Synchronized High-Speed Microscopy and Thermoanalytical Measurement for Sub-mm/sub-ms-scale Cathodic Behavior in Molten Salt Electrolysis

Shungo Natsui, Ryota Shibuya, Hiroshi Nogami, Tatsuya Kikuchi, Ryosuke O. Suzuki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The electrochemically deposited liquid metal (Me = Ca, Li, or their alloys) in the molten chloride works as powerful reductant for TiO2 or other metal oxides; however, the electrolysis efficiency should be enough high if much lower oxygen level in metal phase was required. A detailed understanding of the cathodic behavior is necessary to control and optimize the electrolysis. In this study, to clarify the morphological and thermal characteristics of a cathodic electrode in a molten MeCl melt, we simultaneously performed electrochemical measurements and thermal measurements using an ultrafine thermocouple inserted inside a Mo electrode. Changes in the electrode interface were recorded at 500-μs intervals using a synchronized high-speed digital camera. It was possible to trace the change in the electrodeposition pattern in each potential quickly and sensitively, which was difficult to determine in only the electrochemical potential-current response.

Original languageEnglish
Title of host publicationTMS 2021 150th Annual Meeting and Exhibition Supplemental Proceedings
PublisherSpringer Science and Business Media Deutschland GmbH
Pages338-345
Number of pages8
ISBN (Print)9783030652609
DOIs
Publication statusPublished - 2021
Event150th Annual Meeting and Exhibition of The Minerals, Metals and Materials Society, TMS 2021 - Pittsburgh, United States
Duration: 2021 Mar 152021 Mar 18

Publication series

NameMinerals, Metals and Materials Series
Volume5
ISSN (Print)2367-1181
ISSN (Electronic)2367-1696

Conference

Conference150th Annual Meeting and Exhibition of The Minerals, Metals and Materials Society, TMS 2021
CountryUnited States
CityPittsburgh
Period21/3/1521/3/18

Keywords

  • Colloidal metal
  • Heat transfer
  • High-speed digital microscopy
  • Molten salt electrolysis

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy Engineering and Power Technology
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Synchronized High-Speed Microscopy and Thermoanalytical Measurement for Sub-mm/sub-ms-scale Cathodic Behavior in Molten Salt Electrolysis'. Together they form a unique fingerprint.

Cite this