Novel clathrate materials for hydrogen storage: H_2 store in N_2 hydrate

摘要

In recent years, solid clathrate gas hydrates are considered to be promising materials for hydrogen storage because they can trap molecular hydrogen within their cages formed by a hydrogen-bond water network. In this paper, we firstly synthesized the nitrogen hydrates, and then used these hydrates for hydrogen storage. The H_2 storage potential in these hydrates is investigated by Raman spectrometry technique. The spectral properties show that the multiple H_2 occupancies of large cages of N_2 hydrates have been realized under mild condition (16 MPa and 255 K) when exposing N_2 hydrates in pressurized H_2 gas. The results suggest that nitrogen clathrate hydrates are prospective media for H_2 storage and may help to design and produce new hydrogen storage materials.