Ni<sub>3</sub>Fe/BC nanocatalysts based on biomass charcoal self-reduction achieves excellent hydrogen storage performance of MgH<sub>2</sub>

Hou, Quanhui; Zhang, Jiaqi; Zheng, Zhu‘An; Yang, Xinglin; Ding, Zhao

doi:10.1039/d2dt02425j

Cited by 10 publications

(4 citation statements)

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“…Additionally, the hydrogen desorption activation energy ( E a ) of the MgH 2 –5 wt % Ni@C composites is calculated as 78.09 kJ/mol based on the Johnson–Mehl–Avrami (JMA) model and Arrhenius equation (Figure S6). Compared with other catalysts, ,− the Ni@C catalyst in this work shows an enhanced catalytic performance. For example, the E a values of MgH 2 –Ni 3 Fe/BC and MgH 2 –10Ni(acac) 2 are 102.01 and 112.1 kJ/mol, respectively.…”

Section: Resultsmentioning

confidence: 79%

Short-Range Nanoreaction Effect on the Hydrogen Desorption Behaviors of the MgH₂–Ni@C Composite

Qian

et al. 2022

ACS Appl. Mater. Interfaces

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Doping a catalyst can efficiently improve the hydrogen reaction kinetics of MgH2. However, the hydrogen desorption behaviors are complicated in different MgH2–catalyst systems. Here, a carbon-encapsulated nickel (Ni@C) core–shell catalyst is synthesized to improve the hydrogen storage properties of MgH2. The complicated hydrogen desorption mechanism of the MgH2–Ni@C composite is elucidated. The experimental and theoretical calculation results indicate a short-range nanoreaction effect on the hydrogen desorption behaviors of the MgH2–Ni@C composite. The Ni@C catalysts and the adjacent MgH2 form nanoreaction sites along with preferential hydrogen desorption. The new interface between the in situ formed Mg and residual MgH2 contributes to the subsequent hydrogen desorption. With the nanoreaction sites increased via adding more catalyst, the short-range nanoreaction effect is more prominent; as a comparison, the interface effect becomes weaker or even disappears. In addition, the core–shell structure catalyst shows ultrahigh structural stability and catalytic activity, even after 50 hydrogen absorption and desorption cycles. Hence, this study provides new insights into the complicated hydrogen desorption behaviors and comes up with the short-range nanoreaction effect in the MgH2–catalyst system.

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Section: Resultsmentioning

confidence: 79%

Short-Range Nanoreaction Effect on the Hydrogen Desorption Behaviors of the MgH₂–Ni@C Composite

Qian

et al. 2022

ACS Appl. Mater. Interfaces

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“…It is worth mentioning that the pure metal Fe exhibited significant catalytic performance in this study. In recent years, iron-based alloys, such as Ni 3 Fe [ 84 , 91 ], FeCoNi [ 85 ] and CoFeB [ 86 ], have been reported, and all these iron-based catalysts exhibited good catalytic performance that can be attributed to the synergistic catalytic effect of multiple active catalytic substances and Fe formed in situ during the hydrogen absorption and desorption process. The presence of multiple catalytic elements together improve the hydrogen absorption and desorption performance of Mg/MgH 2 , but the catalytic performance of the Fe-based alloys still needs to be improved in order to promote the cycle performance of Mg/MgH 2 .…”

Section: Improvement Of Hydrogen Storage Performance Of Mg/mgh ...mentioning

confidence: 99%

“…Later, catalysts, such as graphene templated FeCoNi (FeCoNi@GS) [ 85 ], carbon nanotubes decorated with CoFeB (CoFeB/CNTs) [ 86 ] and Fe–Ni catalyst modified three-dimensional graphene (Fe–Ni@3DG) [ 90 ], were developed, and the development of such catalysts demonstrated that the introduction of carbon materials could promote the catalytic effect of iron-based catalysts and enhance the cycling performance of Mg/MgH 2 . Recently, Hou et al [ 91 ] prepared Ni 3 Fe/BC nanocatalysts by the solid-phase reduction method using low-cost biomass carbon (BC) as a carrier and comprehensively compared the catalytic performance of different catalysts, and the catalyst types and performance are shown in Figure 6 and Figure 7 . From the two figures, it can be seen that the comprehensive hydrogen storage performance of MgH 2 -10 wt.%Ni 3 Fe/BC is excellent.…”

Section: Improvement Of Hydrogen Storage Performance Of Mg/mgh ...mentioning

confidence: 99%

Hydrogen Storage Performance of Mg/MgH2 and Its Improvement Measures: Research Progress and Trends

Yang

Zhang

et al. 2023

Materials

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Due to its high hydrogen storage efficiency and safety, Mg/MgH2 stands out from many solid hydrogen storage materials and is considered as one of the most promising solid hydrogen storage materials. However, thermodynamic/kinetic deficiencies of the performance of Mg/MgH2 limit its practical applications for which a series of improvements have been carried out by scholars. This paper summarizes, analyzes and organizes the current research status of the hydrogen storage performance of Mg/MgH2 and its improvement measures, discusses in detail the hot studies on improving the hydrogen storage performance of Mg/MgH2 (improvement measures, such as alloying treatment, nano-treatment and catalyst doping), and focuses on the discussion and in-depth analysis of the catalytic effects and mechanisms of various metal-based catalysts on the kinetic and cyclic performance of Mg/MgH2. Finally, the challenges and opportunities faced by Mg/MgH2 are discussed, and strategies to improve its hydrogen storage performance are proposed to provide ideas and help for the next research in Mg/MgH2 and the whole field of hydrogen storage.

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“…However, the high thermodynamic stability and sluggish kinetics of Mg-based hydrides have hindered their practical applications [ 5 , 6 , 7 ]. To address these challenges, various strategies have been developed, among which ball milling has emerged as a versatile and effective technique for the synthesis and modification of Mg-based hydrogen storage materials [ 8 , 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

Ball Milling Innovations Advance Mg-Based Hydrogen Storage Materials Towards Practical Applications

Xu,

Li,

Hou

et al. 2024

Materials

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Mg-based materials have been widely studied as potential hydrogen storage media due to their high theoretical hydrogen capacity, low cost, and abundant reserves. However, the sluggish hydrogen absorption/desorption kinetics and high thermodynamic stability of Mg-based hydrides have hindered their practical application. Ball milling has emerged as a versatile and effective technique to synthesize and modify nanostructured Mg-based hydrides with enhanced hydrogen storage properties. This review provides a comprehensive summary of the state-of-the-art progress in the ball milling of Mg-based hydrogen storage materials. The synthesis mechanisms, microstructural evolution, and hydrogen storage properties of nanocrystalline and amorphous Mg-based hydrides prepared via ball milling are systematically reviewed. The effects of various catalytic additives, including transition metals, metal oxides, carbon materials, and metal halides, on the kinetics and thermodynamics of Mg-based hydrides are discussed in detail. Furthermore, the strategies for synthesizing nanocomposite Mg-based hydrides via ball milling with other hydrides, MOFs, and carbon scaffolds are highlighted, with an emphasis on the importance of nanoconfinement and interfacial effects. Finally, the challenges and future perspectives of ball-milled Mg-based hydrides for practical on-board hydrogen storage applications are outlined. This review aims to provide valuable insights and guidance for the development of advanced Mg-based hydrogen storage materials with superior performance.

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Ni₃Fe/BC nanocatalysts based on biomass charcoal self-reduction achieves excellent hydrogen storage performance of MgH₂

Abstract: Bimetallic catalysts offer unique advantages for improving hydrogen storage performance of MgH2. Herein, Ni3Fe/BC nanocatalysts were prepared via simple solid phase reduction method using low-cost biomass charcoal (BC) material as...

Cited by 10 publications

References 62 publications

Short-Range Nanoreaction Effect on the Hydrogen Desorption Behaviors of the MgH₂–Ni@C Composite

Short-Range Nanoreaction Effect on the Hydrogen Desorption Behaviors of the MgH₂–Ni@C Composite

Hydrogen Storage Performance of Mg/MgH2 and Its Improvement Measures: Research Progress and Trends

Ball Milling Innovations Advance Mg-Based Hydrogen Storage Materials Towards Practical Applications

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Ni3Fe/BC nanocatalysts based on biomass charcoal self-reduction achieves excellent hydrogen storage performance of MgH2

Abstract: Bimetallic catalysts offer unique advantages for improving hydrogen storage performance of MgH2. Herein, Ni3Fe/BC nanocatalysts were prepared via simple solid phase reduction method using low-cost biomass charcoal (BC) material as...

Cited by 10 publications

References 62 publications

Short-Range Nanoreaction Effect on the Hydrogen Desorption Behaviors of the MgH2–Ni@C Composite

Short-Range Nanoreaction Effect on the Hydrogen Desorption Behaviors of the MgH2–Ni@C Composite

Hydrogen Storage Performance of Mg/MgH2 and Its Improvement Measures: Research Progress and Trends

Ball Milling Innovations Advance Mg-Based Hydrogen Storage Materials Towards Practical Applications

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Ni₃Fe/BC nanocatalysts based on biomass charcoal self-reduction achieves excellent hydrogen storage performance of MgH₂

Short-Range Nanoreaction Effect on the Hydrogen Desorption Behaviors of the MgH₂–Ni@C Composite

Short-Range Nanoreaction Effect on the Hydrogen Desorption Behaviors of the MgH₂–Ni@C Composite