Presentation Information
[2F07]Synthesis of Sodium-doped Hydrogen Boride NanosheetsUsing Titrimetric Neutralization Reaction
*Shohei Shimozato1, Miwa Hikichi2, Shin-ichi Ito2, Natsumi Noguchi1, Yukihiro Yasuda1, Kosuke Takeshita1, Kazuki Yamaguchi3, Iwao Matsuda3, Shin-ichi Orimo4,5, Ryuki Tsuji2,6, Osamu Oki2,6, Takahiro Kondo2,4,6 (1. Graduate School of Pure and Applied Sciences, University of Tsukuba, 2. Department of Materials Science, Institute of Pure and Applied Sciences, University of Tsukuba, 3. Institute for Solid State Physics, The University of Tokyo, 4. Advanced Institute for Materials Research, Tohoku University, 5. Institute for Material Research, Tohoku University, 6. Hydrogen Boride Research Center, Tsukuba Advanced Research Institute, University of Tsukuba)
Recently, lightweight hydrogen storage materials are needed for efficient transportation and storage. Hydrogen Boride (HB) nanosheets are lightweight materials and consist of BH groups at the sheet edges and BHB groups located inside the sheet. It has been reported that HB releases H+ in H2O, leading to a decrease in pH. Furthermore, theoretical predictions suggest that Na-doped HB, where Na replaces H in a one-to-one substitution, exhibits high H2 storage performance. In this study, to replace H with Na in the HB structure, we newly developed an ion-exchange method using a neutralization reaction. To analyze the structure of Na-doped HB, various measurements were conducted. It was suggested that Na-doped HB was synthesized as predicted theoretically and Na was introduced into the BHB groups near the BH groups (edge) region. Moreover, preliminary measurements confirmed that Na-doped HB exhibited higher hydrogen storage performance than pure HB.