Open Access

REVIEW

A Review on the Research Progress of Layered Double Hydroxides Electrode Materials for Supercapacitors

Hengzheng Li^1,2, Jie Yang^1,*

1 School of Mechanical and Electronic Engineering, Suzhou University, Suzhou, 234000, China
2 School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, 230026, China

* Corresponding Author: Jie Yang. Email:

Energy Engineering 2025, 122(7), 2589-2609. https://doi.org/10.32604/ee.2025.063268

Received 10 January 2025; Accepted 26 March 2025; Issue published 27 June 2025

Abstract

Layered double hydroxides (LDHs) are a class of transition metal-based materials characterized by their two-dimensional nano-layered structure. They offer several advantages, such as easy adjustability of morphology and structure and simple preparation methods, making them highly promising for the development of low-cost, high energy density supercapacitors. This article begins with a brief introduction to the basic structure, energy storage mechanism, and application challenges of LDHs. It then proceeds to summarize the innovations in the preparation methods of LDH electrode materials, such as the application of high precision synthesis technologies including component regulation, amorphization, and the introduction of oxygen vacancies. The achievements in performance optimization are also analyzed, for example, the improvement of specific capacitance and rate performance through nanostructure design and nanosizing treatment. However, it is also pointed out that there are problems such as low charge transfer efficiency and poor cycling stability in practical applications. This review is of great reference value for a deep understanding of the research status and development direction of LDH electrode materials. It is expected that breakthroughs will be achieved in aspects such as green and sustainable preparation processes and the expansion of applications in multiple fields in the future.

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