Nagoya University · 공학
미쓰히로 Kubota 교수의 연구실은 고온 열에너지 저장 및 수소 운반 기술을 핵심으로 삼고 있으며, 칼슘 산화물/탄산칼슘 반응을 활용한 고온 열 저장 시스템과 암모니아를 이용한 안정적 수소 저장 기술을 개발하고 있습니다. 또한 구리 기반 스파이널 및 델라포시트 계 화합물, 염화마그네슘-에리트리톨 복합 PCM 등을 활용한 중고온도 열화학적 에너지 저장 소재의 설계 및 특성 분석을 수행하고 있습니다. 연구는 열역학적 안정성, 반응 동역학, 스케일업 가능성을 고려한 실용적 응용을 목표로 하고 있습니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
In order to develop a high temperature heat storage and temperature upgrading system using the CaO/CaCO3 reaction, decarbonation of CaCO3 has been carried out with thermogravimetry in the ranges of 1073–1193 K and 3–55 kPa.Calcium carbonate virtually did not decompose under the condition where the partial pressure of CO2, P, is higher than half of the equilibrium decomposition pressure of CaCO3, Pe. It implies that the present heat storage system has to be operated in pressure regions lower than
Ammonia has attracted great attention as a hydrogen carrier owing to its high hydrogen content of 17.8 wt%. However, a high pressure of approximately 1 MPa is required to store NH3 in its liquid state at room temperature. The toxicity of ammonia has raised a great deal of concern about leakage from the storage vessel to the ambient atmosphere. To solve this problem, we have focused on absorption and desorption reactions of ammonia with metal chlorides. Some metal chlorides can store NH3 in the f
Cu-based spinel/delafossite couples with Mn and Fe as second cations were synthesized using the Pechini method for medium-high temperature thermochemical energy storage. Physicochemical properties of each sample were investigated. Only CuMn2O4/CuMnO2 exhibited favorable redox behavior in the range of 500–1000 °C. Cu-based delafossite can reoxidize at a lower temperature (∼600 °C), which may be related to the existence of a MO6 octahedra structure. Through the isothermal oxidation method, CuMn2O4
