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Metal-Ligand Bonds

Metal-Ligand Bonds

The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes.
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...

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Related Experiment Video

Updated: Jun 25, 2026

Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance

Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance

Published on: April 27, 2018

Efficient Zn Metal Anode Enabled by O,N-Codoped Carbon Microflowers.

Zhixiao Xu¹, Song Jin^2,3, Nianji Zhang¹

¹Department of Chemical and Materials Engineering, University of Alberta, 9211-116 Street NW, Edmonton, Alberta T6G 1H9, Canada.

|January 20, 2022

Summary

Researchers developed a novel carbon superstructure host for zinc metal anodes, improving energy storage efficiency and lifespan. This breakthrough enables high-depth-of-discharge zinc anodes for safer, cheaper, and more powerful batteries and supercapacitors.

Keywords:

N-codoped carbon O carbon flower dendrite-free zinc metal hierarchical self-assembly polyimide

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Published on: December 6, 2021

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Last Updated: Jun 25, 2026

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Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production

Published on: December 6, 2021

Area of Science:

Materials Science
Electrochemistry
Energy Storage

Background:

Zinc metal anodes offer a promising, cost-effective solution for energy storage devices.
Efficient zinc plating/stripping under high depth of discharge (DOD) remains a significant challenge for practical applications.

Purpose of the Study:

To synthesize an efficient host material for high-DOD zinc metal anodes.
To guide zinc nucleation and growth for enhanced plating/stripping performance.

Main Methods:

Density functional theory (DFT) calculations guided the rational design of monomers.
Polymer self-assembly and structure-preserved carbonization were employed to create a 3D hierarchical carbon superstructure (C_flower).
Oxygen and nitrogen heteroatoms were incorporated as zincophilic dopants.

Main Results:

The C_flower host facilitated heteroepitaxial nucleation, promoting horizontal zinc plating.
High Coulombic efficiency (CE) and extended cycle life were achieved, even at high DOD.
Paired with battery and supercapacitor cathodes, the C_flower-hosted anode demonstrated superior capacity, rate capability, and longevity.

Conclusions:

The developed C_flower host effectively addresses challenges in zinc metal anode performance.
This material enables highly efficient and stable zinc plating/stripping under high DOD.
The C_flower host shows significant potential for practical, scalable, and efficient zinc-metal-based energy storage devices.