Concurrent nanoscale surface etching and SnO₂ loading of carbon fibers for vanadium ion redox enhancement.

ABSTRACT: Facile and efficient methods to prepare active electrodes for redox reactions of electrolyte ions are required to produce efficient and low-cost redox flow batteries (RFBs). Carbon-fiber electrodes are widely used in various types of RFBs and surface oxidation is commonly performed to enhance the redox reactions, although it is not necessarily efficient. Quite recently, a technique for nanoscale and uniform surface etching of the carbon fiber surface was developed and a significant enhancement of the negative electrode reaction of vanadium redox flow batteries was attained, although the enhancement was limited to the positive electrode reaction. In this study, we attempted to obtain an additional enhancement effect of metal-oxide nanoparticles without the need for further processing steps.

SUBMITTER: Maruyama J 

PROVIDER: S-EPMC6541317 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature