Energy harvesting influences electrochemical performance of microbial fuel cells

JOURNAL OF POWER SOURCES

卷:356

Article

Lobo, Fernanda Leite¹  Wang, Xin²  Ren, Zhiyong Jason¹ 

[1] Univ Colorado, Dept Civil Environm & Architectural Engn, Boulder, CO 80309 USA

[2] Nankai Univ, Tianjin Engn Ctr Environm Diag & Contaminat Remed, MOE Key Lab Pollut Proc & Environm Criteria, Tianjin 300350, Peoples R China

关键词: Microbial fuel cell;    Maximum power point;    Maximum current point;    Energy harvesting;    Wastewater;   

DOI  :  10.1016/j.jpowsour.2017.03.067

来源: Elsevier

【 摘 要 】

Microbial fuel cells (MFCs) can be effective power sources for remote sensing, wastewater treatment and environmental remediation, but their performance needs significant improvement. This study systematically analyzes how active harvesting using electrical circuits increased MFC system outputs as compared to passive resistors not only in the traditional maximal power point (MPP) but also in other desired operating points such as the maximum current point (MCP) and the maximum voltage point (MVP). Results show that active harvesting in MPP increased power output by 81-375% and active harvesting in MCP increased Coulombic efficiency by 207-805% compared with resisters operated at the same points. The cyclic voltammograms revealed redox potential shifts and supported the performance data. The findings demonstrate that active harvesting is a very effective approach to improve MFC performance across different operating points. (C) 2017 Elsevier B.V. All rights reserved.

【 授权许可】

Free