Self-discharge mitigation in a liquid metal displacement battery

• Tipo: Artigo em Revista Científica Internacional
• Data: 2022-03-01

Autores

Kashif Mushtaq (Autor) Outra; Ji Zhao (Autor) Outra; Norbert Weber (Autor) Outra; Adélio Mendes (Autor) FEUP; Donald Sadoway (Autor) Outra

Revista

Título: Journal of Energy Chemistry

Vol. 66

Páginas: 390-396

ISSN: 2095-4956

Editora: Elsevier

Indexação

ISI Web of Knowledge - 0 Citações

Scopus - 0 Citações

Classificação Científica

CORDIS: Ciências Físicas > Química

FOS: Ciências da engenharia e tecnologias > Engenharia química

Outras Informações

ID Authenticus: 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.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 7