Palmarin Dansirima

• Doctor of Philosophy
• PostDoc Position at Aarhus University

Improvements of magnesium ionic conducting materials are important for the development of novel magnesium solid-state batteries. Here we investigate the effect of nanoconfinement of one of the most conductive magnesium electrolytes − the (Mg(BH4)2·NH3)x(Mg(BH4)2·2NH3)1−x composite. The synthesis of nanoconfined Mg(BH4)2·1.47NH3 in a mesoporous sili...

Correction for ‘Effects of Ni precursors on the formation of Mg–Fe–Ni intermetallic hydrides, kinetics, and reversibility’ by Palmarin Dansirima et al. , RSC Adv. , 2023, 13 , 16926–16934, https://doi.org/10.1039/D3RA01914D.

This work focuses on the effects of Ni precursors (metallic Ni or Mg2NiH4) on the formation of Mg-Fe-Ni intermetallic hydrides as well as their de/rehydrogenation kinetics and reversibility. After ball milling and sintering, the formation of Mg2FeH6 and Mg2NiH4 are found in both samples, while MgH2 is observed only in the sample with metallic Ni. B...

We report a systematic investigation of the effect that selected metal-based additives have on the dehydrogenation properties of the reactive hydride composite (RHC) model system 2NaBH4þMgH2. Compared to the pristine system, the material doped with 3TiCl3$AlCl3 exhibits superior dehydrogenation kinetics. The addition of 3TiCl3$AlCl3 alters the cont...

The most efficient electrical production from fuel cells integrated with hydride-based hydrogen storage tanks is obtained from suitable dehydrogenation kinetics, facilitating constant flow rate of hydrogen supply for a long period of time. Dehydrogenation kinetics of hydride-based tanks depends strongly on operating temperatures and system pressure...

The improvement of de/rehydrogenation kinetics and reversibility of a Mg–Ni–La based small hydrogen storage tank by doping with TiF4 and MWCNTs is reported for the first time. During sample preparation, MgH2 milled with 20 wt% LaNi5 and 5 wt% TiF4 and MWCNTs produces Mg2NiH4 and LaH3. Two-step dehydrogenation of Mg2NiH4 and MgH2 is detected at 295...

Kinetic properties of compacted LiNH2–LiH developed by doping with TiF4 and multi-walled nanotubes (MWCNTs) as well as upscaling to small hydrogen storage tank are proposed. During de/rehydrogenation, transition metal-based catalyst (TiF4) provides the catalytic effects on hydrogen dissociation/recombination, while MWCNTs benefit thermal conductivi...

Improvement of hydrogen sorption kinetics of MgH2–TiF4-MWCNTs based tank by addition of central tube heat exchanger and enhancement of hydrogen diffusion is proposed. After doping with TiF4 and MWCNTs, dehydrogenation temperature of MgH2 decreases significantly (ΔT = up to 90 °C). Superior hydrogen permeability, favoring hydrogen sorption kinetics...

De/rehydrogenation performances and reaction pathways of nanoconfined 2LiBH 4 –MgH 2 into activated carbon (AC) packed in small hydrogen storage tank are proposed for the first time. Total and material storage capacities upon five hydrogen release and uptake cycles are 3.56–4.55 and 2.03–3.28 wt % H 2 , respectively. Inferior hydrogen content to th...

MgH2 doped with transition metal halides (TiF4, NbF5, and ZrCl4) and activated carbon nanofibers (ACNF) for reversible hydrogen storage is prepared by ball milling technique. Transition metal halides provide catalytic effects for de/rehydrogenation kinetics, while ACNF benefits thermal conductivity and hydrogen permeability as well as prevents part...

By doping with 5 wt % TiF4 and activated carbon (AC), onset and main dehydrogenation temperatures of MgH2 significantly reduce (ΔT = 138 and 109 °C, respectively) with hydrogen capacity of 4.4 wt % H2. Up-scaling to storage tank begins with packing volume and sample weight of 28.8 mL and ∼14.5 g, respectively, and continues to 92.6 mL and ∼60.5–67...