气候变化领域集成服务门户(CCPortal): Chloride transport in conductive polymer films for an n-type thermoelectric platform

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DOI	10.1039/c9ee02399b
	Chloride transport in conductive polymer films for an n-type thermoelectric platform
	Kim B.; Hwang J.U.; Kim E.
发表日期	2020
ISSN	17545692
起始页码	859
结束页码	867
卷号	13 期号:3
英文摘要	Cl- transport in a conductive polymer (CP) film was demonstrated for n-type thermoelectric (TE) harvesting. CPs have been considered as an important group of p-type TE materials due to their high TE functionalities plus simple processing steps for a device. In particular, recently emerging p-type ionic CPs can be unique candidates due to their high Seebeck coefficients (S). However, n-type materials based on CPs suffer from very poor TE functionalities, and n-type ionic TE CP materials have not been realized so far. Here, we report the first example of n-type mixed ionic-electronic CP composite (NPC) films. The p-type TE properties of the PEDOT:PSS films was drastically converted into the n-type TE properties in the presence of CuCl2 through metal binding with polymers, thus resulting in the formation of Cl- channels. Fluorescence imaging using Cl- as an indicator and time-of-flight secondary ion mass spectrometry mapping confirmed that Cl- is transported in the film from the hot to the cold electrode. In addition, electron spin resonance spectroscopy indicated the major spin density transition from a polaron of PEDOT:PSS to the polymer-bound unpaired electron spin of Cu ions by increasing the CuCl2 content to prove the binding of metal ions with the PSS unit of the polymer chain. These mixed ionic-electronic NPC films recorded a surprisingly high negative S value of over-18.2 mV K-1 and a power factor of 1.7 mW m-1 K-2 at 80% RH with 40 wt% of CuCl2. Taking advantage of this high performance, the CP films were integrated with a p-type CP film as a flexible module-type TE harvester with 10 pairs of p-n legs on CNT electrodes. This TE harvester showed a thermovoltage of 1.55 V for a low temperature gradient of 4.5 K. This high anion transport in a TE CP hydrogel film might be a useful solution for environmentally benign and body-worn electronics. © 2020 The Royal Society of Chemistry.
英文关键词	Chlorine compounds; Composite films; Conducting polymers; Copper compounds; Electrodes; Electron spin resonance spectroscopy; Electrospinning; Fluorescence imaging; Heavy ions; Magnetic moments; Metal ions; Metals; Negative ions; Plants (botany); Secondary ion mass spectrometry; Spin dynamics; Temperature; Conductive Polymer; Conductive polymer films; Environmentally benign; Low temperature gradients; N-type materials; Processing steps; Time of flight secondary ion mass spectrometry; Unpaired electrons; Polymer films; chloride; equipment; film; pollutant transport; polymer
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/189690
作者单位	Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea
推荐引用方式 GB/T 7714	Kim B.,Hwang J.U.,Kim E.. Chloride transport in conductive polymer films for an n-type thermoelectric platform[J],2020,13(3).
APA	Kim B.,Hwang J.U.,&Kim E..(2020).Chloride transport in conductive polymer films for an n-type thermoelectric platform.Energy & Environmental Science,13(3).
MLA	Kim B.,et al."Chloride transport in conductive polymer films for an n-type thermoelectric platform".Energy & Environmental Science 13.3(2020).