Discovery of Rapid and Reversible Water Insertion in Rare Earth Sulfates: A New Process for Thermochemical Heat Storage
- Resource Type
- Authors
- Tetsuya Uda; Kunihiko Shizume; Naoyuki Hatada
- Source
- Advanced Materials. 29:1606569
- Subject
- Materials science
business.industry
020209 energy
Mechanical Engineering
Thermodynamics
02 engineering and technology
Atmospheric temperature range
021001 nanoscience & nanotechnology
Solar energy
Thermal energy storage
medicine.disease
Chemical reaction
Reversible reaction
Thermogravimetry
Chemical engineering
Mechanics of Materials
Waste heat
0202 electrical engineering, electronic engineering, information engineering
medicine
General Materials Science
Dehydration
0210 nano-technology
business
- Language
- ISSN
- 0935-9648
Thermal energy storage based on chemical reactions is a prospective technology for the reduction of fossil-fuel consumption by storing and using waste heat. For widespread application, a critical challenge is to identify appropriate reversible reactions that occur below 250 °C, where abundant low-grade waste heat and solar energy might be available. Here, it is shown that lanthanum sulfate monohydrate La2 (SO4 )3 ⋅H2 O undergoes rapid and reversible dehydration/hydration reactions in the temperature range from 50 to 250 °C upon heating/cooling with remarkably small thermal hysteresis (