Electrolysis‐reducing electrodes for electrokinetic devices

  title={Electrolysis‐reducing electrodes for electrokinetic devices},
  author={Per G. Erlandsson and Nathaniel D. Robinson},
Direct current electrokinetic systems generally require Faradaic reactions to occur at a pair of electrodes to maintain an electric field in an electrolyte connecting them. The vast majority of such systems, e.g. electrophoretic separations (capillary electrophoresis) or electroosmotic pumps (EOPs), employ electrolysis of the solvent in these reactions. In many cases, the electrolytic products, such as H+ and OH− in the case of water, can negatively influence the chemical or biological species… 
Bubble‐free electrokinetic flow with propylene carbonate
This article presents an alternative polar liquid for DC electrokinetic pumping, propylene carbonate (PC), which remains free of bubbles up to at least 10 kV/cm, and could be substituted by water in existing electroosmotic pumps.
Electroosmotic Flow in Cell Built with Electrodes Having Two Redox Couples
In an electroosmotic flow cell with two electrooxidizable and electroreducible reactants in its electrodes, the net cell reaction underlying the flow-driving proton flux from the anode to the cathode
High-Capacity Redox Polymer Electrodes: Applications in Molecular and Cellular Processing
Techniques to fabricate high-capacity redox electrodes using thick membrane or fiber casting of conjugated polymer solutions enable production of PEDOT:PSS electrodes with high charge capacity and the capability to operate under applied voltages greater than 100 V without electrochemical overoxidation.
Conducting Polymer Electrodes for Gel Electrophoresis
It is shown that electrodes containing PEDOT can be used with a commercial polyacrylamide gel electrophoresis system with minimal impact to the resulting gel image or the ionic transport measured during a separation.
A large-area, all-plastic, flexible electroosmotic pump
A large-area, fabric-like pump would potentially have applications, for example, in controlling water transport through a garment, such as a rain jacket, regardless of the external temperature and
Improving electrokinetic microdevice stability by controlling electrolysis bubbles
Electrolysis bubble behaviors were found to be influenced by surfactant function and SnakeSkin® barriers, and physically blocking bubbles from microchannels is less effective than electrode functionalization approaches to stabilize electrokinetic microfluidic systems.
Electrolysis phenomena in electrophoresis
A new theoretical approach for calculating changes in the physico‐chemical properties of BGEs for measurements by CZE due to the electrolysis in electrode vials (vessels) predicted to be several times lower than that of a common BGE composed of a weak acid – strong base pair.
A Simple Non‐Gassing, Direct Current, Electro‐Osmotic Pump: Carbon Paper/Ceramic Frit/Carbon Paper
We report the simplest of the small, non-gassing, low-voltage, direct-current, electro-osmotic pumps, providing enough flow for the delivery of drugs. It consists merely of a ceramic frit sandwiched
Microfabricated All-Around-Electrode AC Electro-osmotic Micropump
This thesis presents the fabrication and characterisation of AC electro-osmotic micropumps with a simple design and velocity generation enhanced by about four times with respect to devices with
Nongassing long-lasting electro-osmotic pump with polyaniline-wrapped aminated graphene electrodes.
An efficient nongassing electro-osmotic pump (EOP) with long-lasting electrodes and exceptionally stable operation is developed by using novel flow-through polyaniline (PANI)-wrapped aminated


Basic principles of electrolyte chemistry for microfluidic electrokinetics. Part II: Coupling between ion mobility, electrolysis, and acid-base equilibria.
The coupling between acid-base equilibrium chemistry and electrophoretic mobilities of electrolytes, at both infinite and finite dilution, is summarized and the effects of electrode reactions on microfluidic electrokinetic experiments are discussed.
A planar electroosmotic micropump
Electroosmotic (EO) micropumps use field-induced ion drag to drive liquids and achieve high pressures in a compact design with no moving parts. An analytical model applicable to planar,
Spatially controlled microfluidics using low-voltage electrokinetics
Most electrokinetic microfluidic devices currently require high voltages (>50 V) to generate sustained electric fields. However, two long-standing limitations remain, namely: (i) the resulting
Long-term stable electroosmotic pump with ion exchange membranes.
We present the design, fabrication and test of a novel inline frit-based electroosmotic (EO) pump with ion exchange membranes. The pump is more stable than previous types due to a new flow component
Electrokinetic transport of red blood cells in microcapillaries
A short‐term solution to the pH gradient formation is presented that could help thwart development of pH gradients in micro‐devices at lower voltages.
Chemical and morphological changes on platinum microelectrode surfaces in AC and DC fields with biological buffer solutions.
Platinum dissolution, platinum redeposition, chloride formation and oxide formation on platinum microelectrode surfaces were observed by scanning electron microscopy and energy dispersive spectroscopy and verified by cyclic voltammetry studies.
Potential Stability of All-Solid-State Ion-Selective Electrodes Using Conducting Polymers as Ion-to-Electron Transducers.
  • J. Bobacka
  • Materials Science
    Analytical chemistry
  • 1999
Chronopotentiometry is found to be a convenient and fast experimental method to critically evaluate the potential stability of different types of ion-selective electrodes.
Manufacturing and application of a fully polymeric electrophoresis chip with integrated polyaniline electrodes.
Highly efficient separations comparable to those achieved in similar microchips using platinum electrodes confirm the potential of polyaniline as a new material suitable for high voltage electrodes in Lab-on-a-chip devices.