Thermally Regenerative CO2-Induced pH-Gradient Cell for Waste-to-Energy Conversion

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

2 Scopus Citations
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Author(s)

  • Chun Cheng
  • Sijia Wang
  • Yifan Wu
  • Idris Temitope Bello
  • Yawen Dai
  • Rui Cheng
  • Shuo Zhai
  • Yifei Wang
  • Meng Ni

Detail(s)

Original languageEnglish
Pages (from-to)3221-3227
Journal / PublicationACS Energy Letters
Volume6
Issue number9
Online published23 Aug 2021
Publication statusPublished - 10 Sep 2021
Externally publishedYes

Abstract

Current primary energy generation systems produce a significant amount of waste CO2 and low-grade heat which consequently have a significant negative impact on the global climate and environment. In contrast to current carbon capture and storage (CCS) technologies which require external input energy or mass to extract and store the waste without efficient utilization, this study proposes a thermally regenerative CO2-induced pH-gradient cell (TRCPC) that simultaneously utilizes CO2 and low-grade heat for waste-to-electricity conversion. CO2 is absorbed in one side of the symmetric electrolyte and causes a change in pH of the cell to induce voltage generation, achieving a peak power density of 0.578 Wm-2. After discharging, the system can be regenerated using low-grade heat while the CO2 can then be stored and transported. This research proposes a promising method with economic and environmental benefits that converts CO2 and waste heat into electricity before further CO2 storage.

Citation Format(s)

Thermally Regenerative CO2-Induced pH-Gradient Cell for Waste-to-Energy Conversion. / Cheng, Chun; Wang, Sijia; Wu, Yifan et al.

In: ACS Energy Letters, Vol. 6, No. 9, 10.09.2021, p. 3221-3227.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review