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海泡石纳米载体作为可控热能存储的基质

Sepiolite Nanocarriers as a Matrix for Controlled Thermal Energy Storage.

作者信息

Zhu Xiaolei, Vinokurov Vladimir, Kopitsyn Dmitry, Shchukin Dmitry G

机构信息

Stephenson Institute for Renewable Energy, University of Liverpool, Chadwick Building, Peach Street, Liverpool L69 7ZF, United Kingdom.

Gubkin University, 65/1 Leninsky Prospect, Moscow 119991, Russia.

出版信息

ACS Omega. 2021 Sep 20;6(39):25828-25834. doi: 10.1021/acsomega.1c04392. eCollection 2021 Oct 5.

DOI:10.1021/acsomega.1c04392
PMID:34632238
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8495839/
Abstract

Applying the eutectic hydrated salt (EHS) mixture of NaHPO·12HO and NaSO·10HO 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 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.

摘要

以重量比1:1的NaHPO·12HO和NaSO·10HO的低共熔水合盐（EHS）混合物作为相变材料，天然海泡石纳米载体作为基质，通过真空浸渍法制备了形状稳定的相变复合材料EHS@海泡石。由于海泡石的高孔隙率及其具有内部通道的纳米纤维结构，相变材料的有效负载量高达88 wt%。该复合材料的熔点为38.1℃，熔化焓为185 J g。水合盐混合物负载到海泡石基质后，其结晶度得以保留。该复合材料在50次吸/放热循环中表现出高稳定性，其熔点和熔化焓保持不变。天然海泡石纳米载体和结晶水合物的结合是一种廉价且高效的纳米级储能系统，由于它们的天然丰富性，具有很高的实际应用和扩大规模的潜力。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b7c/8495839/03623a334918/ao1c04392_0012.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b7c/8495839/b8348f535276/ao1c04392_0006.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b7c/8495839/03623a334918/ao1c04392_0012.jpg

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