Boosting the hydrogen storage performance of magnesium hydride with metal organic framework-derived Cobalt@Nickel oxide bimetallic catalyst

Yan Zhang; Jiaguang Zheng; Zhiyu Lu; Mengchen Song; Jiahuan He; Fuying Wu; Liuting Zhang

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Boosting the hydrogen storage performance of magnesium hydride with metal organic framework-derived Cobalt@Nickel oxide bimetallic catalyst

Full Length Article | Updated：2026-01-06

- Boosting the hydrogen storage performance of magnesium hydride with metal organic framework-derived Cobalt@Nickel oxide bimetallic catalyst
- Chinese Journal of Chemical Engineering Vol. 52, Issue 12, Pages: 161-171(2022)
- Affiliations：
  
  1. School of Energy and Power, Jiangsu University of Science and Technology,Zhenjiang,China,212003
  2. State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University,Hangzhou,China,310027
  3. Analysis and Testing Center, Jiangsu University of Science and Technology,Zhenjiang,China,212003
- Author bio：
- Funds：
- DOI：
  CLC：
- Published：2022
- Accepted：
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Yan Zhang, Jiaguang Zheng, Zhiyu Lu, Mengchen Song, Jiahuan He, Fuying Wu, Liuting Zhang. Boosting the hydrogen storage performance of magnesium hydride with metal organic framework-derived Cobalt@Nickel oxide bimetallic catalyst[J]. Chinese Journal of Chemical Engineering, 2022, 52(12): 161-171.
DOI：

Yan Zhang, Jiaguang Zheng, Zhiyu Lu, Mengchen Song, Jiahuan He, Fuying Wu, Liuting Zhang. Boosting the hydrogen storage performance of magnesium hydride with metal organic framework-derived Cobalt@Nickel oxide bimetallic catalyst[J]. Chinese Journal of Chemical Engineering, 2022, 52(12): 161-171. DOI：

摘要

Abstract

In this study

a MOF-derived bimetallic Co@NiO catalyst was synthesized and doped into MgH

to improve the hydrogen desorption and resorption kinetics. The Co@NiO catalyst decreased the onset dehydrogenation temperature of MgH

by 160 ℃

compared with un-doped MgH

. The MgH

+ 9% (mass) Co@NiO composite released 6.6% (mass) hydrogen in 350 s at 315 ℃ and uptook 5.4% (mass) hydrogen in 500 s at 165 ℃

showing greatly accelerated de/rehydrogenation rates. Besides

the desorption activation energy of MgH

+ 9% (mass) Co@NiO was decreased to (93.8 ±8.4) kJ·mol

-1

. Noteworthy

symbiotic Mg

NiH

/Mg

CoH

clusters were

in-situ

formed from bimetallic precursors and inlaid on MgH

surface

which are considered as “multi-step hydrogen pumps”

and provides surface pathways for hydrogen absorption. Meanwhile

the introduced Mg

NiH

/Mg

CoH

interfaces could provide numerous low energy barrier H diffusion channels

therefore accelerating the hydrogen release and uptake. This research proposes new insights to design high-effici

ency bimetallic catalyst for MgH

hydrogen storage.

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