Graphene oxide-based mesoporous calcium silicate hydrate sandwich-like structure: synthesis and application for thermal energy storage

Ezzatollah Shamsaei, Felipe Basquiroto De Souza, Amirsina Fouladi, Kwesi Sagoe-Crentsil, Wenhui Duan

Research output: Contribution to journalArticleResearchpeer-review

1 Citation (Scopus)

Abstract

In this study, we designed a mesoporous composite with high latent heat capacity, stable structure, and efficient thermal response for thermal energy storage in green building constructions. Graphene oxide (GO) nanosheets were sandwiched by a vertically interconnected network of two-dimensional (2D) calcium silicate hydrate (CSH) nanoplates via an in situ dissolution-coprecipitation strategy to obtain CSH/GO/CSH (CGC). The CGC mesoporous sandwich-like structures with a high specific surface area (677 m2 g-1) and a large pore volume (∼2.5 cm3 g-1) were infiltrated with lauric acid (LA) as phase change materials (PCMs) to produce LA@CGC composites. Our results demonstrated that LA@CGC had a high latent heat value of 118.0-127.6 J g-1 and 92-99% efficiency after 50 heating-cooling cycles, which, together with the reinforcing properties of GO and the compatibility of CSH in cement-based matrixes, makes the composite a sustainable PCM for thermal energy storage in building constructions.

Original languageEnglish
Pages (from-to)958-969
Number of pages12
JournalACS Applied Energy Materials
Volume5
Issue number1
DOIs
Publication statusPublished - 4 Jan 2022

Keywords

  • calcium silicate hydrate
  • graphene oxide
  • phase change materials
  • sandwich-like composites
  • thermal energy storage

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