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Energies 2017, 10(5), 644; doi:10.3390/en10050644

Effect of Carbon Nanoadditives on Lithium Hydroxide Monohydrate-Based Composite Materials for Low Temperature Chemical Heat Storage

1
Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, No. 2 Nengyuan Rd., Wushan, Tianhe District, Guangzhou 510640, China
2
University of Chinese Academy of Sciences, Beijing 100049, China
3
Department of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya-shi, Aichi 464-8603, Japan
These two authors contribute equally to this work.
*
Author to whom correspondence should be addressed.
Academic Editor: Rui Xiong
Received: 5 April 2017 / Revised: 2 May 2017 / Accepted: 3 May 2017 / Published: 6 May 2017
(This article belongs to the Special Issue Thermal Energy Storage and Thermal Management (TESM2017))
View Full-Text   |   Download PDF [2824 KB, uploaded 6 May 2017]   |  

Abstract

Carbon nanospheres (CNSs) and multi-walled carbon nanotubes (MWCNTs) as nanoadditives were used to modify lithium hydroxide monohydrate for low temperature chemical heat storage application. The lithium hydroxide monohydrate particles were well dispersed on the nanoscale level, and the diameter of nanoparticles was about 20–30 nm in the case of the carbon nanospheres and 50–100 nm the case of the MWCNTs, as shown by transmission electron microscopy characterization results. X-ray diffraction results indicated that the LiOH·H2O-carbon nano thermochemical composite materials were successfully synthesized. The thermochemical composite materials LiOH·H2O/CNSs (2020 kJ/kg), LiOH·H2O/MWCNTs (1804 kJ/kg), and LiOH·H2O/AC (1236 kJ/kg) exhibited obviously improved heat storage density and higher hydration rate than pure LiOH·H2O (661 kJ/kg), which was shown by thermogravimetric and differential scanning calorimetric (TG-DSC) analysis. It appears that nanocarbon-modified lithium hydroxide monohydrate thermochemical composite materials have a huge potential for the application of low temperature chemical heat storage. View Full-Text
Keywords: nanoparticles; energy storage and conversion; lithium hydroxide monohydrate; carbon nanoadditives nanoparticles; energy storage and conversion; lithium hydroxide monohydrate; carbon nanoadditives
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Yang, X.; Li, S.; Huang, H.; Li, J.; Kobayashi, N.; Kubota, M. Effect of Carbon Nanoadditives on Lithium Hydroxide Monohydrate-Based Composite Materials for Low Temperature Chemical Heat Storage. Energies 2017, 10, 644.

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