[11a-Z29-1~15] 17.3 Layered materials

[11a-Z29-11] Synthesis and evaluation of carbon-doped HB sheets with controlled dopant amount

〇Riku Kawamura¹, Yoshitaka Fujimoto², Ryota Ishibiki¹, Taiga Goto¹, Shin-ichi Ito^1,2, Takeshi Fujita³, Tomoharu Tokunaga⁴, Masahiro Miyauchi², Soshi Iimura², Akiyasu Yamamoto⁵, Susumu Saito², Hideo Hosono², Takahiro Kondo^1,2 (1.Tsukuba Univ., 2.Tokyo Tech., 3.Kouchi Uni. Tech., 4.Nagoya Univ., 5.TAT)

Keywords:nano sheet, boron, layered material

We have revealed that the hydrogen boride (HB) sheet can be synthesized by ion-exchange in magnesium diboride (MgB₂). HB sheets release their hydrogen as H₂ molecules by heating in a wide temperature range. Theoretical calculations have reported that the bond between H and B weakens due to electron doping, so the hydrogen desorption temperature can be expected to be lowered by the electron doping. In this work, we synthesized and evaluated carbon doped (C-doped) HB sheets by using C-doped MgB₂ as a starting material.