Thermal energy storage has good application prospects. Thermochemical storage is one of the interesting methods for long-term storage as it can store energy at room temperature without any loss. This experiment investigates a method to synthesize expanded graphite-based CaxZny(OH)2(x + y) in ammonia (NH3)/ammonium chloride (NH4Cl) solution for solar energy storage. Scanning electron microscopy, thermal gravimetric analysis and X-ray diffraction are used to characterize the properties of the material. The results show that calcium hydroxide (Ca(OH)2) and zinc hydroxide (Zn(OH)2) in the expanded graphite composite are disposed at the nanolevel. Specifically, the crystal size of composite material ranges from 29·9 to 47·3 nm. The structure of the expanded graphite that adsorbed the nanocomposite material of CaxZny(OH)2(x + y) is porous. Furthermore, the decomposition temperature of expanded graphite-based CaxZny(OH)2(x + y) was nearly 171·6°C, which will significantly and effectively improve the reaction rate of thermal decomposition.
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Research Article|
November 26 2015
Synthesis of nanocomposite CaxZny(OH)2(x + y) as thermochemical storage material Available to Purchase
Jun Hu;
Jun Hu
*
Lecturer, Department of Process Equipment and Control Engineering, School of Chemical Engineering, Northwest University, Xi’an, China; Energy Transmission Technology and Applied Institute, Northwest University, Xi’an, China
*Corresponding author email address: hujun32456@163.com
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Shiming Sun;
Shiming Sun
Master Student, Department of Process Equipment and Control Engineering, School of Chemical Engineering, Northwest University, Xi’an, China
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Lijun Yu;
Lijun Yu
Professor, Department of Process Equipment and Control Engineering, School of Chemical Engineering, Northwest University, Xi’an, China
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Maosheng Zheng
Maosheng Zheng
Professor, Department of Process Equipment and Control Engineering, School of Chemical Engineering, Northwest University, Xi’an, China; Energy Transmission Technology and Applied Institute, Northwest University, Xi’an, China
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*Corresponding author email address: hujun32456@163.com
Publisher: Emerald Publishing
Received:
October 31 2014
Accepted:
November 24 2015
Online ISSN: 2045-984X
Print ISSN: 2045-9831
ICE Publishing: All rights reserved
2015
Nanomaterials and Energy (2015) 4 (2): 124–130.
Article history
Received:
October 31 2014
Accepted:
November 24 2015
Citation
Hu J, Sun S, Yu L, Zheng M (2015), "Synthesis of nanocomposite CaxZny(OH)2(x + y) as thermochemical storage material". Nanomaterials and Energy, Vol. 4 No. 2 pp. 124–130, doi: https://doi.org/10.1680/jnaen.14.00028
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