Presentation Information
[3F16]Evaluation of hydrogen desorption and absorption properties of MgH2-Ni/HB composites by DSC under hydrogen pressure
*Natsumi Noguchi1, Kazuho Goto1, Shin-ichi Ito2, Kouji Sakaki3, Kohta Asano3, Takeshi Fujita4, Hideo Hosono5,6, Shin-ichi Orimo7,8, Takahiro Kondo2,7 (1. Graduate School of Pure and Applied Sciences, University of Tsukuba, 2. Department of Materials Science and Tsukuba Research Center for Energy Materials Science, Institute of Pure and Applied Sciences, University of Tsukuba, 3. National Institute of Advanced Industrial Science and Technology, 4. School of Environmental Science and Engineering, Kochi University of Technology, 5. Materials Research Center for Element Strategy, Tokyo Institute of Technology, 6. Research Center for Material Nanoarchitectonics, National Institute for Material Science, 7. The Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, 8. Institute for Materials Research (IMR), Tohoku University)
Carbon neutrality, aiming for zero greenhouse gas emissions and reducing fossil fuel dependence, is a global trend. Renewable energy is advancing rapidly, but stable supply is still challenging. Hydrogen energy offers a solution by conserving, storing, and transporting energy. MgH2 is promising for hydrogen storage due to Mg's abundance, and high hydrogen density (7.6wt%). Challenges include slow hydrogen desorption and high temperatures needed during the utilization of hydrogen. Ni catalysts on two-dimensional materials improve the performance of MgH2. In this study, MgH2-Ni/HB composites were synthesized by ball milling MgH2 with nano-sized Ni supported hydrogen boride sheets (Ni/HB). DSC (differential scanning calorimetry) was performed under several hydrogen pressures. The result shows that the profiles of the first and fourth cycles were almost the same in the continuous measurement. We will provide detailed discussions in the presentation