2020 年 63 巻 7 号 p. 352-357
Recently, we have revealed that the hydrogen boride (HB) sheets can be formed by exfoliation and complete ion-exchange between protons and magnesium cations in magnesium diboride (MgB2+2H+ → Mg2++2HB) at room temperature and ambient pressure. We have then found that the hydrogen molecules (H2) can be released from HB by the UV irradiation as much as 8 wt% at room temperature.