A flexible multifunctional electrode based on conducting PANI/Pd composite for non-enzymatic glucose sensor and direct alcohol fuel cell applications
Journal article, 2023

In this work, we fabricated a flexible, multifunctional polyimide (PI)/Au-polyaniline (PAN)/Pd nanocomposite electrode with excellent electrochemical properties. Structural geometry, morphological views, and functional group analyses indicated that the physicochemical and electrochemical performance of the electrode is based on the strong and synergistic metal-polymer interaction between the conducting PAN and Pd, which ensured high conductivity, rapid response, and high electron transfer rate through more electroactive spots available in the nanocomposite. Here, we demonstrated that the fabricated PI/Au-PAN/Pd electrodes can be successfully used for biomedical sensing of glucose, as well as for energy conversion application, using the oxidation of alcohols such as methanol and ethanol in fuel cells. The electrochemical analysis shows that the flexible sensor (PI/Au-PAN/Pd) has ultra-high sensitivity of 2140 μA/μM.cm2 with a low detection limit of 0.3 μM for glucose. Also, the interference analysis, reproducibility, and stability studies reveal its excellent capability for glucose sensing. Furthermore, the electrode also demonstrates prominent electrocatalytic behavior to the electrooxidation of methanol and ethanol in an alkaline medium with a current density of 3 mA/cm2 and 0.96 mA/cm2 along with good cyclic stability. Thus, this efficient flexible electrocatalyst with good stability, practicability, and reproducibility claims its potential applications in flexible/wearable healthcare diagnostics systems as well as in alternative energy conversion devices.

Flexible electrode

Direct alcohol fuel cells

Polyaniline

Glucose sensor

Palladium

Author

Muthusankar Eswaran

Chalmers, Life Sciences, Systems and Synthetic Biology

Shadi Rahimi

Chalmers, Life Sciences, Systems and Synthetic Biology

Santosh Pandit

Chalmers, Life Sciences, Systems and Synthetic Biology

Bavatharani Chokkiah

Karpagam Academy of Higher Education

Ivan Mijakovic

Chalmers, Life Sciences, Systems and Synthetic Biology

Technical University of Denmark (DTU)

Fuel

0016-2361 (ISSN)

Vol. 345 128182

CRISPR-based mutation detection using graphene chip enables cancer detection

VINNOVA (2020-04733), 2021-05-14 -- 2023-05-14.

Understanding the interaction of graphene-based coating on dental implants and peri-implantitis bacteria

Swedish Research Council (VR) (2020-04096), 2021-01-01 -- 2024-12-31.

Subject Categories

Analytical Chemistry

Materials Chemistry

Other Chemistry Topics

Areas of Advance

Materials Science

DOI

10.1016/j.fuel.2023.128182

More information

Latest update

4/12/2023