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Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes

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Published on: August 16, 2018

Vertically Aligned Metal-Organic Framework Arrays as Protective Layers for Durable Zinc Anodes with Low

Zhonglin Li^1,2, Guili Zhao², Xiang Chu²

¹School of Environment and Civil Engineering, Research Institute of Interdisciplinary Science, Dongguan University of Technology, Dongguan, Guangdong, 523808, P.R. China.

Angewandte Chemie (International Ed. in English)

|December 1, 2025

Summary

Researchers developed novel metal-organic frameworks (MOFs) as protective layers for zinc anodes in rechargeable aqueous zinc-ion batteries (ZIBs). These binder-free MOFs significantly improve battery stability and lifespan by preventing dendrite growth and enhancing ion transport.

Keywords:

Aqueous zinc–ion batteries Ligand‐induced morphology regulation Metal–organic frameworks Protective layer Zinc anode

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Zinc-Sponge Battery Electrodes that Suppress Dendrites

Zinc-Sponge Battery Electrodes that Suppress Dendrites

Published on: September 29, 2020

Area of Science:

Materials Science
Electrochemistry
Energy Storage

Background:

Rechargeable aqueous zinc-ion batteries (ZIBs) offer safe and cost-effective large-scale energy storage.
Zn anode instability, including side reactions and dendrite growth, hinders ZIB practical application.
Existing protective layers often impede crucial Zn2+ transport and deposition/dissolution kinetics.

Purpose of the Study:

To develop a binder-free protective layer for Zn anodes in ZIBs using a ligand-induced morphological regulation strategy.
To investigate the impact of different MOF morphologies on Zn anode performance.
To enhance the stability and cycle life of aqueous ZIBs.

Main Methods:

Fabrication of binder-free MOF protective layers on Zn anodes via electrodeposition.
Creation of vertically aligned MOF arrays (VAA-ZnTMA@Zn), shaggy horizontal nanosheets (SHN-ZnMI@Zn), and compact nanoparticles (CNP-ZnTPA@Zn).
Electrochemical characterization, theoretical calculations, and finite element simulations to analyze performance and mechanisms.

Main Results:

The VAA-ZnTMA@Zn electrode demonstrated an ultralow overpotential (20 mV) and extended cycle life (2400 h).
A full cell (VAA-ZnTMA@Zn//MnO2@CC) achieved high average Coulombic efficiency (99.6%) and 82% capacity retention after 2000 cycles.
Vertically aligned MOF channels facilitated uniform Zn2+ transport and deposition, suppressing dendrite formation.

Conclusions:

Ligand-induced morphological regulation provides an effective strategy for fabricating advanced MOF protective layers for Zn anodes.
The VAA-ZnTMA@Zn anode significantly enhances the durability and performance of aqueous ZIBs.
This approach offers a promising route toward practical and long-lasting aqueous ZIBs.