devices.
Area of Science:
- Materials Science
- Condensed Matter Physics
- Ceramics Engineering
Background:
- Growing demand for portable electronics necessitates advanced energy storage solutions.
- Lead-free multilayer ceramic capacitors (MLCCs) are crucial components requiring improved energy storage capabilities.
Purpose of the Study:
- To develop a novel strategy for enhancing the energy storage properties of lead-free MLCCs.
- To investigate the effects of entropy engineering on atomic-scale polarization and material performance.
Main Methods:
- Entropy engineering was employed to induce atomic-scale lattice disorder.
- Polymorphic polarization fluctuations were generated by increasing entropy, leading to coexisting rhombohedral and tetragonal phases.
- Polar anisotropy and domain switching barriers were significantly reduced.
Main Results:
- A giant recoverable energy density (Wrec) of 21.3 J·cm⁻³ was achieved at 1045 kV·cm⁻¹.
- High energy efficiency (η) of 94.5% was observed.
- The high-entropy MLCC demonstrated excellent broad-temperature, frequency, and cyclic stability.
Conclusions:
- Entropy engineering is an effective approach for designing superior-performing lead-free MLCCs.
- The study reveals a critical entropy-structure-performance correlation for MLCC development.
- This work offers a reliable technical strategy for next-generation energy storage devices.
More Related Videos
Related Concept Videos
01:31Dielectric Polarization in a Capacitor
5.9K
The presence of a dielectric medium in a capacitor not only changes the voltage and capacitance but also affects the electric field. In general, dielectrics can be of two types: polar and nonpolar. In a polar dielectric, the positive and negative charges in the molecules are separated by a distance and hence have a permanent dipole moment. In contrast, no such charge separation exists in a nonpolar dielectric, however the nonpolar molecules get polarized in the presence of an external electric...
5.9K
01:25MOS Capacitor
1.4K
A Metal-Oxide-Semiconductor (MOS) capacitor is a fundamental structure used extensively in semiconductor device technology, particularly in the fabrication of integrated circuits and MOSFETs (metal-oxide-semiconductor field-effect transistors). The MOS capacitor consists of three layers: a metal gate, a dielectric oxide, and a semiconductor substrate.
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
1.4K
01:10Energy Stored in Capacitors
1.1K
A parallel plate capacitor, when connected to a battery, develops a potential difference across its plates. This potential difference is key to the operation of the capacitor, as it determines how much electrical energy the capacitor can store.
By integrating the equation that relates voltage and current in a capacitor, one can derive an equation for the voltage across the capacitor at any given time. This equation is crucial in understanding and predicting the behavior of capacitors in...
By integrating the equation that relates voltage and current in a capacitor, one can derive an equation for the voltage across the capacitor at any given time. This equation is crucial in understanding and predicting the behavior of capacitors in...
1.1K
01:12Energy Stored in a Capacitor
4.5K
When an archer pulls the string in a bow, he saves the work done in the form of elastic potential energy. When he releases the string, the potential energy is released as kinetic energy of the arrow. A capacitor works on the same principle in which the work done is saved as electric potential energy. The potential energy (UC) could be calculated by measuring the work done (W) to charge the capacitor.
4.5K
01:15Capacitors
865
Capacitors play a crucial role in car radios, where they filter and store frequencies to ensure clear signal reception. Essentially serving as energy storage devices, capacitors store energy within their electric field and are composed of two parallel conducting plates separated by a dielectric.
When a voltage source is connected to a capacitor, positive and negative charges accumulate on the opposite plates. This accumulation generates a potential difference that equals the product of the...
When a voltage source is connected to a capacitor, positive and negative charges accumulate on the opposite plates. This accumulation generates a potential difference that equals the product of the...
865
01:26Spherical and Cylindrical Capacitor
6.6K
A spherical capacitor consists of two concentric conducting spherical shells of radii R1 (inner shell) and R2 (outer shell). The shells have equal and opposite charges of +Q and −Q, respectively. For an isolated conducting spherical capacitor, the radius of the outer shell can be considered to be infinite.
Conventionally, considering the symmetry, the electric field between the concentric shells of a spherical capacitor is directed radially outward. The magnitude of the field,...
Conventionally, considering the symmetry, the electric field between the concentric shells of a spherical capacitor is directed radially outward. The magnitude of the field,...
6.6K