Enhanced figure of merit of cement composites with graphene and ZnO nanoinclusions for efficient energy harvesting in buildings

Sampad Ghosh, Sivasankaran Harish, Michitaka Ohtaki, Bidyut Baran Saha

研究成果: ジャーナルへの寄稿学術誌査読

25 被引用数 (Scopus)

抄録

In this work, we have reported the thermoelectric performance of graphene-zinc oxide hybrid cement composites for the first time. Nanostructured graphene and zinc oxide were incorporated into cement to increase the thermoelectric properties of cement composites. The as-received materials were blended, compressed, and subsequently cured at room temperature to make it bulk. On bulk samples, electrical conductivity, Seebeck coefficient, and thermal conductivity were measured. As a consequence of high electrical conductivity and the Seebeck coefficient, the composites exhibited a high value of thermoelectric efficiency. The maximum figure of merit (ZT) of 0.01 is obtained when the contents of graphene and ZnO are 10 wt%, respectively, by mass of cement. This ZT is the highest reported to date for the thermoelectric cement composites, a nearly 70% increase over the previous record with carbon based inclusions. High figure of merit is crucial for energy harvesting applications in future buildings.

本文言語英語
論文番号117396
ジャーナルEnergy
198
DOI
出版ステータス出版済み - 5月 1 2020

!!!All Science Journal Classification (ASJC) codes

  • 土木構造工学
  • 建築および建設
  • モデリングとシミュレーション
  • 再生可能エネルギー、持続可能性、環境
  • 燃料技術
  • エネルギー工学および電力技術
  • 汚染
  • エネルギー(全般)
  • 機械工学
  • 産業および生産工学
  • マネジメント、モニタリング、政策と法律
  • 電子工学および電気工学

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