Converting H+ from coordinated water into H− enables super facile synthesis of LiBH4

Chen, Kang; Ouyang, Liuzhang; Zhong, Hao; Liu, Jiangwen; Wang, Hui; Shao, Huaiyu; Zhang, Yao; Zhu, Min

doi:10.1039/c9gc01897b

Cited by 172 publications

(72 citation statements)

References 44 publications

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“…Therefore, it can be concluded that the factor that improves the desorption performance of NaAlH 4 is the smaller particle size, caused by the hardness and stability of SrTiO 3 . Nevertheless, further research is sensible to be done to investigate the rehydrogenation/regeneration process as in previous study [73][74][75] and the cycle life of the NaAlH 4 doped with 10 wt% SrTiO 3 .…”

Section: Resultsmentioning

confidence: 99%

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%

Enhanced dehydrogenation performance ofNaAlH₄by the addition of sphericalSrTiO₃

et al. 2021

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“…However, the tricky heating-wasting process for obtaining anhydrous LiBO 2 at elevated temperature (~ 470 ℃) is inevitable [ 200 ]. Stimulated by the successful regeneration of NaBH 4 , Ouyang et al [ 201 ] reported a facile method to regenerate LiBH 4 by ball milling its real hydrolysis by-product (LiBO 2 ·2H 2 O) with Mg under ambient conditions with a yield of ~ 40%. This method bypasses the energy-intensive dehydration procedure to remove water from LiBO 2 ·2H 2 O and does not require high-pressure H 2 gas, therefore leading to much reduced costs.…”

Section: Recent Advances In Regeneration Process Of Borohydrides From Hydrolysis By-productsmentioning

confidence: 99%

Hydrogen Production via Hydrolysis and Alcoholysis of Light Metal-Based Materials: A Review

et al. 2021

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As an environmentally friendly and high-density energy carrier, hydrogen has been recognized as one of the ideal alternatives for fossil fuels. One of the major challenges faced by “hydrogen economy” is the development of efficient, low-cost, safe and selective hydrogen generation from chemical storage materials. In this review, we summarize the recent advances in hydrogen production via hydrolysis and alcoholysis of light-metal-based materials, such as borohydrides, Mg-based and Al-based materials, and the highly efficient regeneration of borohydrides. Unfortunately, most of these hydrolysable materials are still plagued by sluggish kinetics and low hydrogen yield. While a number of strategies including catalysis, alloying, solution modification, and ball milling have been developed to overcome these drawbacks, the high costs required for the “one-pass” utilization of hydrolysis/alcoholysis systems have ultimately made these techniques almost impossible for practical large-scale applications. Therefore, it is imperative to develop low-cost material systems based on abundant resources and effective recycling technologies of spent fuels for efficient transport, production and storage of hydrogen in a fuel cell-based hydrogen economy.

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“…Lithium borohydrides, members of the family of complex metal hydrides and well-known candidates for hydrogen storage [ 29 , 30 , 31 ], have drawn intense research interests and proved to be a new class of promising SSEs for ASSLBs because of their excellent Li-ion conduction properties [ 32 , 33 ]. As a representative material, LiBH 4 , in the hexagonal phase ( P6 3 mc ), exhibits high ionic conductivity (10 −3 S cm −1 ) at 120 °C, while its phase transformation to orthorhombic phase ( Pnma ) occurs below 110 °C, leading to a significant decrease in its Li-ion conductivity (<10 −7 S cm −1 at room temperature (RT)) [ 34 ].…”

Section: Introductionmentioning

confidence: 99%

Li2(BH4)(NH2) Nanoconfined in SBA-15 as Solid-State Electrolyte for Lithium Batteries

Yang

Liu

et al. 2021

Nanomaterials

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Solid electrolytes with high Li-ion conductivity and electrochemical stability are very important for developing high-performance all-solid-state batteries. In this work, Li2(BH4)(NH2) is nanoconfined in the mesoporous silica molecule sieve (SBA-15) using a melting–infiltration approach. This electrolyte exhibits excellent Li-ion conduction properties, achieving a Li-ion conductivity of 5.0 × 10−3 S cm−1 at 55 °C, an electrochemical stability window of 0 to 3.2 V and a Li-ion transference number of 0.97. In addition, this electrolyte can enable the stable cycling of Li|Li2(BH4)(NH2)@SBA-15|TiS2 cells, which exhibit a reversible specific capacity of 150 mAh g−1 with a Coulombic efficiency of 96% after 55 cycles.

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Converting H⁺ from coordinated water into H⁻ enables super facile synthesis of LiBH₄

Abstract: LiBH4 has excellent application potential as an off- or on-board hydrogen carrier for its unparalleled hydrogen capacity (18.5 wt%).

Cited by 172 publications

References 44 publications

Enhanced dehydrogenation performance ofNaAlH₄by the addition of sphericalSrTiO₃

Enhanced dehydrogenation performance ofNaAlH₄by the addition of sphericalSrTiO₃

Hydrogen Production via Hydrolysis and Alcoholysis of Light Metal-Based Materials: A Review

Li2(BH4)(NH2) Nanoconfined in SBA-15 as Solid-State Electrolyte for Lithium Batteries

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Converting H+ from coordinated water into H− enables super facile synthesis of LiBH4

Abstract: LiBH4 has excellent application potential as an off- or on-board hydrogen carrier for its unparalleled hydrogen capacity (18.5 wt%).

Cited by 172 publications

References 44 publications

Enhanced dehydrogenation performance ofNaAlH4by the addition of sphericalSrTiO3

Enhanced dehydrogenation performance ofNaAlH4by the addition of sphericalSrTiO3

Hydrogen Production via Hydrolysis and Alcoholysis of Light Metal-Based Materials: A Review

Li2(BH4)(NH2) Nanoconfined in SBA-15 as Solid-State Electrolyte for Lithium Batteries

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Converting H⁺ from coordinated water into H⁻ enables super facile synthesis of LiBH₄

Enhanced dehydrogenation performance ofNaAlH₄by the addition of sphericalSrTiO₃

Enhanced dehydrogenation performance ofNaAlH₄by the addition of sphericalSrTiO₃