中国科学院重庆绿色智能技术研究院机构知识库

QQ客服 官方微博 反馈留言

	Pulse-opencircuit voltammetry: A novel method characterizes bioanode performance from microbe-electrode interfacial processes
	Yin, Fengjun1,2; Lu, Shun1; Song, Cheng1; Zhao, Ying1; Dong, Haitai1; Wang, Zongping1; Liu, Hong1,2
	2022-12-01
摘要	Bioanode is a key component of bioelectrochemical systems, but the methods characterizing its resistance distribution are lacked. We propose a novel pulse-opencircuit voltammetry (POV) based on the analytical principle clarified from the electron flow pathways of microbe-electrode interfacial processes (MEIPs). A dual-cathode cell is designed to provide an experimental platform for ensuring precise data acquisition of bioanodes. This POV method enables to measure steady state polarization curves and ohmic potential loss curves by integrating potentiostatic discharge and current interruption techniques. They determines reaction resistance (R-B,R-act) and ohmic resistance (R-B,R-ohm) of biofilm with the assistance of impedance spectroscopy measuring material resistance. The results of various bioanodes demonstrate that R-B,R- act is the principal limiting factor and its value relies on catabolism state. Whilst R-B,R- ohm is relevant to extracellular electron transfer behaviors. They are two useful indicators of the dynamic evaluation of biofilm. We anticipate that this method together with the cell platform is accessible to users and has wide applications in bioanode construction and electroactive bacteria investigation.
关键词	Bioelectrochemistry Pulse-opencircuit voltammetry Microbe-electrode interfacial processes Resistance distribution Polarization curve
DOI	10.1016/j.bios.2022.114708
发表期刊	BIOSENSORS & BIOELECTRONICS
ISSN	0956-5663
卷号	217页码:7
通讯作者	Liu, Hong(liuhong@cigit.ac.cn)
收录类别	SCI
WOS记录号	WOS:000888826400002
语种	英语