Sepiolite Nanocarriers as a Matrix for Controlled Thermal Energy Storage

Zhu, Xiaolei, Vinokurov, Vladimir, Kopitsyn, Dmitry and Shchukin, Dmitry G ORCID: 0000-0002-2936-804X
(2021) Sepiolite Nanocarriers as a Matrix for Controlled Thermal Energy Storage. ACS OMEGA, 6 (39). pp. 25828-25834.

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Applying the eutectic hydrated salt (EHS) mixture of Na<sub>2</sub>HPO<sub>4</sub>·12H<sub>2</sub>O and Na<sub>2</sub>SO<sub>4</sub>·10H<sub>2</sub>O in a 1:1 weight ratio as a phase-change material and natural sepiolite nanocarriers as a matrix, the form-stable phase-change composite EHS@sepiolite was fabricated by vacuum impregnation. Due to the high porosity of sepiolite and its nanofibrous structure with internal channels, the effective loading of the phase-change material reached as high as 88 wt %. The melting temperature of the composite was 38.1 °C and its melting enthalpy was 185 J g<sup>-1.</sup> The crystallinity of the hydrated salt mixture was retained after loading into the sepiolite matrix. The composite demonstrated high stability over 50 heat uptake/release cycles maintaining its melting temperature and melting enthalpy the same. The combination of natural sepiolite nanocarriers and crystallohydrates is a cheap and efficient nanoscale energy storage system with high potential for practical applications and upscaling because of their natural abundance.

Item Type: Article
Uncontrolled Keywords: Nanotechnology, Bioengineering, 7 Affordable and Clean Energy
Divisions: Faculty of Science and Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 09 Dec 2021 16:39
Last Modified: 17 Mar 2024 12:47
DOI: 10.1021/acsomega.1c04392
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