Thermochemical Energy Storage by LiNO3-Doped Mg(OH)2: Rehydration Study | Sciact - CRIS-system of Boreskov Institute of Catalysis

Thermochemical Energy Storage by LiNO3-Doped Mg(OH)2: Rehydration Study Full article

Journal

Journal of Energy Storage
ISSN: 2352-152X

Output data

Year: 2019, Volume: 22, Pages: 302-310 Pages count : 9 DOI: 10.1016/j.est.2019.01.014

Tags

Thermochemical energy storage; Rehydration kinetics; Magnesium oxide; Magnesium hydroxide; Salt additive; Cyclic stability

Authors

Shkatulov Alexandr ^1,2 , Takasu Hiroki ³ , Kato Yukitaka ⁴ , Aristov Yuri ^1,4

Affiliations

1	Boreskov Institute of Catalysis, Ac. Lavrentieva Av. 5, Novosibirsk, 630090, Russia
2	Novosibirsk State University, Pirogova Str. 2, Novosibirsk, 630090, Russia
3	Graduate Major in Nuclear Engineering, Tokyo Institute of Technology, 2-12-1-N1-22, Ookayama, Meguro-ku, Tokyo 152-8550, Japan
4	Laboratory for Advanced Nuclear Energy, Institute of Innovative Research, Tokyo Institute of Technology, 2-12-1-N1-22, Ookayama, Meguro-ku, Tokyo 152-8550, Japan

Funding (1)

Tokyo Institute of Technology

Tokyo Tech World Research Hub Initiative (WRHI) Program

Thermochemical energy storage (TCES) is an emerging technology promising for reuse of industrial waste heat and harvesting solar energy. Recently, a novel material, namely, a magnesium hydroxide doped with lithium nitrate LiNO3/Mg(OH)2, was suggested for TCES at temperature lower than 300 °C [1]. The LiNO3 additive to Mg(OH)2 was found to decrease the Mg(OH)2 dehydration temperature by 76 °C which, to the best of our knowledge, is the largest depression reported in the literature so far. The large heat storage capacity (1250 J/g) and fast dehydration made this material promising for TCES. In this work, the LiNO3/Mg(OH)2 is studied with a focus on the reverse reaction of its hydration by water vapour which allows the stored heat to be released. The rehydration kinetics is studied at various temperatures (90–150 °C), water vapour pressures (16.7–33.5 kPa), and LiNO3 contents (0.5–20 wt.%) to outline the boundary conditions of closed TCES cycle for which this material may be used. The material is found to be stable in ten successive de-/rehydration cycles. Finally, the applicability of the material for storage of heat from some particular heat sources is discussed.

Shkatulov A. , Takasu H. , Kato Y. , Aristov Y.
Thermochemical Energy Storage by LiNO3-Doped Mg(OH)2: Rehydration Study
Journal of Energy Storage. 2019. V.22. P.302-310. DOI: 10.1016/j.est.2019.01.014 WOS Scopus РИНЦ OpenAlex

Submitted:	Oct 1, 2018
Accepted:	Jan 15, 2019
Published online:	Mar 1, 2019
Published print:	Apr 1, 2019

Web of science:	WOS:000462506300032
Scopus:	2-s2.0-85062233673
Elibrary:	38694627
OpenAlex:	W2920269042

DB	Citing
Scopus	23
Web of science	23
Elibrary	20
OpenAlex	24