Hydrogen storage in light-metal based systems: A review

Ouyang, Liuzhang; Chen, Kang; Jiang, Junwei; Yang, Xu Sheng; Zhu, Min

doi:10.1016/j.jallcom.2020.154597

Cited by 165 publications

(47 citation statements)

References 256 publications

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“…As‐milled NaAlH 4 has three significant endothermic peaks between 125°C and 350°C. The first endothermic peak around 191°C is assigned to Equation (1). The second is the weak endothermic peak at 276°C, which may be caused by the phase change of α ‐Na 3 AlH 6 to β ‐Na 3 AlH 6 .…”

Section: Resultsmentioning

confidence: 99%

“…However, one of the few remaining obstacles to commercial usage (such as for transportation) is the lack of on-board hydrogen storage systems. 1,2 Hydrogen may be stored in three forms: liquid, gaseous and solid-state forms. The development of hydrogen storage with excellent performance as well as high hydrogen-carrying capacity is crucial for applications of solid-state hydrogen storage.…”

Section: Introductionmentioning

confidence: 99%

“…Hydrogen is viewed as one of the renewable energy carriers and is an environment‐friendly energy source for the future. However, one of the few remaining obstacles to commercial usage (such as for transportation) is the lack of on‐board hydrogen storage systems 1,2 . Hydrogen may be stored in three forms: liquid, gaseous and solid‐state forms.…”

Section: Introductionmentioning

confidence: 99%

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Enhanced dehydrogenation performance ofNaAlH₄by the addition of sphericalSrTiO₃

et al. 2021

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Sluggish sorption kinetics, high decomposition temperature and unsatisfactory cycles of hydrogen release and uptake (reversibility) remain big challenges for using sodium alanate (NaAlH 4 ) as a practical hydrogen storage medium. In solid-state hydrogen storage materials, especially NaAlH 4 , finding effective catalysts and using mechanical treatment represent promising solutions to overcome the drawbacks of NaAlH 4 . For the first time, in this work, the influence of spherical strontium titanate (SrTiO 3 ) on the dehydrogenation behavior of NaAlH 4 has been investigated. Here, we report that the onset desorption temperature is decreased and the desorption kinetics of NaAlH 4 is enhanced with the addition of 10 wt% of spherical SrTiO 3 catalyst. Using Kissinger's technique, the apparent activation energy of the NaAlH 4 doped with 10 wt% SrTiO 3 composites for the two-step dehydrogenation was identified as 79 and 92 kJ/mol, which was decreased significantly from that of undoped NaAlH 4 (116 and 122 kJ/mol, respectively). Scanning electron microscopy results indicated that the NaAlH 4 particle sizes decreased by milling with SrTiO 3 . X-ray diffraction results indicated that SrTiO 3 did not react or change during the milling and desorption (heating) processes. The improvements in the desorption properties of NaAlH 4 resulted from the ability of SrTiO 3 to reduce the physical structure of the NaAlH 4 during the ball milling process.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Enhanced dehydrogenation performance ofNaAlH₄by the addition of sphericalSrTiO₃

et al. 2021

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“…To achieve the efficient utilization of solar energy, the conversion of solar energy into hydrogen fuel (i.e., hydrogen gas) has become a potential solution in this field [21]. Specifically, as an ideal carrier for solar energy, hydrogen fuel shows a serial of excellent properties, such as carbon-free and none-emission features, high energy density (~140 MJ kg −1 ), storability (e.g., hydrogen storage alloys and liquid hydrogen), and mature technology for electricity generation (e.g., hydrogen fuel cells and hydrogen gas steam boilers) [22][23][24][25][26]. Consequently, the solar-to-hydrogen (STH) conversion can not only overcome the drawbacks of solar energy but also provide a feasible way for the large-scale and long-term development of solar energy.…”

Section: Introductionmentioning

confidence: 99%

Novel integrated strategies toward efficient and stable unassisted photoelectrochemical water splitting

Wang

Hou

et al. 2020

Sustainable Materials and Technologies

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© 2020 Unassisted photoelectrochemical (PEC) water splitting for hydrogen evolution has been regarded as a sustainable route for the harvest and utilization of solar energy. To achieve such unassisted PEC water splitting, two novel integrated strategies have been developed: to design tandem structures of photoanodes/photocathodes and to construct hybrid devices of solar/PEC cells. Some key unsolved problems, however, still limit the further development of high-performance unassisted PEC water splitting, such as low efficiency, poor stability, and high cost. Herein, we present a brief summary of the latest development in this area and propose perspectives for further enhancing this state-of-the-art solarto-hydrogen conversion technology, including all-metal oxide photoelectrodes, nanoarray design, surface modification, device coupling, monolithic configuration, and multi-integration.

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“…Storing hydrogen in a safe, effective and economic way, however, is a great challenge in the development of a hydrogen-based economy, because of the extremely low volumetric density (0.0899 kg m −3 ) at ambient condition (Schlapbach and Züttel, 2001 ). Compared to pressurizing gaseous or liquefying hydrogen, storing hydrogen in metal hydride has definite advantages in terms of gravimetric and volumetric density, safety, and energy efficiency, for both mobile and stationary applications (Wu, 2008 ; He et al, 2019 ; Ouyang et al, 2020 ). Criteria developed by the US Department of Energy (DOE) for onboard hydrogen storage for light-duty fuel cell vehicles include 6.5 wt% of systematic gravimetric density and 50 kg H 2 m −3 of volumetric density along with other stringent properties such as operating temperature (<85°C), extended cycle-life, fast kinetics, safety, and cost.…”

mentioning

confidence: 99%