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BY-NC-ND 3.0 license Open Access Published by De Gruyter Open Access November 20, 2014

Preparation of Nano-Composite Ca2αZnα(OH)4 with High Thermal Storage Capacity and Improved Recovery of Stored Heat Energy

M. Zheng, S.M. Sun, J. Hu, Y. Zhao and L. J. Yu
From the journal Open Engineering


Thermal energy storage has very important prospects in many applications related to the use of renewable energies (solar energy, etc.) or other energy sources, such as waste heat from industrial processes. Thermochemical storage is very attractive for long-term storage, since it could be conducted at room temperature without energy losses. In the present paper, a novel nanocomposite material, Ca2αZnα(OH)4, is prepared using coprecipitation methodology and is characterized by XRD and DSC tests. The XRD result shows that the grain size of the nano-composite ranges from 40 nm to 95 nm. The DSC test result shows that the nano-composite exhibits high thermal storage capacity: 764.5 J/g at α = 0.8555. Its thermal decomposition temperature was found to be approximately 180º. Itwas found possible to recover 63.25% of the stored heat energy.


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Received: 2014-5-25
Accepted: 2014-8-28
Published Online: 2014-11-20

©2015 M. Zheng et al.

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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