Metastable energetic nanocomposites of MOF-activated aluminum featured with multi-level energy releases

Wei He; Wen Ao; Guangcheng Yang; Zhijian Yang; Zhaoqi Guo; Pei Jin Liu; Qi Long Yan

doi:10.1016/j.cej.2019.122623

Metastable energetic nanocomposites of MOF-activated aluminum featured with multi-level energy releases

Wei He, Wen Ao, Guangcheng Yang, Zhijian Yang, Zhaoqi Guo, Pei Jin Liu, Qi Long Yan

School of Astronautics

Research output: Contribution to journal › Article › peer-review

113 Scopus citations

Abstract

Development of the high energy storage with controlled way of releases is always desirable but challenging. Herein, a novel design of energy-storage system based on aluminum has been demonstrated with improved energy content. This group of hybrid materials uses energetic metal–organic frameworks (EMOFs) as the precursors of the metal oxides as the oxidizers in conventional nanothermites. These metastable nanocomposites of energetic MOF-activated Al (n-Al@EMOFs) are able to undergo self-sustainable combustion with multi-level energy releases. The resulted n-Al@EMOFs show unique two-step exothermic processes with a total heat release of as highly as 4142 J g⁻¹, which is much higher than that of conventional Al/CuO system. In addition, the strategy could also help to reduce the high susceptibility of n-Al to surface oxidation and lower the ignition temperature of the composites (301.5 °C).

Original language	English
Article number	122623
Journal	Chemical Engineering Journal
Volume	381
DOIs	https://doi.org/10.1016/j.cej.2019.122623
State	Published - 1 Feb 2020

Keywords

Aluminum
Energetic metal–organic frameworks (EMOFs)
Hybrid metastable nanocomposites
Multi-level energy releases

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10.1016/j.cej.2019.122623

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title = "Metastable energetic nanocomposites of MOF-activated aluminum featured with multi-level energy releases",

abstract = "Development of the high energy storage with controlled way of releases is always desirable but challenging. Herein, a novel design of energy-storage system based on aluminum has been demonstrated with improved energy content. This group of hybrid materials uses energetic metal–organic frameworks (EMOFs) as the precursors of the metal oxides as the oxidizers in conventional nanothermites. These metastable nanocomposites of energetic MOF-activated Al (n-Al@EMOFs) are able to undergo self-sustainable combustion with multi-level energy releases. The resulted n-Al@EMOFs show unique two-step exothermic processes with a total heat release of as highly as 4142 J g−1, which is much higher than that of conventional Al/CuO system. In addition, the strategy could also help to reduce the high susceptibility of n-Al to surface oxidation and lower the ignition temperature of the composites (301.5 °C).",

keywords = "Aluminum, Energetic metal–organic frameworks (EMOFs), Hybrid metastable nanocomposites, Multi-level energy releases",

author = "Wei He and Wen Ao and Guangcheng Yang and Zhijian Yang and Zhaoqi Guo and Liu, \{Pei Jin\} and Yan, \{Qi Long\}",

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year = "2020",

month = feb,

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doi = "10.1016/j.cej.2019.122623",

language = "英语",

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AU - He, Wei

AU - Ao, Wen

AU - Yang, Guangcheng

AU - Yang, Zhijian

AU - Guo, Zhaoqi

AU - Liu, Pei Jin

AU - Yan, Qi Long

PY - 2020/2/1

Y1 - 2020/2/1

N2 - Development of the high energy storage with controlled way of releases is always desirable but challenging. Herein, a novel design of energy-storage system based on aluminum has been demonstrated with improved energy content. This group of hybrid materials uses energetic metal–organic frameworks (EMOFs) as the precursors of the metal oxides as the oxidizers in conventional nanothermites. These metastable nanocomposites of energetic MOF-activated Al (n-Al@EMOFs) are able to undergo self-sustainable combustion with multi-level energy releases. The resulted n-Al@EMOFs show unique two-step exothermic processes with a total heat release of as highly as 4142 J g−1, which is much higher than that of conventional Al/CuO system. In addition, the strategy could also help to reduce the high susceptibility of n-Al to surface oxidation and lower the ignition temperature of the composites (301.5 °C).

AB - Development of the high energy storage with controlled way of releases is always desirable but challenging. Herein, a novel design of energy-storage system based on aluminum has been demonstrated with improved energy content. This group of hybrid materials uses energetic metal–organic frameworks (EMOFs) as the precursors of the metal oxides as the oxidizers in conventional nanothermites. These metastable nanocomposites of energetic MOF-activated Al (n-Al@EMOFs) are able to undergo self-sustainable combustion with multi-level energy releases. The resulted n-Al@EMOFs show unique two-step exothermic processes with a total heat release of as highly as 4142 J g−1, which is much higher than that of conventional Al/CuO system. In addition, the strategy could also help to reduce the high susceptibility of n-Al to surface oxidation and lower the ignition temperature of the composites (301.5 °C).

KW - Aluminum

KW - Energetic metal–organic frameworks (EMOFs)

KW - Hybrid metastable nanocomposites

KW - Multi-level energy releases

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DO - 10.1016/j.cej.2019.122623

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SN - 1385-8947

VL - 381

JO - Chemical Engineering Journal

JF - Chemical Engineering Journal

M1 - 122623

ER -

Metastable energetic nanocomposites of MOF-activated aluminum featured with multi-level energy releases

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Keywords

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