Thermal and electrochemical impact of kaolin on a direct carbon fuel cell

Title: Thermal and electrochemical impact of kaolin on a direct carbon fuel cell
Creator: Moradmand, Simin; Allen, Jessica A.; Donne, Scott W.
Relation: Fuel Vol. 291, Issue 1 May 2021, no. 120215
Publisher Link: http://dx.doi.org/10.1016/j.fuel.2021.120215
Publisher: Elsevier
Resource Type: journal article
Date: 2021
Description: This paper investigates the impact of kaolin, a dominant coal mineral, on the thermal and electrochemical behaviour of the molten ternary carbonate eutectic ((Li,Na,K)2CO3) in the direct carbon fuel cell (DCFC) as a means to simulate long-term operation with a continuous coal feed. Thermogravimetric and differential thermal analysis, coupled with kinetic modelling using the Friedman method, shows a substantial decrease in activation energy for eutectic melting with the addition of kaolin. Electro-oxidation of carbon (graphite) is also enhanced with kaolin in the electrolyte, increasing from 17.68 mA/cm2 at 0 wt% kaolin to the highest value of 162 mA/cm2 with 15 wt% kaolin added. It is shown that the improvement is due to increasing oxide concentration resulting from kaolin dissolution in the electrolyte.
Subject: kaolin; direct carbon fuel cell; molten carbonate; graphite electrooxidation; SDG 7; Sustainable Development Goals
Identifier: http://hdl.handle.net/1959.13/1461817
Identifier: uon:46305
Identifier: ISSN:0016-2361
Language: eng
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