# Piezoelectricity of layered double hydroxides: perspectives regarding piezocatalysis and nanogenerators

## TL;DR

This paper reviews the potential of layered double hydroxides in piezoelectric energy conversion and smart electronics.

## Contribution

It highlights recent advances and future directions in LDH-based piezoelectric materials and devices.

## Key findings

- LDHs show promise for piezocatalysis and wearable electronics due to their flexible structure.
- Composite materials can enhance the electroactive performance of LDH-based devices.
- Systematic research on LDH composition and structure is needed to optimize piezoelectric properties.

## Abstract

Recent research in alternate sources of energy such as piezoelectric energy conversion devices has positioned layered double hydroxides (LDHs) as promising candidates among the other two-dimensional materials. With their unique flexible layered structure, LDHs hold great potential for piezocatalysis and powering smart wearable electronics. Despite their promise, this area of study is still in its infancy and this review explores its recent advances. The discussion encompasses LDH-based piezoelectric nanogenerators, piezocatalytic and piezo-photocatalytic properties of LDHs, and composite material synergies that enhance the overall electroactive performance. Looking to the future, systematic research into the effects of LDHs’ composition and structure on piezoelectric properties will be crucial to unlock their full potential. This mini-review aims to inspire the audience with valuable ideas for the development of new LDH-based piezoelectric materials, thereby contributing to the development of next-generation high-performance piezoelectric devices.