# Block Copolymer Derived Multifunctional Gyroidal Monoliths for 3-D Electrical Energy Storage Applications

## TL;DR

This paper introduces a novel bottom-up synthesis method for 3-D nanohybrid gyroidal monoliths with integrated energy storage components, enabling high-density, reversible lithium-ion battery-like performance in a compact form.

## Contribution

It presents a new approach to fabricating multifunctional 3-D nano-architectures with precise nanoscale control for energy storage applications.

## Key findings

- Reversible charge-discharge behavior observed in initial tests.
- Achieved ultrathin, ordered domains less than 20 nm.
- Significant footprint area reduction compared to traditional designs.

## Abstract

Multifunctional three-dimensional (3-D) nano-architectures, integrating all device components within tens of nanometers, offer great promise for next generation electrical energy storage applications, but have remained challenging to achieve. The lack of appropriate synthesis methods, enabling precise 3-D spatial control at the nanoscale, remains a key issue holding back the development of such intricate architectures. Here we present an approach to such systems based on the bottom-up synthesis of penta-continuous nanohybrid monoliths with four functional components integrated in a triblock terpolymer derived core-shell double gyroid architecture. Two distinct 3 D interpenetrating networks serving as cathode and current collector are separated from a carbon anode matrix by continuous, ultrathin polymer electrolyte shells. All periodically ordered domains are less than 20 nm in their layer dimensions and integrated throughout the macroscopic monolith. Initial electrochemical measurements with the Li-ion/S system exhibit reversible battery-like charge-discharge characteristics with orders of magnitude decreases in footprint area over conventional flat thin layer designs.

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Source: https://tomesphere.com/paper/1706.02134