Nonlinear dynamic analysis and structural optimization design of Ni/Mg modified single wall carbon nanotube for hydrogen storage

Abstract

The combustion calorific value of hydrogen is three times of gasoline and the burning product of hydrogen is water, which makes hydrogen the representative of clean energy. The hollow part of single-walled carbon nanotube (SWNT) is an excellent container space, which has great potential as hydrogen storage materials. This paper considers the micro-scale effect of SWNT based on Eringen's nonlocal elastic theory, and constructs a nanobeam model and analyzes the nonlinear dynamic characteristics. Based on these, the effects of different modification components on hydrogen storage properties of SWNT is discussed. The analysis exhibits that different modification positions also have a great influence on the hydrogen storage efficiency. The results of theoretical analysis and numerical simulation show that the modification components' optimization plays a certain role in improving the hydrogen storage efficiency of SWNT. The maximum increase hydrogen storage efficiency can be 12.7% by selecting appropriate decorative elements and appropriate positions.