Self-discharge mitigation in a liquid metal displacement battery

• Type: Article in International Scientific Journal
• Date: 2022-03-01

Authors

Kashif Mushtaq (Author) Other; Ji Zhao (Author) Other; Norbert Weber (Author) Other; Adélio Mendes (Author) FEUP; Donald Sadoway (Author) Other

Journal

Title: Journal of Energy Chemistry

Vol. 66

Pages: 390-396

ISSN: 2095-4956

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 0 Citations

Scopus - 0 Citations

Scientific classification

CORDIS: Physical sciences > Chemistry

FOS: Engineering and technology > Chemical engineering

Other information

Authenticus ID: P-00V-B96

DOI: 10.1016/j.jechem.2021.08.015

Abstract (EN): Recently, a disruptive idea was reported about the discovery of a new type of battery named Liquid Displacement Battery (LDB) comprising liquid metal electrodes and molten salt electrolyte. This cell featured a novel concept of a porous electronically conductive faradaic membrane instead of the traditional ion-selective ceramic membrane. LDBs are attractive for stationary storage applications but need mitigation against self-discharge. In the instant battery chemistry, Li vertical bar LiCl-PbCl2 vertical bar Pb, reducing the diffusion coefficient of lead ions can be a way forward and a solution can be the addition of PbO to the electrolyte. The latter acts as a supplementary barrier and complements the function of the faradaic membrane. The remedial actions improved the cell's coulombic efficiency from 92% to 97% without affecting the voltage efficiency. In addition, the limiting current density of a 500 mAh cell increased from 575 to 831 mA cm(-2) and the limiting power from 2.53 to 3.66 W. Finally, the effect of PbO on the impedance and polarization of the cell was also studied.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7