CLC number:
On-line Access: 2024-06-26
Received: 2023-09-23
Revision Accepted: 2024-05-26
Crosschecked: 0000-00-00
Cited: 0
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Linze Li, Changqing Jiang & Luming Li . Hierarchical structures on platinumiridium substrates enhancing conducting polymer adhesion[J]. Journal of Zhejiang University Science D, 2024, 7(6): 889-898.
@article{title="Hierarchical structures on platinumiridium substrates enhancing conducting polymer adhesion",
author="Linze Li, Changqing Jiang & Luming Li ",
journal="Journal of Zhejiang University Science D",
volume="7",
number="6",
pages="889-898",
year="2024",
publisher="Zhejiang University Press & Springer",
doi="10.1007/s42242-024-00296-0"
}
%0 Journal Article
%T Hierarchical structures on platinumiridium substrates enhancing conducting polymer adhesion
%A Linze Li
%A Changqing Jiang & Luming Li
%J Journal of Zhejiang University SCIENCE D
%V 7
%N 6
%P 889-898
%@ 1869-1951
%D 2024
%I Zhejiang University Press & Springer
%DOI 10.1007/s42242-024-00296-0
TY - JOUR
T1 - Hierarchical structures on platinumiridium substrates enhancing conducting polymer adhesion
A1 - Linze Li
A1 - Changqing Jiang & Luming Li
J0 - Journal of Zhejiang University Science D
VL - 7
IS - 6
SP - 889
EP - 898
%@ 1869-1951
Y1 - 2024
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1007/s42242-024-00296-0
Abstract: Conducting polymers (CPs), including poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), are promising coating materials for neural electrodes. However, the weak adhesion of CP coatings to substrates such as platinumiridium
is a significant challenge that limits their practical application. To address this issue, we used femtosecond laser-prepared
hierarchical structures on platinumiridium (PtIr) substrates to enhance the adhesion of PEDOT:PSS coatings. Next, we
used cyclic voltammetry (CV) stress and accelerated aging tests to evaluate the stability of both drop cast and electrodeposited
PEDOT:PSS coatings on PtIr substrates, both with and without hierarchical structures. Our results showed that after 2000 CV
cycles or five weeks of aging at 60 C, the morphology and electrochemical properties of the coatings on the PtIr substrates
with hierarchical structures remained relatively stable. In contrast, we found that smooth PtIr substrate surfaces caused
delamination of the PEDOT:PSS coating and exhibited both decreased charge storage capacity and increased impedance.
Overall, enhancing the stability of PEDOT:PSS coatings used on common platinumiridium neural electrodes offers great
potential for improving their electrochemical performance and developing new functionalities.
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