Enhanced hydrogen desorption properties of MgH2 by highly dispersed Ni: The role of in-situ hydrogenolysis of nickelocene in ball milling process

2021 ◽  
pp. 163547
Author(s):  
Cong Peng ◽  
Yongtao Li ◽  
Qingan Zhang
Keyword(s):  
Ball Milling ◽  
Hydrogen Desorption ◽  
Milling Process ◽  
Ball Milling Process ◽  
Highly Dispersed

Hydrogen Desorption Reactions of the Na-Mg-B-H System

2010 ◽  
Vol 72 ◽  
pp. 164-169 ◽  
Author(s):  
Daphiny Pottmaier ◽  
Sebastiano Garroni ◽  
Maria Dolors Barò ◽  
Marcello Baricco
Keyword(s):  
Solid State ◽  
Research And Development ◽  
Ball Milling ◽  
Powder Diffraction ◽  
Hydrogen Desorption ◽  
X Ray ◽  
New Compounds ◽  
Desorption Reaction

Hydrogen storage in the solid state has shown increasing research and development, and recently an approach in mixing two hydride systems together by ball milling (reactive hydride composites) has been investigated in more detail, e.g. NaBH4 plus MgH2. Thermodynamic destabilization may occur by new compounds formation during dehydrogenation, e.g. MgB2. A study of the the role of O2/H2O contamination for the reaction 2NaBH4 + MgH2 ↔ 2NaH + MgB2 + 4H2 was conducted using in-situ X-ray powder diffraction. Desorption reaction is observed to begin by a competition of MgH2 and NaBH4 decomposition due to higher reactivity promoted by ball milling processing summed to O2/H2O contamination. Oxidation of NaBH4 into NaBO2 is observed to happen in higher degree than MgH2/Mg into MgO for the Na-Mg-B-H system.

The Study of Hydrogen Sorption Properties of Mg17Al12La0.45

2011 ◽  
Vol 311-313 ◽  
pp. 1351-1356
Author(s):  
Li Juan Pang ◽  
Yun Gui Chen ◽  
Chao Ling Wu ◽  
Xue Feng Zhang ◽  
Gang Deng
Keyword(s):  
Ball Milling ◽  
Hydrogen Desorption ◽  
High Energy ◽  
Milling Process ◽  
High Energy Ball Milling ◽  
Sorption Properties ◽  
Hydrogen Sorption ◽  
Ball Milling Process ◽  
Energy Ball ◽  
Ball Milling Technique

Mg17Al12and rare earth improved Mg17Al12La0.45alloys were prepared by resistance melting method. The hydrogen sorption properties of the alloys with and without ball-milling process were investigated with the help of PCT measurements. The phase compositions of the experimental alloys were determined through powder X-Ray diffraction. It is found that the introduction of La and the high energy ball-milling technique could remarkably improve the hydrogen sorption capability of Mg17Al12. For Mg17Al12La0.45alloy, the hydrogen absorption starts at 473K and the hydridying rate increases at each temperature (573K, 523K, 473K) after high energy ball-milling process. The hydrogen desorption capacity of this alloy is 4wt% at 573K. XRD shows that there are two phases Mg17Al12and Al2La0.15Mg0.85after melting and Al2La0.15Mg0.85phase always exists during hydrogen sorption cycles of Mg17Al12La0.45.

scholarly journals Effect of Ball Milling Process on the in Situ Synthesis of Nano-TiB Whiskers

2016 ◽  
Vol 45 (5) ◽  
pp. 1157-1161 ◽  
Author(s):  
Liu Liping ◽  
Liu Yongbing ◽  
Ji Lianfeng ◽  
Cao Zhanyi ◽  
Yang Xiaohong
Keyword(s):  
Ball Milling ◽  
Milling Process ◽  
In Situ Synthesis ◽  
Ball Milling Process

The Impact of Ball Milling Process Parameters on the Preparation of Nano Silicon Powder

2021 ◽  
Vol 217 (1) ◽  
pp. 255-264
Author(s):  
Xiaomeng Zhu ◽  
Xiaolan Cai ◽  
Shuang Zhang ◽  
Lei Wang ◽  
Xudong Cui
Keyword(s):  
Ball Milling ◽  
Process Parameters ◽  
Silicon Powder ◽  
Milling Process ◽  
Ball Milling Process ◽  
Nano Silicon ◽  
The Impact

Superthermostability of nanoscale TIC-reinforced copper alloys manufactured by a two-step ball-milling process

2015 ◽  
Vol 95 (35) ◽  
pp. 4035-4053 ◽  
Author(s):  
Fenglin Wang ◽  
Yunping Li ◽  
Xiandong Xu ◽  
Yuichiro Koizumi ◽  
Kenta Yamanaka ◽  
...  
Keyword(s):  
Ball Milling ◽  
Copper Alloys ◽  
Milling Process ◽  
Ball Milling Process

Scalable synthesis of silicon nanoplate-decorated graphite toward advanced lithium-ion battery anodes

Nanoscale ◽  
2021 ◽  
Author(s):  
Haimei Li ◽  
Xianglong Li ◽  
Denghui Wang ◽  
Siyuan Zhang ◽  
Wenqiang Xu ◽  
...  
Keyword(s):  
Lithium Ion Battery ◽  
Ball Milling ◽  
Lithium Battery ◽  
High Capacity ◽  
Lithium Ion ◽  
Milling Process ◽  
Cyclic Stability ◽  
Graphite Electrodes ◽  
Ball Milling Process ◽  
Scalable Synthesis

A silicon nanoplate-decorated graphite design is developed for lithium battery anodes via a simple ball milling process. The resultant silicon-graphite electrodes show high cyclic stability with high capacity, superior rate...

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