Porous pyroelectric ceramic with carbon nanotubes for high-performance thermal to electrical energy conversion

Qingping Wang, Shihua He, Chris R. Bowen, Xiao Xiao, Jin An Sam Oh, Jianguo Sun, Kaiyang Zeng, Wen Lei, Jun Chen

Research output: Contribution to journalArticlepeer-review

3 Citations (SciVal)
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The recycling of low-grade thermal energy from our surroundings is an environmental-friendly approach to contribute to sustainability, which remains a grand challenge. Herein, a high-performance porous pyroelectric ceramic formed using carbon nanotubes (CNT) is designed and fabricated using a modified solid-state reaction technique. Localized characterization of PMN-PMS-PZT and PMN-PMS-PZT with 0.3 wt% CNT additions by piezoelectric force microscopy suggests that the presence of porosity and defects in grains can restrict the reversal of domains and weaken the local piezoresponse; that is due to the influence of porosity on the electric field, domain morphology, or screening effects induced by defects at the pore surface. More importantly, the porous ceramics showed enhanced figure of merits, including voltage responsibility and energy harvesting figure of merit, compared to the dense ceramic. The harvested energy increased by 208% when the 0.3 wt% of CNT was added to produce porosity, which has a potential application in thermal energy harvesting and sensing system.

Original languageEnglish
Article number107703
JournalNano Energy
Early online date18 Aug 2022
Publication statusPublished - 30 Nov 2022


  • CNT
  • FOMs
  • PFM
  • Porous pyroelectric ceramic
  • Pyroelectricity
  • Thermal energy harvesting

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)
  • Electrical and Electronic Engineering


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