The role of electrolyte fluidity on the power generation characteristics of thermally driven electrochemical cells

Thermally driven electrochemical cells (thermocells) are able to convert thermal gradient applied across redox electrolyte into electricity. The performance of the thermocells heavily depends on the magnitude and integrity of the applied thermal gradient. Herein, we study the iodide/triiodide (I–/...

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Main Authors:	Syed Waqar Hasan, Suhana Mohd Said, Ahmad Shuhaimi Abu Bakar, Hasan Abbas Jaffery, Mohd. Faizul Mohd. Sabri
Format:	Article
Language:	English
Published:	Penerbit Universiti Kebangsaan Malaysia 2018
Online Access:	http://journalarticle.ukm.my/12020/ http://journalarticle.ukm.my/12020/ http://journalarticle.ukm.my/12020/1/UKM%20SAINSMalaysiana%2047%2802%29Feb%202018%2023.pdf

id	ukm-12020
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spelling	ukm-120202018-08-21T07:24:59Z http://journalarticle.ukm.my/12020/ The role of electrolyte fluidity on the power generation characteristics of thermally driven electrochemical cells Syed Waqar Hasan, Suhana Mohd Said, Ahmad Shuhaimi Abu Bakar, Hasan Abbas Jaffery, Mohd. Faizul Mohd. Sabri, Thermally driven electrochemical cells (thermocells) are able to convert thermal gradient applied across redox electrolyte into electricity. The performance of the thermocells heavily depends on the magnitude and integrity of the applied thermal gradient. Herein, we study the iodide/triiodide (I–/I3 –) based 1-Ethyl-3-methyl-imidazolium Ethylsulfate ([EMIM][EtSO4]) solutions in a thermocell. In order to comprehend the role of fluidity of the electrolyte, we prepared set of solutions by diluting [EMIM][EtSO4] with 0.002, 0.004, and 0.010 mol of Acetonitrile (ACN). We realized a significant improvement in ionic conductivity (σ) and electrochemical Seebeck (Se) of diluted electrolytes as compared to base [EMIM][EtSO4] owing to the solvent organization. However, the infra-red thermography indicated faster heat flow in ACN-diluted-[EMIM] [EtSO4] as compared to the base [EMIM][EtSO4]. Therefore, the maximum power density of base [EMIM][EtSO4] (i.e. 118.5 μW.m-2) is 3 times higher than the ACN-diluted-[EMIM][EtSO4] (i.e. 36.1 μW.m-2) because of the lower thermal conductivity. Hence this paper illustrates the compromise between the fast mass/flow transfer due to fluidity (of diluted samples) and the low thermal conductivity (of the pure [EMIM][EtSO4]). Penerbit Universiti Kebangsaan Malaysia 2018-02 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/12020/1/UKM%20SAINSMalaysiana%2047%2802%29Feb%202018%2023.pdf Syed Waqar Hasan, and Suhana Mohd Said, and Ahmad Shuhaimi Abu Bakar, and Hasan Abbas Jaffery, and Mohd. Faizul Mohd. Sabri, (2018) The role of electrolyte fluidity on the power generation characteristics of thermally driven electrochemical cells. Sains Malaysiana, 47 (2). pp. 403-408. ISSN 0126-6039 http://www.ukm.my/jsm/english_journals/vol47num2_2018/contentsVol47num2_2018.html
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
description	Thermally driven electrochemical cells (thermocells) are able to convert thermal gradient applied across redox electrolyte into electricity. The performance of the thermocells heavily depends on the magnitude and integrity of the applied thermal gradient. Herein, we study the iodide/triiodide (I–/I3 –) based 1-Ethyl-3-methyl-imidazolium Ethylsulfate ([EMIM][EtSO4]) solutions in a thermocell. In order to comprehend the role of fluidity of the electrolyte, we prepared set of solutions by diluting [EMIM][EtSO4] with 0.002, 0.004, and 0.010 mol of Acetonitrile (ACN). We realized a significant improvement in ionic conductivity (σ) and electrochemical Seebeck (Se) of diluted electrolytes as compared to base [EMIM][EtSO4] owing to the solvent organization. However, the infra-red thermography indicated faster heat flow in ACN-diluted-[EMIM] [EtSO4] as compared to the base [EMIM][EtSO4]. Therefore, the maximum power density of base [EMIM][EtSO4] (i.e. 118.5 μW.m-2) is 3 times higher than the ACN-diluted-[EMIM][EtSO4] (i.e. 36.1 μW.m-2) because of the lower thermal conductivity. Hence this paper illustrates the compromise between the fast mass/flow transfer due to fluidity (of diluted samples) and the low thermal conductivity (of the pure [EMIM][EtSO4]).
format	Article
author	Syed Waqar Hasan, Suhana Mohd Said, Ahmad Shuhaimi Abu Bakar, Hasan Abbas Jaffery, Mohd. Faizul Mohd. Sabri,
spellingShingle	Syed Waqar Hasan, Suhana Mohd Said, Ahmad Shuhaimi Abu Bakar, Hasan Abbas Jaffery, Mohd. Faizul Mohd. Sabri, The role of electrolyte fluidity on the power generation characteristics of thermally driven electrochemical cells
author_facet	Syed Waqar Hasan, Suhana Mohd Said, Ahmad Shuhaimi Abu Bakar, Hasan Abbas Jaffery, Mohd. Faizul Mohd. Sabri,
author_sort	Syed Waqar Hasan,
title	The role of electrolyte fluidity on the power generation characteristics of thermally driven electrochemical cells
title_short	The role of electrolyte fluidity on the power generation characteristics of thermally driven electrochemical cells
title_full	The role of electrolyte fluidity on the power generation characteristics of thermally driven electrochemical cells
title_fullStr	The role of electrolyte fluidity on the power generation characteristics of thermally driven electrochemical cells
title_full_unstemmed	The role of electrolyte fluidity on the power generation characteristics of thermally driven electrochemical cells
title_sort	role of electrolyte fluidity on the power generation characteristics of thermally driven electrochemical cells
publisher	Penerbit Universiti Kebangsaan Malaysia
publishDate	2018
url	http://journalarticle.ukm.my/12020/ http://journalarticle.ukm.my/12020/ http://journalarticle.ukm.my/12020/1/UKM%20SAINSMalaysiana%2047%2802%29Feb%202018%2023.pdf
first_indexed	2023-09-18T20:01:40Z
last_indexed	2023-09-18T20:01:40Z
_version_	1777406890109566976

The role of electrolyte fluidity on the power generation characteristics of thermally driven electrochemical cells

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