Ternary imides of Li–Mg and Li–Ca were synthesized tested for hydrogen storage. Li2MgN2H2, as an example, reversibly stores 5.5 wt.-% at temperatures below 180 °C (see Figure) with relatively high desorption plateau pressures. The present work also reveals the significance chemical reactions between amides ionic hydrides in design synthesis novel metal–N–H systems Supporting information this article is available on WWW under http://www.wiley-vch.de/contents/jc_2089/2004/c0571_s.pdf or from...

Non-confined MgH₂ nanoparticles of 4–5 nm diameter enable reversible storage hydrogen up to 6.7 wt% at 30 °C.

<italic>In situ</italic> formed NbTi nanocrystals from a NbTiC solid-solution MXene offer highly stable catalytic activity for hydrogen storage in MgH₂.

MgH2 nanoparticles with a size of <3 nm were formed by direct hydrogenation Bu2Mg inside the pores carbon scaffold. The activation energy for dehydrogenation was lowered 52 kJ mol−1 compared to bulk material, and significantly reduced reaction enthalpy 63.8 ± 0.5 entropy (117.2 0.8 J mol−1) found nanoconfined system.

Vanadium oxide nanoparticles supported on cubic carbon nanoboxes with high catalytic activity for hydrogen storage in MgH₂ were successfully synthesized.

Abstract Garnet‐type oxide Li 6.4 La 3 Zr 1.4 Ta 0.6 O 12 (LLZTO) has attracted considerable attention as a highly promising solid state electrolyte. However, its high ionic conductivity is achievable only after temperature sintering (≈1200 °C) to form dense pellets but with detrimental brittleness and poor contact electrodes. Herein, novel strategy achieve + ion of LLZTO without demonstrated. This realized by ball milling together LiBH 4 , which results in composite unique amorphous dual...

Abstract Stepwise solid‐state reaction between LiNH 2 and LiAlH 4 at a molar ratio of 2:1 is investigated in this paper. It observed that approximately four H atoms are evolved from mixture –LiAlH (2:1) after mechanical ball milling. The transformation tetrahedral [AlH ] – to the octahedral 6 3– Li 3 AlH milling with . Al–N bonding identified by using 27 Al nuclear magnetic resonance (NMR) measurements. NMR data, together results X‐ray diffraction Fourier transform IR measurements, indicate...

Significant improvements in the hydrogen desorption/absorption properties of Li–Mg–N–H system have been achieved by adding a small amount LiBH4. The onset as well peak temperatures desorption shift to lower temperatures. Five wt % can be fully desorbed at 140 °C and reabsorbed 100 °C. kinetics absorption were found 3 times fast pristine system. Thermodynamic analyses show that temperature for equilibrium pressure 1 bar was 70 °C, which is about 20 than enhancement sorption attributed...

The prospect of building a future energy system on hydrogen has stimulated much research effort in developing storage technologies. One the potential materials newly developed is sodium amidoborane (NaNH2BH3) which evolves ∼7.5 wt% at temperatures as low 91 °C. In this paper, two methods synthesizing pure NaNH2BH3 were reported. method by reacting NaH and ammonia borane THF temperatures, other NaNH2 ambient temperature. Non-isothermal testing thermolysis solid showed that evolution was...

A wet incipient impregnation procedure was developed to infiltrate Mg(BH4)2 into the voids of pre-treated activated carbon with a pore diameter <2 nm. The thermal data composite material showed strong broadening signals. peak decomposition temperature shifted lower values by infiltration. Kissinger analysis bulk and nanocomposite revealed high activation barrier for first step dehydrogenation material, which lowered factor two nano-confined hydride.

Conduction with fast Li ion conductivity at room temperature is a major challenge for the development of all solid-state Li-ion batteries. Herein, we demonstrate novel room-temperature ultrafast conductor, lithium borohydride ammonia borane complexes ((LiBH4)x·AB). The incorporation AB into LiBH4 structure intrinsically increases cell volume and decreases density ion, which substantially facilitates conduction. LiBH4·AB complex delivers up to 4.04 × 10–4 S cm–1 25 °C nearly negligible...

Plasma-assisted polymerization of maleic anhydride has been investigated under different experimental conditions. Significant variations in the film chemical structure and properties were obtained using pulsed plasma depositions operated at duty cycles. The structures X-ray photoelectron spectroscopy (XPS) Fourier transform infra red (FT-IR). Surface derivatization reactions decylamine benzylamine used to demonstrate their surface reactivity toward nucleophilic moieties change free energy...

A total of 7.4 wt % hydrogen was released from the mixture magnesium amide and hydride at a molar ratio 1:2 by mechanical ball milling. Fourier Transform Infrared Spectroscopy (FTIR) X-ray Diffraction (XRD) characterizations along with amount different stages milling reveal that imide first formed in reaction. The then reacted continuously converted to nitride hydrogen. Thermodynamic calculation shows desorption is mild endothermic reaction standard enthalpy change about 3.5 kJ/mol H2.

Structural and compositional changes in the Li−Mg−N−H system have been studied by probing pressure composition isotherms at different hydrogenation/dehydrogenation stages. The results of X-ray diffractometry Fourier transform infrared spectroscopy show that LiNH2 a ternary imide with Li2Mg2(NH)3 are reversibly formed consumed hydrogen absorption/desorption processes. Chemical reactions proposed for absorption desorption, accordingly. formation solid solutions is assumed based on structure...

Abstract To suppress the dendrite formation and alleviate volume expansion upon striping/platting is a key challenge for developing practical lithium metal anodes. Lithium in powder form possesses great potential to address this issue due large specific surface area. However, fabrication of powdery metallic largely restricted because its unique softness, stickiness, high reactivity. Here, safe readily accessible cryomilling process toward powders reported. Nanoscaled (&lt;500 nm) are...