Hydrogen storage properties of a Mg–Ce oxide nano-composite prepared through arc plasma method

Long, Sheng Ru; Zou, Jianxin; Liu, Yana; Zeng, Xiaoqin; Ding, Wenjiang

doi:10.1016/j.jallcom.2013.02.063

Cited by 24 publications

(6 citation statements)

References 19 publications

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“…The commercial hydrogen storage and utilization can be achieved by decreasing the temperature of hydrogen desorption, enhancing the kinetics and improving the cycle life span. Alloying and microstructure modification are the main approaches to improve the hydriding properties [10][11][12] . Shao et al reported that Mg-Co alloys present high hydrogen storage capacity of around 3 wt% [10] , which is obviously higher than that of TiFe 0.86 Mn 0.1-x Co x alloys (1.98 wt%) [13] .…”

Section: Hydrogen Storage Materialsmentioning

confidence: 99%

“…However, nano-sized Mg is sensitive to oxygen, which is very dangerous and difficult to store and deliver [14][15][16] . A core-shell structured Mg based nano-composite is an ideal solution to protect the surface of nano-sized Mg for the sake of safety [10,11] . J. X. Zou et al developed a core-shell structured Mg based nano-composite with the surface of Mg particles covered by MgO, RE 2 O 3 nano-grains, which significantly improved hydrogen storage thermodynamic, kinetic and anti-oxidation properties [6] .…”

Section: Hydrogen Storage Materialsmentioning

confidence: 99%

See 1 more Smart Citation

Research Progress in Magnesium Alloys as Functional Materials

Chen

Geng

Pan

2016

Rare Metal Materials and Engineering

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Magnesium alloys have a significant advantage, low density over other structure metals currently and have been widely used in various fields such as transportation and aerospace. With the development of research and the enlargement of research scope, more advantages have been developed: high storage capacity, high theoretical volumetric energy density, extraordinarily high damping capacity, good biocompatibility, excellent shielding efficiency as well as impressive thermal conductivity. Therefore Mg alloys have the potential to be various functional materials, such as hydrogen storage material, rechargeable electrochemical batteries, damping material, biodegradable implant material, electromagnetic shielding material, and thermal conductive material. Unfortunately, each kind of functional material has bottlenecks needing to be broken through, and a lot of researches have to be carried out. This review comprehensively covers the research progress and the up-to-date summary of Mg and Mg alloys as functional materials in recent years. The six kinds of functional materials above all will be discussed.

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Section: Hydrogen Storage Materialsmentioning

confidence: 99%

Section: Hydrogen Storage Materialsmentioning

confidence: 99%

Research Progress in Magnesium Alloys as Functional Materials

Chen

Geng

Pan

2016

Rare Metal Materials and Engineering

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“…Because of the unique 4f electron of the Ce element, Ce-based compounds are widely used in the catalysis field (Trovarelli, 1996). Long et al (2013) reported Mg-Ce oxide powders produced by an arc plasma evaporation method. As a result, enthalpies of hydrogenation and dehydrogenation for Mg/MgH 2 reduce to −71.0 and 75.4 kJ/mol H 2 , respectively.…”

Section: Introductionmentioning

confidence: 99%

Effect of CeH2.73-CeO2 Composites on the Desorption Properties of Mg2NiH4

Cai

Shao

et al. 2020

Front. Chem.

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A series of CeH 2. 73/CeO 2 composites with different ratios of hydride and oxide phases are prepared from the pure cerium hydride via oxidation treatments in the air at room temperature, and they are subsequently doped into Mg 2 NiH 4 by ball milling. The desorption properties of the as-prepared Mg 2 NiH 4 +CeH 2.73 /CeO 2 composites are studied by thermogravimetry and differential scanning calorimetery. Microstructures are studied by scanning electron microscopy and transmission electron microscopy, and the phase transitions during dehydrogenation are analyzed through in situ X-ray diffraction. Results show that the initial dehydrogenation temperature and activation energy of Mg 2 NiH 4 are maximally reduced by doping the CeH 2.73 /CeO 2 composite with the same molar ratio of cerium hydride and oxide. In this case, the CeH 2.73 /CeO 2 composite has the largest density of interface among them, and the hydrogen release effect at the interface between cerium hydride and oxide plays an efficient catalytic role in enhancing the hydrogen desorption properties of Mg 2 NiH 4 .

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“…Oxides can be easily crushed during grinding in mills because they are brittle. The hydride formation and decomposition kinetics of Mg have also been ameliorated by adding oxides to MgH 2 or Mg [9][10][11][12][13][14][15][16][17][18]. Yttria (Y 2 O 3 )-stabilized zirconia (ZrO 2 ) (YSZ) is used for tooth crowns due to its hardness and chemical inertness [19].…”

Section: Introductionmentioning

confidence: 99%

Nickel, Graphene, and Yttria-Stabilized Zirconia (YSZ)-Added Mg by Grinding in Hydrogen Atmosphere for Hydrogen Storage

Song

Choi

Kwak

2019

Metals

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Magnesium (Mg) has good hydrogen storage features except for its slow reaction kinetics with hydrogen and high hydride decomposition temperature. Yttria (Y2O3)-stabilized zirconia (ZrO2) (YSZ), nickel (Ni), and graphene were picked as additives to Mg to solve these problems. Samples with a composition of 92.5 wt% Mg + 2.5 wt% YSZ + 2.5 wt% Ni + 2.5 wt% graphene (designated as Mg + YSZ + Ni + graphene) were prepared by grinding in hydrogen atmosphere. The activation of Mg + YSZ + Ni + graphene was finished at the third cycle (n = 3). Mg + YSZ + Ni + graphene had an efficient hydrogen storage capacity (the amount of hydrogen absorbed for 60 min) over 7 wt% (7.11 wt%) at n = 1. Mg + YSZ + Ni + graphene contained Mg2Ni phase after cycling. The addition of Ni and Ni + YSZ greatly increased the initial hydride formation and decomposition rates, and the amount of hydrogen absorbed and released for 60 min, Ha (60 min) and Hd (60 min), respectively, of a 95 wt% Mg + 5 wt% graphene sample (Mg + graphene). Rapid nucleation of the Mg2Ni-H solid solution in Ni-containing samples is believed to have led to higher initial decomposition rates than Mg + graphene and Mg. The addition of YSZ also enhanced the initial decomposition rate and Hd (60 min) compared to a sample with a composition of 95 wt% Mg + 2.5 wt% Ni + 2.5 wt% graphene (Mg + Ni + graphene).

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Hydrogen storage properties of a Mg–Ce oxide nano-composite prepared through arc plasma method

Cited by 24 publications

References 19 publications

Research Progress in Magnesium Alloys as Functional Materials

Research Progress in Magnesium Alloys as Functional Materials

Effect of CeH2.73-CeO2 Composites on the Desorption Properties of Mg2NiH4

Nickel, Graphene, and Yttria-Stabilized Zirconia (YSZ)-Added Mg by Grinding in Hydrogen Atmosphere for Hydrogen Storage

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