Theoretical study on the efficiency of nanofluidic batteries

A pressure-gradient-driven flow inside nanofluidic channels that have a surface charge can be used to generate streaming current and potential. This process forms the basis for electro-chemo-mechanical energy conversion in nanofluidic batteries. Here, the efficiency of such batteries was calculated...

Full description

Saved in:

Bibliographic Details
Published in:	Electrochemistry communications Vol. 8; no. 11; pp. 1796 - 1800
Main Authors:	Daiguji, Hirofumi, Oka, Yukiko, Adachi, Takuma, Shirono, Katsuhiro
Format:	Journal Article
Language:	English
Published:	Lausanne Elsevier B.V 01-11-2006 Amsterdam Elsevier Science New York, NY
Subjects:	Applied sciences Direct energy conversion and energy accumulation Efficiency Electrical double layer Electrical engineering. Electrical power engineering Electrical power engineering Electrochemical conversion: primary and secondary batteries, fuel cells Exact sciences and technology Nanofluidic battery Streaming current Nanofluidic battery Streaming current Efficiency Electrical double layer Electrochemical double layer Battery Theoretical study Secondary cell Microfluidics
Online Access:	Get full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Description
Summary:	A pressure-gradient-driven flow inside nanofluidic channels that have a surface charge can be used to generate streaming current and potential. This process forms the basis for electro-chemo-mechanical energy conversion in nanofluidic batteries. Here, the efficiency of such batteries was calculated using continuum dynamics. Results showed that (a) the bulk ion concentration to yield maximum efficiency depends on the channel height and surface charge density and (b) the efficiency can be expressed by two-dimensionless parameters when the flow is fully developed and the channel is a unipolar solution of counter ions.
ISSN:	1388-2481 1873-1902
DOI:	10.1016/j.elecom.2006.08.003