LiAlH4 as a “Microlighter” on the Fluorographite Surface Triggering the Dehydrogenation of Mg(BH4)2: Toward More than 7 wt % Hydrogen Release below 70 °C

Zheng, Jiaguang; Cheng, Hao; Wang, Xuancheng; Chen, Man; Xiao, Xuezhang; Chen, Lixin

doi:10.1021/acsaem.0c00134

Cited by 20 publications

(8 citation statements)

References 51 publications

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“…58 Compared with the pristine NaBH 4 , NaBH 4 @Na 2 B 12 H 12 displayed two peaks by XPS in the B 1s spectrum shifted to higher binding energies, and this indicates an increase in boron number in NaBH 4 @ Na 2 B 12 H 12 . 59 The same redshift was also observed in the Na 1s narrow scan (Figure 2d), and this may be due to the higher interaction strength between Na + and B 12 H 12 2− in NaBH 4 @ Na 2 B 12 H 12 . 60 The atomic ratio between B and Na is around 7.3 and close to the expected theoretical atomic B/Na ratio of 6 in Na 2 B 12 H 12 .…”

Section: ■ Materials and Methodssupporting

confidence: 67%

Core–Shell NaBH₄@Na₂B₁₂H₁₂ Nanoparticles as Fast Ionic Conductors for Sodium-Ion Batteries

Luo

Rawal

Salman

et al. 2022

ACS Appl. Nano Mater.

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Herein, we report on a method to engineer a conductive interface to promote high Na + ionic conductivity in NaBH 4 . By controlled reaction with B 2 H 6 , the ionic conductivity of NaBH 4 is enhanced by 5 orders of magnitude at room temperature. The origin of the enhanced conductivity is believed to be the result of the formation of a Na 2 B 12 H 12 layer on the surface of α-NaBH 4 particles. The resultant NaBH 4 @ Na 2 B 12 H 12 heterostructure exhibits a high ionic conductivity of 10 −4 S cm −1 at 115 °C superior to that of pristine NaBH 4 and shows the potential to act as a solid-state electrolyte for all Na solid-state batteries.

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Section: ■ Materials and Methodssupporting

confidence: 67%

Core–Shell NaBH₄@Na₂B₁₂H₁₂ Nanoparticles as Fast Ionic Conductors for Sodium-Ion Batteries

Luo

Rawal

Salman

et al. 2022

ACS Appl. Nano Mater.

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“…Such behavior was due to the oxygen atoms present as functional groups that improve the decomposition of the intermediates of LiBH 4 . Similarly, Zheng et al reported the dehydrogenation behavior of Mg(BH 4 ) 2 with the addition of LiAlH 4 and fluorographite (FGi). The authors proposed formation of a unique morphology by the reaction between Mg(BH 4 ) 2 and LiAlH 4 , which led to the uniform distribution of Mg(BH 4 ) 2 and LiAlH 4 particles on the surface of FGi.…”

Section: Introductionmentioning

confidence: 91%

Combined Effect of Functionality and Pore Size on Dehydrogenation of Ammonia Borane via Its Nanoconfinement in Polyacrylamide-Grafted Organically Modified Mesoporous Silica

Mishra

Kang

Guo

et al. 2021

ACS Appl. Energy Mater.

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Organically modified poly(acrylamide) (PAM)grafted mesoporous silica nanoparticles (MSNs) have been evaluated for the first time as a hybrid material for hydrogen release experiments via nanoconfinement of ammonia borane (AB). PAM was grafted from two different types of R group (isobutyric acid and phenylethyl)-containing in-built reversible additionfragmentation chain transfer (RAFT) agent-primed MSNs (PAM-COOH-MSNs and PAM-Ph-MSNs). To evaluate the suitability of these PAM-grafted MSNs as an efficient hybrid material for hydrogen release at a lower dehydrogenation temperature compared to neat AB, which was nanoconfined in PAM-grafted MSNs (AB-PAM-COOH-MSNs and AB-PAM-Ph-MSNs). The hydrogen release from AB-nanoconfined PAM-grafted MSNs was performed using temperature-programmed desorption-mass spectrometry (TPD-MS). Significantly, it was observed that AB-PAM-COOH-MSNs and AB-PAM-Ph-MSNs justified the nanoconfinement by a lower onset of hydrogen release temperature in comparison to neat AB. The possible mechanism for the lower dehydrogenation temperature of PAM-COOH-MSNs in comparison to that of PAM-Ph-MSNs was attributed to the size reduction of AB and the interaction between functional groups of polymers and MSNs with AB. Additionally, impurities such as diborane and ammonia during hydrogen release were suppressed for both PAMgrafted MSNs. Justifying the evidence for AB-PAM-COOH-MSNs in comparison to AB-PAM-Ph-MSNs, it can be proposed that organically modified poly(acrylamide)-grafted MSNs can be used as efficient nanocarriers for ammonia borane nanoconfinement and hydrogen release.

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“…The reason for this low dehydrogenation temperature was explained by the lower activation energy of the dissociation of the B-H bond, which was supported by density functional theory calculations. Further improvements were achieved through synergic effects by combining different strategies, including catalyzed composites [197,[230][231][232], by incorporating catalysts directly onto the scaffold [233][234][235], by nanoconfining composites [236,237] or by synthesizing nanoparticles (NPs) on fluorographites (FGi) [201,238]. As an example of the latter strategy, homogeneous dispersed NPs of Mg(BH 4 ) 2 and LiAlH 4 were achieved on an FGi substrate to form a "chocolate cookie" structure.…”

Section: Nanoconfinementmentioning

confidence: 99%

Destabilization of Boron-Based Compounds for Hydrogen Storage in the Solid-State: Recent Advances

et al. 2021

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Boron-based materials have been widely studied for hydrogen storage applications. Examples of these compounds are borohydrides and boranes. However, all of these present some disadvantages that have hindered their potential application as hydrogen storage materials in the solid-state. Thus, different strategies have been developed to improve the dehydrogenation properties of these materials. The purpose of this review is to provide an overview of recent advances (for the period 2015–2021) in the destabilization strategies that have been considered for selected boron-based compounds. With this aim, we selected seven of the most investigated boron-based compounds for hydrogen storage applications: lithium borohydride, sodium borohydride, magnesium borohydride, calcium borohydride, ammonia borane, hydrazine borane and hydrazine bisborane. The destabilization strategies include the use of additives, the chemical modification and the nanosizing of these compounds. These approaches were analyzed for each one of the selected boron-based compounds and these are discussed in the present review.

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LiAlH₄ as a “Microlighter” on the Fluorographite Surface Triggering the Dehydrogenation of Mg(BH₄)₂: Toward More than 7 wt % Hydrogen Release below 70 °C

Cited by 20 publications

References 51 publications

Core–Shell NaBH₄@Na₂B₁₂H₁₂ Nanoparticles as Fast Ionic Conductors for Sodium-Ion Batteries

Core–Shell NaBH₄@Na₂B₁₂H₁₂ Nanoparticles as Fast Ionic Conductors for Sodium-Ion Batteries

Combined Effect of Functionality and Pore Size on Dehydrogenation of Ammonia Borane via Its Nanoconfinement in Polyacrylamide-Grafted Organically Modified Mesoporous Silica

Destabilization of Boron-Based Compounds for Hydrogen Storage in the Solid-State: Recent Advances

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LiAlH4 as a “Microlighter” on the Fluorographite Surface Triggering the Dehydrogenation of Mg(BH4)2: Toward More than 7 wt % Hydrogen Release below 70 °C

Cited by 20 publications

References 51 publications

Core–Shell NaBH4@Na2B12H12 Nanoparticles as Fast Ionic Conductors for Sodium-Ion Batteries

Core–Shell NaBH4@Na2B12H12 Nanoparticles as Fast Ionic Conductors for Sodium-Ion Batteries

Combined Effect of Functionality and Pore Size on Dehydrogenation of Ammonia Borane via Its Nanoconfinement in Polyacrylamide-Grafted Organically Modified Mesoporous Silica

Destabilization of Boron-Based Compounds for Hydrogen Storage in the Solid-State: Recent Advances

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LiAlH₄ as a “Microlighter” on the Fluorographite Surface Triggering the Dehydrogenation of Mg(BH₄)₂: Toward More than 7 wt % Hydrogen Release below 70 °C

Core–Shell NaBH₄@Na₂B₁₂H₁₂ Nanoparticles as Fast Ionic Conductors for Sodium-Ion Batteries

Core–Shell NaBH₄@Na₂B₁₂H₁₂ Nanoparticles as Fast Ionic Conductors for Sodium-Ion Batteries