In situ compression and X-ray computed tomography of flow battery electrodes
In situ compression and X-ray computed tomography of flow battery electrodes作者机构:Electrochemical Innovation Lab Department of Chemical Engineering University College London Department of Chemical Engineering McGill University Porous Media Engineering and Analysis Lab Department of Chemical Engineering University of Waterloo
出 版 物:《Journal of Energy Chemistry》 (能源化学(英文版))
年 卷 期:2018年第27卷第5期
页 面:1353-1361页
核心收录:
学科分类:0820[工学-石油与天然气工程] 0808[工学-电气工程] 0817[工学-化学工程与技术] 08[工学] 0807[工学-动力工程及工程热物理] 0827[工学-核科学与技术] 0703[理学-化学]
基 金:support from the EPSRC under grants EP/L014289/1 EP/N032888/1 and EP/M014045/1 the STFC Global Challenges Network in Batteries and Electrochemical Energy Devices under the grant ST/N002385/1 for facilitation of travel funding from the Royal Academy of Engineering
主 题:Redox flow battery X-ray computed tomography Compression Carbon felt RFB
摘 要:Redox flow batteries offer a potential solution to an increase in renewable energy generation on the grid by offering long-term, large-scale storage and regulation of power. However, they are currently un- derutilised due to cost and performance issues, many of which are linked to the microstructure of the porous carbon electrodes used. Here, for the first time, we offer a detailed study of the in situ effects of compression on a commercially available carbon felt electrode. Visualisation of electrode structure us- ing X-ray computed tomography shows the non-linear way that these materials compress and various metrics are used to elucidate the changes in porosity, pore size distribution and tortuosity factor under compressions from 0%-90%.