Jong-Eun Park

Electrochemical detection of ascorbic acid and serotonin at a boron-doped diamond electrode modified with poly(N,N-dimethylaniline)

The electrochemical oxidation of ascorbic acid (AA) and serotonin (5-HT) at a boron-doped diamond (BDD) electrode modified with poly(N,N-dimethylaniline) (PDMA) has been studied. The oxidation potentials of 5-HT and AA overlapped after mixing of the two chemicals, due to interference of AA at the bare BDD electrode. However, after modifying the BDD electrode with a cationic polymer (PDMA), the oxidation peaks of 5-HT and AA were separated. PDMA-coated BDD electrodes can be used for simultaneous detection of these species.

Nanotechnologies for Fuel Cells

Fuel cells, which convert chemical energy directly into electrical energy with high efficiency and low emission, are currently attracting interest because of their huge potential for power generation in stationary and portable devices, transport applications, and sustainable energy production. Direct methanol fuel cells (DMFCs) are especially attractive as portable power sources because of characteristics such as simple construction, easy operation, liquid fuel, and high efficiency [1, 2].

The electrochemical study of dimercaptan-polyphenylene diamine composite cathode for polymer film battery

In this paper, the general composite cathode for use in positive active materials was prepared from solutions of 2,5-dimercapto-1,3,4-thiadiazole (DMcT) and polyphenylenediamine (PPD), organic materials, which have been synthesized already in this laboratory. We discuss the electrochemical characteristics of composite cathode by using cyclic voltammetry. The mechanical properties are also discussed by using TGA and UTM instruments. We are also working on the electrical conductivity by using a four-probe method in dry box system.