Enhanced Electrophoresis Based On Redox Electrochemistry Of Electroactive Electrode Materials And Fabrication Of A Self-powered Electrophoresis System Based On Discharging A Battery.

Open Access
Author:
Zhang, Can
Graduate Program:
Chemistry
Degree:
Master of Science
Document Type:
Master Thesis
Date of Defense:
March 28, 2013
Committee Members:
  • Ayusman Sen, Thesis Advisor
Keywords:
  • Supercapacitor
  • Electrophoresis.
Abstract:
Electrophoresis refers to the migration of suspended particles relative to a fluid under the influence of an electrical field. In this paper, enhanced electrophoresis is achieved at low electrical field. The electrophoretic motions are improved by taking advantage of redox reactions of electroactive supercapacitor electrodes. The electrochemical studies reveal that the MnO2 electrode can effectively prevent the electrode surface from polarization in the low ionic environment, the main factor that counts for the inefficient electrophoresis under the low voltage. For the higher ionic environment, varying the capacitance of the electrode by increasing the electrode thickness or using different electrolyte with bulkier ions could further boost the electrophoresis performances. Besides, based on the tracer particle movement enabled by the supercapacitor electrodes, we have successfully designed and fabricated a self-powered electrophoresis system based on discharging a battery. The current study provides an insight of designing new microelectrophoresis device based on rechargeable battery system.