scholarly journals A novel Ce0.8Fe0.1Zr0.1O2 solid solution with high catalytic activity for hydrogen storage in MgH2

RSC Advances ◽  
2021 ◽  
Vol 11 (60) ◽  
pp. 37677-37683
Author(s):  
Ying Cheng ◽  
Shuhua Zhou ◽  
Biqing Shi ◽  
Bing Dong ◽  
Xianbin Ji ◽  
...  
Keyword(s):  
Solid Solution ◽  
Catalytic Activity ◽  
Hydrogen Storage ◽  
High Catalytic Activity ◽  
Dissociation Temperature

The MgH2–Ce0.8Fe0.1Zr0.1O2 onset dissociation temperature was 82 K lower than that of MgH2.

A novel solid-solution MXene (Ti0.5V0.5)3C2 with high catalytic activity for hydrogen storage in MgH2

Materialia ◽  
2018 ◽  
Vol 1 ◽  
pp. 114-120 ◽  
Author(s):  
Zhengyang Shen ◽  
Zeyi Wang ◽  
Min Zhang ◽  
Mingxia Gao ◽  
Jianjiang Hu ◽  
...  
Keyword(s):  
Solid Solution ◽  
Catalytic Activity ◽  
Hydrogen Storage ◽  
High Catalytic Activity

In situ formed ultrafine NbTi nanocrystals from a NbTiC solid-solution MXene for hydrogen storage in MgH2

2019 ◽  
Vol 7 (23) ◽  
pp. 14244-14252 ◽  
Author(s):  
Zeyi Wang ◽  
Xuelian Zhang ◽  
Zhuanghe Ren ◽  
Yong Liu ◽  
Jianjiang Hu ◽  
...  
Keyword(s):  
Solid Solution ◽  
Catalytic Activity ◽  
Hydrogen Storage

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

The Effect of AlCl3 and Ti on Hydrogen Storage Performance of 4MgH2-Li3AlH6 System

2016 ◽  
Vol 852 ◽  
pp. 876-882
Author(s):  
Fang Yu ◽  
Fen Xu ◽  
Li Xian Sun ◽  
Xiang Fei Zhang ◽  
Lin Wang ◽  
...  
Keyword(s):  
Activation Energy ◽  
Catalytic Activity ◽  
Hydrogen Storage ◽  
Onset Temperature ◽  
High Catalytic Activity ◽  
Storage Performance ◽  
Preparation Conditions ◽  
Solid Ball ◽  
Hydrogen Storage Performance ◽  
Co Doped

The AlCl3/Ti co-doped 4MgH2-Li3AlH6 has been successfully synthesized using solid ball-milled method. The effect of AlCl3/Ti and different preparation conditions on reversible hydrogen storage of 4MgH2-Li3AlH6 were investigated. It was found that the formed Al3Ti and Al can improve the de/rehydriding performance. The onset temperature of the system dehydrogenation decreased to 58 °C, and it can release hydrogen of 7.2 wt.% at 400 °C. The hydriding of the system was found that the adsorption rate greatly increased from 0.02 to 0.35 wt.% min-1. The activation energy (Ea) of MgH2 dehydrogenation decreased from 147 to 113.7 kJ mol-1 by adding additive AlCl3 and Ti. The AlCl3/Ti improved the thermodynamic and kinetic performance of the 4MgH2-Li3AlH6 composite, which was attributed to the high catalytic activity of Al3Ti and Al.

Graphene-induced growth of N-doped niobium pentaoxide nanorods with high catalytic activity for hydrogen storage in MgH2

2021 ◽  
Vol 406 ◽  
pp. 126831
Author(s):  
Ke Wang ◽  
Xin Zhang ◽  
Yongfeng Liu ◽  
Zhuanghe Ren ◽  
Xuelian Zhang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Hydrogen Storage ◽  
High Catalytic Activity

Mesoporous Cr2O3–Phosphomolybdic Acid Solid Solution Frameworks with High Catalytic Activity

2011 ◽  
Vol 23 (18) ◽  
pp. 4204-4211 ◽  
Author(s):  
Ioannis Tamiolakis ◽  
Ioannis N. Lykakis ◽  
Alexandros P. Katsoulidis ◽  
Manolis Stratakis ◽  
Gerasimos S. Armatas
Keyword(s):  
Solid Solution ◽  
Catalytic Activity ◽  
Phosphomolybdic Acid ◽  
High Catalytic Activity

Vanadium oxide nanoparticles supported on cubic carbon nanoboxes as highly active catalyst precursors for hydrogen storage in MgH2

2018 ◽  
Vol 6 (33) ◽  
pp. 16177-16185 ◽  
Author(s):  
Zeyi Wang ◽  
Zhuanghe Ren ◽  
Ni Jian ◽  
Mingxia Gao ◽  
Jianjiang Hu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Hydrogen Storage ◽  
Vanadium Oxide ◽  
Active Catalyst ◽  
Oxide Nanoparticles ◽  
High Catalytic Activity ◽  
Highly Active

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

Enhanced catalytic activity of low-Pt content nanocatalysts supported on hollow carbon spheres for the ORR in alkaline media

MRS Advances ◽  
2020 ◽  
Vol 5 (57-58) ◽  
pp. 2961-2972
Author(s):  
P.C. Meléndez-González ◽  
E. Garza-Duran ◽  
J.C. Martínez-Loyola ◽  
P. Quintana-Owen ◽  
I.L. Alonso-Lemus ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Anion Exchange ◽  
Average Particle Size ◽  
Synthesis Method ◽  
Alkaline Media ◽  
High Catalytic Activity ◽  
Average Particle ◽  
Carbon Spheres ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres

In this work, low-Pt content nanocatalysts (≈ 5 wt. %) supported on Hollow Carbon Spheres (HCS) were synthesized by two routes: i) colloidal conventional polyol, and ii) surfactant-free Bromide Anion Exchange (BAE). The nanocatalysts were labelled as Pt/HCS-P and Pt/HCS-B for polyol and BAE, respectively. The physicochemical characterization of the nanocatalysts showed that by following both methods, a good control of chemical composition was achieved, obtaining in addition well dispersed nanoparticles of less than 3 nm TEM average particle size (d) on the HCS. Pt/HCS-B contained more Pt0 species than Pt/HCS-P, an effect of the synthesis method. In addition, the structure of the HCS remains more ordered after BAE synthesis, compared to polyol. Regarding the catalytic activity for the Oxygen Reduction Reaction (ORR) in 0.5 M KOH, Pt/HCS-P and Pt/HCS-B showed a similar performance in terms of current density (j) at 0.9 V vs. RHE than the benchmark commercial 20 wt. % Pt/C. However, Pt/HCS-P and Pt/HCS-B demonstrated a 6 and 5-fold increase in mass catalytic activity compared to Pt/C, respectively. A positive effect of the high specific surface area of the HCS and its interactions with metal nanoparticles and electrolyte, which promoted the mass transfer, increased the performance of Pt/HCS-P and Pt/HCS-B. The high catalytic activity showed by Pt/HCS-B and Pt/HCS-P for the ORR, even with a low-Pt content, make them promising cathode nanocatalysts for Anion Exchange Membrane Fuel Cells (AEMFC).

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