能源化学(英文版)

能源化学(英文) ›› 2018, Vol. 27 ›› Issue (5): 1353-1361.DOI: 10.1016/j.jechem.2018.03.022

• Preface • 上一篇    下一篇

In situ compression and X-ray computed tomography of flow battery electrodes

Rhodri Jervisa, Matt D. R. Kokb, Tobias P. Nevillea, Quentin Meyera, Leon D. Browna, Francesco Iacovielloa, Jeff T. Gostickc, Dan J. L. Bretta, Paul R. Shearinga   

  1. a Electrochemical Innovation Lab, Department of Chemical Engineering, University College London, UK;
    b Department of Chemical Engineering, McGill University, Montreal, Canada;
    c Porous Media Engineering and Analysis Lab, Department of Chemical Engineering, University of Waterloo, Canada
  • 收稿日期:2017-12-31 修回日期:2018-03-05 出版日期:2018-09-15 发布日期:2018-09-15
  • 通讯作者: Rhodri Jervis,E-mail address:rhodri.jervis@ucl.ac.uk
  • 基金资助:

    The authors acknowledge 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, and Paul R Shearing acknowledges funding from the Royal Academy of Engineering.

In situ compression and X-ray computed tomography of flow battery electrodes

Rhodri Jervisa, Matt D. R. Kokb, Tobias P. Nevillea, Quentin Meyera, Leon D. Browna, Francesco Iacovielloa, Jeff T. Gostickc, Dan J. L. Bretta, Paul R. Shearinga   

  1. a Electrochemical Innovation Lab, Department of Chemical Engineering, University College London, UK;
    b Department of Chemical Engineering, McGill University, Montreal, Canada;
    c Porous Media Engineering and Analysis Lab, Department of Chemical Engineering, University of Waterloo, Canada
  • Received:2017-12-31 Revised:2018-03-05 Online:2018-09-15 Published:2018-09-15
  • Contact: Rhodri Jervis,E-mail address:rhodri.jervis@ucl.ac.uk
  • Supported by:

    The authors acknowledge 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, and Paul R Shearing acknowledges funding from the Royal Academy of Engineering.

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 underutilised 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 using 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%.

关键词: Redox flow battery, X-ray computed tomography, Compression, Carbon felt, RFB

Abstract: 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 underutilised 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 using 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%.

Key words: Redox flow battery, X-ray computed tomography, Compression, Carbon felt, RFB