Article
  • N-type Photoanodes for Photoelectrochemical Water Splitting Using a Newly Synthesized Conjugated Polymer as an Additive
  • Mingi Sung, Taehong Kim, Hyo-Jin Ahn*,† , and Junghoon Lee

  • Division of Chemical Engineering, Dongseo University, Busan 47011, Korea
    *LSTME Busan, Busan 46742, Korea

  • 전도성 고분자를 첨가제로 사용한 광전기화학 물 분해용 n-type 광양극
  • 성민기 · 김태홍 · 안효진*,† · 이정훈

  • 동서대학교 화학공학부, *LSTME Busan

  • Reproduction, stored in a retrieval system, or transmitted in any form of any part of this publication is permitted only by written permission from the Polymer Society of Korea.

Abstract

Replacing inorganic semiconductors with organic semiconductors for photoelectrochemical water-splitting (PEC-WS) has been challenging. In this study, a photoanode was fabricated by both n-type organic semiconductor, poly{[N,N'-bis(2-octyldodecyl)naphthalene-1,4,5,8-bis(dicarboximide)-2,6-diyl]-alt-5,5'-(2,2'-bithiophene)} (N2200) and a newly synthesized conjugated polymer, poly(4-(4,4-dihexadecyl-4H-cyclopenta[1,2-b:5,4-b']dithiophen-2-yl)-7-(4,4-dihexadecyl-6-(thiophen-2-yl)-4H-cyclopenta[1,2-b:5,4-b']dithiophen-2-yl)-5-fluorobenzo[c][1,2,5]thiadiazole) (PCFCS) as an additive and it has enhanced photocurrent density. Linear sweep voltammetry revealed that the addition of PCFCS (5.0 μg) increased the photocurrent density up to 62.5% (1.12 to 1.82 μA/cm2).


광전기화학 물 분해 시스템에서 사용하는 무기물질을 전도성 고분자로 직접 대체하여 유기광양극을 제조한 연구는 많이 진행되지 않았다. 따라서 본 연구는 광전류밀도를 증가시키기 위하여 n-type 유기반도체인 N2200과 신규 합성한 전도성 고분자인 PCFCS를 첨가제로 사용한 광양극을 제작하였다. 선형주사전위법으로 광전류밀도를 측정한 결과 PCFCS 첨가제를 포함하지 않은 광양극의 광전류밀도는 1.12 μA/cm2였다. 5.0 μg의 PCFCS를 N2200에 첨가제로 사용하였을 때 광전류밀도는 1.82 μA/cm2로 62.5% 증가한 값을 확인하였다.


Keywords: photoelectrochemical water splitting, conjugated polymer, additive, organic semiconductor, organic photoanode.

  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2022 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 2022; 46(3): 409-417

    Published online May 25, 2022

  • 10.7317/pk.2022.46.3.409
  • Received on Feb 21, 2022
  • Revised on Mar 15, 2022
  • Accepted on Mar 15, 2022

Correspondence to

  • yo-Jin Ahn* , and Junghoon Lee
  • Division of Chemical Engineering, Dongseo University, Busan 47011, Korea

  • E-mail: hyo-jin.ahn@lstme.org, junghoonlee@gdsu.dongseo.ac.kr