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Wet‐Spun PEDOT/CNT Composite Hollow Fibers as Flexible Electrodes for H 2 O 2 Production **
Author(s) -
Cui Qing,
Bell Daniel Josef,
Wang Siqi,
Mohseni Mojtaba,
Felder Daniel,
Lölsberg Jonas,
Wessling Matthias
Publication year - 2021
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.202100237
Subject(s) - pedot:pss , materials science , hydrogen peroxide , composite number , catalysis , electrochemistry , fabrication , electrode , carbon nanotube , chemical engineering , fiber , composite material , polymer , chemistry , organic chemistry , medicine , alternative medicine , pathology , engineering
The electrochemical synthesis of hydrogen peroxide (H 2 O 2 ) using the oxygen reduction reaction (ORR) requires highly catalytic active, selective, and stable electrode materials to realize a green and efficient process. The present publication shows for the first time the application of a facile one‐step bottom‐up wet‐spinning approach for the continuous fabrication of stable and flexible tubular poly(3,4‐ethylene dioxythiophene) (PEDOT : PSS) and PEDOT : PSS/carbon nanotube (CNT) hollow fibers. Additionally, electrochemical experiments reveal the catalytic activity of acid‐treated PEDOT : PSS and its composites in the ORR forming hydrogen peroxide for the first time. Under optimized conditions, the composite electrodes with 40 wt % CNT loading could achieve a high production rate of 0.01 mg/min/cm 2 and a current efficiency of up to 54 %. In addition to the high production rate, the composite hollow fiber has proven its long‐term stability with 95 % current retention after 20 h of hydrogen peroxide production.