Metal-organic framework, method for manufacturing the same, and metal-air battery comprising the same

Nitride-based MOF catalysts with dimension and shell count controlled by solvent ratio and surfactant modulation

This technology precisely controls the 0–3D network structure and shell count of metal-organic frameworks (MOFs) by aminating transition metal nitride precursors before combining them with organic ligands, while adjusting the ratio of organic solvent to deionized water and the type of surfactant used.

Conventional MOFs suffer from low stability against heat, moisture, acids, and bases, as well as poor electrical conductivity, making long-term use difficult. In particular, they exhibit a sharp decline in performance under high current density conditions.

This technology implements an N-dimensional polymer network structure by aminating metal precursor sources, mixing them with organic ligands, and performing reduction treatment. It forms stable shell structures through dimension control based on solvent composition and step-by-step heat treatment temperature control. This allows for application in air-cathode catalysts for metal-air batteries and OER electrodes for water electrolysis, reducing reliance on precious metal catalysts while maintaining long-term bidirectional activity for oxygen reactions.

‍

‍

Key Features:

• Preparing a metal precursor source by adding a transition metal nitride precursor to a first solvent containing an organic solvent and a surfactant, followed by stirring
• Preparing an aminated transition metal precursor source by adding a pH adjuster and an amine-based crosslinking agent to the metal precursor source
• Preparing a preliminary metal-organic framework by mixing the aminated metal precursor source with a second solvent containing an organic ligand precursor and performing heat treatment
• Reducing the preliminary metal-organic framework to obtain a metal-organic framework synthesized based on DMF and TX-100

‍

This invention was developed with support from the Ministry of Science and ICT for the development of a high-energy-density soft materials platform through the design of new organic superionic plastic crystal materials.

‍