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Related Experiment Video

Updated: May 11, 2026

Towards Biomimicking Wood: Fabricated Free-standing Films of Nanocellulose, Lignin, and a Synthetic Polycation

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Multilaminate Energy Storage Films from Entropy-Driven Self-Assembled Supramolecular Nanocomposites.

He Li^1,2, Emma Vargo^1,3, Zongliang Xie^1,2

¹Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.

Advanced Materials (Deerfield Beach, Fla.)

|April 26, 2024

Summary

Researchers developed advanced nanocomposite films using self-assembly for superior energy storage. These materials enhance dielectric strength and energy efficiency in electrostatic film capacitors by controlling nanoparticle distribution.

Keywords:

energy storage lamellar structures self‐assembly supramolecular nanocomposites thin film fabrication

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Bulk and Thin Film Synthesis of Compositionally Variant Entropy-stabilized Oxides

Bulk and Thin Film Synthesis of Compositionally Variant Entropy-stabilized Oxides

Published on: May 29, 2018

Area of Science:

Materials Science
Polymer Chemistry
Nanotechnology
Energy Storage

Background:

Composite materials with polymers and inorganic nanoparticles (NPs) show promise for energy storage.
Controlling NP dispersion in nanocomposites is crucial for performance but remains challenging.
Understanding the structure-performance relationship in nanocomposites is hindered by dispersion issues.

Purpose of the Study:

To fabricate block copolymer-based supramolecular nanocomposite films with controlled NP locations and ordered structures.
To investigate the use of these nanocomposites in electrostatic film capacitors for improved energy storage.
To establish a clear correlation between microstructure and performance in organic-inorganic hybrid energy storage materials.

Main Methods:

Employed a facile entropy-driven self-assembly approach to create block copolymer-based supramolecular nanocomposite films.
Fabricated highly ordered lamellar structures within the nanocomposite films.
Utilized finite element simulations and statistical modeling to analyze electrical properties and failure mechanisms.

Main Results:

Achieved well-distributed inorganic NPs within self-assembled multilaminate nanocomposites, forming oriented interfacial barriers.
Demonstrated suppressed leakage current and mitigated breakdown risk, leading to superior dielectric strength compared to disordered counterparts.
Exhibited high energy efficiency (>90% at 650 MV/m), remarkable energy density, and power density in optimized lamellar nanocomposite films.

Conclusions:

The entropy-driven self-assembly approach enables the fabrication of highly ordered nanocomposite films for advanced energy storage.
Controlled lamellar structures and NP distribution significantly enhance dielectric properties and energy storage performance.
This work provides a significant advancement in designing organic-inorganic hybrids, linking microstructure to superior performance in energy storage devices.