Development of Heat Storage Materials Utilizing Gas Adsorption on Oxide Nanoparticles

2015 Fiscal Year Final Research Report

• Project/Area Number: 26630342
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Structural/Functional materials
• Research Institution: Tohoku University
• Principal Investigator: TAKAMURA Hitoshi 東北大学, 工学(系)研究科(研究院), 教授 (30250715)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Keywords: ナノ粒子 / 蓄熱材料 / 水蒸気吸着 / 潜熱利用

Outline of Final Research Achievements

A possibility of heat storage materials based on water vapor adsorption on CeO2 nanoparticles has been examined in this study. The CeO2 nanoparticles were prepared by UV-laser irradiation technique. The primary and secondary particle size of CeO2 prepared were estimated to be 3.55 and 8.97 nm, respectively. The amount of water-vapor adsorbed on the CeO2 nanoparticles were 50 cm3/g under p/p0 = 0.4 at 25 degC. Based on this value, their heat storage capacity was calculated to be 165 J/g (0.17 MJ/kg). This capacity can be further improved by using light-weight oxide nanoparticles. The performance as a heat storage device was evaluated by measuring temperature change along with introduction water vapor; the increase in temperature by 0.5 degC was confirmed for approximately 1 h.

Free Research Field

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