Synthesis and surface engineering of iron oxide nanoparticles for biomedical applications

Metal hydride materials for solid hydrogen storage: a review

Potential importance of hydrogen as a future solution to environmental and transportation problems

Hydrogen storage in Mg: A most promising material

This paper provides an insight to the feasibility of adopting hydrogen as a key energy carrier and fuel source in the near future. It is shown that hydrogen has several advantages, as well as few drawbacks in using for the above purposes. The research shows that hydrogen will be a key player in storing energy that is wasted at generation stage in large-scale power grids by off-peak diversion to dummy loads. The estimations show that by the year of 2050 there will be a hydrogen demand of over 42 million metric tons or 45 billion gallon gasoline equivalent (GGE) in the United States of America alone which can fuel up 342 million light-duty vehicles for 51 × 1011 miles (82 × 1011 km) travel per year. The production at distributed level has also been discussed. The paper also presents the levels of risk in production, storage and distribution stages and proposes possible techniques to address safety issues. It is shown that the storage in small to medium scale containers is much economical compared to doing the same at large-scale containers. The study concludes that hydrogen has a promising future to be a highly feasible energy carrier and energy source itself at consumer level.

/pdf/hydrogen-as-an-energy-carrier-prospects-and-challenges-1ykjitdmy8.pdf

Hydrogen as an energy carrier: Prospects and challenges

TbMn6-xTixSn6 compounds with x = 0, 0.5, 1.0, 1.5 and 2.0 have been studied in this paper. All compounds crystallize in the HfFe6Ge6-type structure (space group, P6/mmm). The substitution of Ti for Mn in TbMn6Sn6 results in a linear increase in the lattice constants and the unit-cell volume from a = 5.531 Angstrom, c = 9.025 Angstrom and V = 239.10 Angstrom(3) at x = 0, to a = 5.588 Angstrom, c = 9.150 Angstrom and V = 247.44 Angstrom(3) at x = 2.0. The ordering temperature and the reorientation temperature of the easy axis of these compounds decrease monotonically with Ti content from 423 K and 330 K at x = 0 to 362 K and 285 K at x = 2.0. In thermal magnetic curves a new transition was found at the temperature T-f at which the magnetization begin to increase and T-f increases from 37 K at x = 0 to 150 K at x = 2.0. The saturation magnetization at room temperature decreases linearly with increasing Ti content. The magnetization curves at 1.5 K in fields up to 70 kOe are given and the magnetization values at 1.5 K are derived from them.

http://maglab.iphy.ac.cn/M05Website/PDF/2004/JPD19(2004)2632.pdf

Changpin Chen

Papers

Structure and magnetic properties of

An investigation on the reaction mechanism of LiAlH4–MgH2 hydrogen storage system

Hydrogen storage alloys for high-pressure suprapure hydrogen compressor

A study on 70 MPa metal hydride hydrogen compressor

Studies on the electrochemical properties of MlNi4.3-xCoxAl0.7 hydride alloy electrodes